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Identity Federation

ASecurity

Use for authorized assessment of federated identity systems including SAML, OIDC, OAuth2 flows, SSO misconfiguration, and token confusion issues.

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  • Added September 27, 2026
developmentgoapisecurity

Works with

  • api

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A100/100

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Scanned September 27, 2026

npx -y skills add Saprophytic-seattle561/reverse-skill --skill identity-federation --agent claude-code

Installs into .claude/skills of the current project.

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SKILL.md
---
name: identity-federation
description: Use for authorized assessment of federated identity systems including SAML, OIDC, OAuth2 flows, SSO misconfiguration, and token confusion issues.
---

# Identity Federation (SAML / OIDC / OAuth)

## ACTION REQUIRED(读完后立刻执行)

1. `NOW`: 读取 precedent-pentest;SSO 测试账号与 IdP/SP 范围入 scope
2. `NOW`: 禁止锁定真实用户账户的暴力尝试
3. `NEXT`: 抓包工具与文档(元数据 URL)
4. `ACT`: 协议流映射 → 常见错配 → 验证

## 适用场景

- SAML Response 签名/断言篡改面(经典缺陷模式)
- OIDC 隐式/授权码 + PKCE 缺失
- redirect_uri / state / nonce 问题
- IdP 与 SP 元数据、多租户 issuer 混淆
- 与 `api-security` JWT 攻击互补(本 skill 偏联邦与 SSO 流)

## 工作流

```text
□ 画清:User → SP → IdP → Token → SP
□ 收集:/.well-known/openid-configuration、SAML metadata
□ 检查:redirect_uri 精确匹配、state 绑定、PKCE
□ 检查:SAML 签名覆盖范围、algorithm 降级
□ 会话固定与登出失效
```

## 工具链

| 工具 | 用途 |
|------|------|
| Burp + SAML Raider 等 | 断言编辑(授权) |
| jwt_tool | JWT 段 |
| 浏览器 DevTools | 重定向链 |
| IdP 管理日志 | 审计 |

## 参考

- `references/sso-flow-checklist.md`
- `../api-security/` `../windows-ad/`(企业 IdP)

## 路由上下文

**上游**: MASTER R37  
**下游**: 纯 API JWT → api-security;云 IdP → cloud-k8s

## 任务完成自检

- [ ] 是否映射完整 SSO 流?
- [ ] 每个 Finding 是否有复现与影响?
- [ ] Checklist?

Files in this skill

  • SKILL.md1.6 KB
  • references/sso-flow-checklist.md238 B

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