mcp-server-semgrep/semgrep-rules/go/lang/security/audit/crypto/use_of_weak_rsa_key.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: use-of-weak-rsa-key
  message: RSA keys should be at least 2048 bits
  languages: [go]
  severity: WARNING
  metadata:
    cwe:
    - 'CWE-326: Inadequate Encryption Strength'
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A02:2021 - Cryptographic Failures
    source-rule-url: https://github.com/securego/gosec/blob/master/rules/rsa.go
    references:
    - https://cheatsheetseries.owasp.org/cheatsheets/Cryptographic_Storage_Cheat_Sheet.html#algorithms
    category: security
    technology:
    - go
    confidence: HIGH
    subcategory:
    - audit
    likelihood: HIGH
    impact: MEDIUM
  patterns:
  - pattern-either:
    - pattern: |
        rsa.GenerateKey(..., $BITS)
    - pattern: |
        rsa.GenerateMultiPrimeKey(..., $BITS)
  - metavariable-comparison:
      metavariable: $BITS
      comparison: $BITS < 2048
  - focus-metavariable:
      - $BITS
  fix: |
    2048