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

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: insecure-use-string-copy-fn
  pattern-either:
  - pattern: strcpy(...)
  - pattern: strncpy(...)
  message: >-
    Finding triggers whenever there is a strcpy or strncpy used.
    This is an issue because strcpy does not affirm the size of the destination array
    and strncpy will not automatically NULL-terminate strings.
    This can lead to buffer overflows, which can cause program crashes
    and potentially let an attacker inject code in the program.
    Fix this by using strcpy_s instead (although note that strcpy_s is an
    optional part of the C11 standard, and so may not be available).
  metadata:
    cwe:
    - 'CWE-676: Use of Potentially Dangerous Function'
    references:
    - https://cwe.mitre.org/data/definitions/676
    - https://nvd.nist.gov/vuln/detail/CVE-2019-11365
    category: security
    technology:
    - c
    confidence: LOW
    subcategory:
    - audit
    likelihood: LOW
    impact: HIGH
  languages: [c]
  severity: WARNING