mcp-server-semgrep/semgrep-rules/java/lang/security/audit/script-engine-injection.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: script-engine-injection
  message: >-
    Detected potential code injection using ScriptEngine. Ensure
    user-controlled data cannot enter '.eval()', otherwise, this is
    a code injection vulnerability.
  metadata:
    cwe:
    - "CWE-94: Improper Control of Generation of Code ('Code Injection')"
    owasp:
    - A03:2021 - Injection
    source-rule-url: https://find-sec-bugs.github.io/bugs.htm#SCRIPT_ENGINE_INJECTION
    category: security
    technology:
    - java
    references:
    - https://owasp.org/Top10/A03_2021-Injection
    cwe2022-top25: true
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  severity: WARNING
  languages: [java]
  patterns:
  - pattern-either:
    - pattern-inside: |
        class $CLASS {
          ...
          ScriptEngine $SE;
          ...
        }
    - pattern-inside: |
        class $CLASS {
          ...
          ScriptEngine $SE = ...;
          ...
        }
    - pattern-inside: |
        $X $METHOD(...) {
          ...
          ScriptEngine $SE = ...;
          ...
        }
  - pattern: |
      $X $METHOD(...) {
        ...
        $SE.eval(...);
        ...
      }
  - pattern-not: |
      $X $METHOD(...) {
        ...
        $SE.eval("...");
        ...
      }
  - pattern-not: |
      $X $METHOD(...) {
        ...
        String $S = "...";
        ...
        $SE.eval($S);
        ...
      }