rules:
- id: disallow-old-tls-versions
  message: >-
    Detects creations of tls configuration objects with an insecure MinVersion of TLS.
    These protocols are deprecated due to POODLE, man in the middle attacks, and other vulnerabilities.
  severity: WARNING
  metadata:
    likelihood: HIGH
    impact: MEDIUM
    confidence: HIGH
    category: security
    cwe: 'CWE-319: Cleartext Transmission of Sensitive Information'
    owasp: 'A03:2017 - Sensitive Data Exposure'
    references:
    - https://stackoverflow.com/questions/26429751/java-http-clients-and-poodle
    subcategory:
    - vuln
    technology:
    - go
    vulnerability: Insecure Transport
  languages: [go]
  patterns:
  - pattern-either:
    - pattern: |
        tls.Config{..., MinVersion: $TLS.$VERSION, ...}
    - pattern: |
        $CONFIG = &tls.Config{...}
        ...
        $CONFIG.MinVersion = $TLS.$VERSION
  - metavariable-regex:
      metavariable: $VERSION
      regex: (VersionTLS10|VersionTLS11|VersionSSL30)