mcp-server-semgrep/semgrep-rules/scala/lang/security/audit/dangerous-shell-run.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: dangerous-shell-run
  patterns:
  - pattern: Seq($SH, "-c", $CMD, ...)
  - pattern-not: Seq($SH, "-c", "...", ...)
  - pattern-inside: |
      import sys.process
      ...
  - pattern-not-inside: |
      $CMD = "..."
      ...
  - pattern-either:
    - pattern-inside: Seq(...).!
    - pattern-inside: Seq(...).!!
    - pattern-inside: Seq(...).lazyLines
  - metavariable-regex:
      metavariable: $SH
      regex: '"(sh|bash|ksh|csh|tcsh|zsh)"'
  message: >-
    Found dynamic content used for the external process.
    This is dangerous if arbitrary data can reach this function call because it allows a malicious actor
    to execute commands.
    Ensure your variables are not controlled by users or sufficiently sanitized.
  languages: [scala]
  severity: ERROR
  metadata:
    category: security
    cwe:
    - "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"
    owasp:
    - A01:2017 - Injection
    - A03:2021 - Injection
    technology:
    - scala
    confidence: LOW
    references:
    - https://owasp.org/Top10/A03_2021-Injection
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: HIGH