mcp-server-semgrep/semgrep-rules/c/lang/security/insecure-use-strtok-fn.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: insecure-use-strtok-fn
  pattern: strtok(...)
  message: >-
    Avoid using 'strtok()'. This function directly modifies the first argument buffer,
    permanently erasing the
    delimiter character. Use 'strtok_r()' instead.
  metadata:
    cwe:
    - 'CWE-676: Use of Potentially Dangerous Function'
    references:
    - https://wiki.sei.cmu.edu/confluence/display/c/STR06-C.+Do+not+assume+that+strtok%28%29+leaves+the+parse+string+unchanged
    - https://man7.org/linux/man-pages/man3/strtok.3.html#BUGS
    - https://stackoverflow.com/a/40335556
    category: security
    technology:
    - c
    confidence: LOW
    subcategory:
    - audit
    likelihood: LOW
    impact: HIGH
  languages: [c]
  severity: WARNING