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SKILL verified MIT Self-run

Injection Vulns

skill-zhaji2333-ckskills-injection-vulns · by zhaji2333

当发现参数拼接SQL、动态排序/筛选、JSON查询条件可控、模板渲染、命令执行点、搜索/统计/自动补全接口时调用,进行SQL/NoSQL/命令/SSTI/表达式注入的深度挖掘。命中场景:搜索框、排序参数、登录绕过、导出条件、文件名参数、模板/报表生成、爬虫URL参数。

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Install

$ agentstack add skill-zhaji2333-ckskills-injection-vulns

✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.

Security review

✓ Passed

No issues found. Passed automated security review. · v0.1.0 How review works →

  • Prompt-injection patterns
  • Secret / credential exfiltration
  • Dangerous shell & filesystem operations
  • Untrusted network calls
  • Known-malicious package signatures

What it can access

  • Network access Used
  • Filesystem access No
  • Shell / process execution Used
  • Environment & secrets No
  • Dynamic code execution No

From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.

View the full security report →

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Reliability & compatibility

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Declared compatibility

Claude CodeClaude Desktop

Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.

Preview Execution monitoring

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About

injection-vulns — 注入类漏洞专项深度挖掘

何时调用(触发条件)

  • 参数直接拼接到 SQL / NoSQL 查询(搜索、筛选、排序、分页、导出条件)
  • JSON 查询条件可控({"$gt":0} 等 MongoDB 风格)
  • 用户输入进入 shell 命令(exec/system/ProcessBuilder、ping/curl/文件名拼接)
  • 用户输入进入模板引擎(Jinja2/Velocity/Freemarker/Thymeleaf)
  • 用户输入进入表达式解释器(SpEL/OGNL/EL/MVEL)
  • 危险函数出现在代码审计结果中(见 source-code-audit

一、漏洞类型全景

| 类型 | 危险函数/场景 | 挖掘要点 | |---|---|---| | C1. SQL注入 | 拼接SQL、动态排序 | 响应差异验证(错误/延迟/条数) | | C2. NoSQL注入 | JSON查询条件可控 | 类型替换、全量查询 | | C3. 命令注入 | exec/system/ProcessBuilder | shell拼接、管道符 | | C4. 模板注入(SSTI) | Jinja2/Velocity/Freemarker | 用户输入进入模板渲染 | | C5. 表达式注入 | SpEL/OGNL/EL | 可控片段进入解释器 |

二、常见场景清单(搜索/查询类)

| 场景 | 漏洞类型 | 挖掘要点 | |---|---|---| | 站内搜索 | SQL注入/XSS/信息泄露 | 搜索词拼接、搜索结果反射 | | 高级筛选/排序 | SQL注入/NoSQL注入 | order by注入、筛选条件可控 | | 自动补全/联想 | 信息泄露/用户枚举 | 补全接口泄露敏感数据 | | 数据统计/图表 | SQL注入/越权 | 统计维度可控、跨权限聚合 | | ES/Solr搜索 | 查询注入/未授权 | DSL注入、搜索接口暴露 |

三、接口 Fuzz 技巧(参数污染与类型混淆)

参数污染:
  ?id=1&id=2  → 看哪个生效
  ?id[]=1&id[]=2 → 数组化
  ?id=1,2,3 → 批量查询

类型混淆:
  id=1 → id="1" → id={"$gt":0} → id[]=1

编码绕过:
  Unicode: \u002e\u002e/ (../)
  双重URL编码: %252e%252e%252f

隐藏参数:
  debug=1 / test=1 / admin=1
  _method=PUT / X-HTTP-Method-Override

批量操作:
  ids=1,2,3,4,5 一次查多个
  page=-1 / limit=99999 绕过分页

四、SQL 注入绕过技术

大小写:SeLeCt / 双写:selselectect
注释:/**/、/*!*/、--+、#
编码:URL编码、十六进制、Unicode
等价函数:substr→mid、ascii→ord

五、命令注入绕过技术

分隔符:| / || / & / && / ; / %0a
空格:${IFS} / $IFS$9 / %09 / {cat,/etc/passwd}
通配符:/???/??t /etc/passwd

六、验证要点

  • 响应差异对比:基线请求 vs 注入请求的状态码/响应大小/错误信息/响应时间
  • 时间盲注SLEEP(5) / pg_sleep(5) / WAITFOR DELAY '0:0:5' 验证
  • 报错注入updatexml / extractvalue / 类型转换错误
  • NoSQL{"$ne":null}{"$where":"1==1"}、数组/类型替换
  • SSTI{{7*7}}${7*7}、`` 探测
  • 命令注入idwhoami、DNSLog 外带
  • 所有注入点至少尝试到 Level 4 绕过(见 CLAUDE.md 1.1 第五节)

七、修复建议

  • SQL:预编译/参数化查询,动态排序用白名单映射
  • NoSQL:禁止 $ 运算符进入查询条件,类型强校验
  • 命令:白名单命令 + 参数数组传递,禁止 shell 拼接
  • SSTI:模板引擎关闭危险特性(Jinja2 禁用 __class__ 链)
  • 表达式:禁止用户可控片段进入 SpEL/OGNL/EL 解释器

八、输出与报告要点

  • 完整 PoC(curl 命令),标注注入点参数与 payload
  • 差异对比证据(基线响应 vs 注入响应)
  • 影响面:可读取的库表、可执行的命令、可拿到的数据量
  • 根因分析:输入点 → 传播链 → Sink

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

Install and usage instructions live in the source repository linked above.

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Versions

  • v0.1.0 Imported from the upstream source.