mcp-server-semgrep/semgrep-rules/python/lang/security/audit/network/bind.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: avoid-bind-to-all-interfaces
  message: >-
    Running `socket.bind` to 0.0.0.0, or empty string could unexpectedly
    expose the server publicly as it binds to all available interfaces. Consider
    instead getting correct address from an environment variable or
    configuration file.
  metadata:
    cwe:
    - 'CWE-200: Exposure of Sensitive Information to an Unauthorized Actor'
    owasp:
    - A01:2021 - Broken Access Control
    category: security
    technology:
    - python
    references:
    - https://owasp.org/Top10/A01_2021-Broken_Access_Control
    cwe2021-top25: true
    subcategory:
    - vuln
    likelihood: HIGH
    impact: MEDIUM
    confidence: HIGH
  languages: [python]
  severity: INFO
  pattern-either:
  - pattern: |
      $S = socket.socket(...)
      ...
      $S.bind(("0.0.0.0", ...))
  - pattern: |
      $S = socket.socket(...)
      ...
      $S.bind(("::", ...))
  - pattern: |
      $S = socket.socket(...)
      ...
      $S.bind(("", ...))