mcp-server-semgrep/semgrep-rules/javascript/lang/security/spawn-git-clone.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: spawn-git-clone
  message: >-
    Git allows shell commands to be specified in ext URLs for remote repositories.
    For example, git clone 'ext::sh -c whoami% >&2' will execute the whoami command
    to try to connect to a remote repository.
    Make sure that the URL is not controlled by external input.
  metadata:
    cwe:
    - "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"
    owasp:
    - A01:2017 - Injection
    - A03:2021 - Injection
    category: security
    technology:
    - git
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
    references:
    - https://owasp.org/Top10/A03_2021-Injection
  languages:
  - javascript
  - typescript
  severity: ERROR
  patterns:
  - pattern-either:
    - pattern: spawn('git', ['clone',...,$F])
    - pattern: $X.spawn('git', ['clone',...,$F])
    - pattern: spawn('git', ['clone',...,$P,$F])
    - pattern: $X.spawn('git', ['clone',...,$P,$F])
  - pattern-not: spawn('git', ['clone',...,"..."])
  - pattern-not: $X.spawn('git', ['clone',...,"..."])
  - pattern-not: spawn('git', ['clone',...,"...","..."])
  - pattern-not: $X.spawn('git', ['clone',...,"...","..."])