mcp-server-semgrep/semgrep-rules/java/lang/security/audit/java-reverse-shell.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: java-reverse-shell
  patterns:
  - pattern-either:
    - pattern: |
        Socket $S=new Socket(...);
        ...
        InputStream $SI = $S.getInputStream();
        ...
        while(!$S.isClosed())
        {
          ...
          while($SI.available()>0)$PO.write($SI.read());
          ...
          $SO.flush();
          ...
        }
  - pattern-inside: |
      Process $P=new ProcessBuilder(...).redirectErrorStream(true).start();
      ...
      $P.destroy();
  message: Semgrep found potential reverse shell behavior
  severity: WARNING
  metadata:
    cwe:
    - "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')"
    category: security
    technology: [java]
    owasp:
    - A01:2017 - Injection
    - A03:2021 - Injection
    references:
    - https://owasp.org/Top10/A03_2021-Injection
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: HIGH
    confidence: LOW
  languages:
  - java