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Identity Federation
ASecurityUse for authorized assessment of federated identity systems including SAML, OIDC, OAuth2 flows, SSO misconfiguration, and token confusion issues.
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- Added September 23, 2026
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[](https://www.skillsdirectory.com/skills/coco-research-identity-federation)---
name: identity-federation
description: Use for authorized assessment of federated identity systems including SAML, OIDC, OAuth2 flows, SSO misconfiguration, and token confusion issues.
user-invocable: true
---
# Identity Federation (SAML / OIDC / OAuth)
## 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)
Files in this skill
- SKILL.md
- references/sso-flow-checklist.md
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