mcp-server-semgrep/semgrep-rules/generic/nginx/security/insecure-ssl-version.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: insecure-ssl-version
  patterns:
  - pattern-not: ssl_protocols TLSv1.2 TLSv1.3;
  - pattern-not: ssl_protocols TLSv1.3 TLSv1.2;
  - pattern-not: ssl_protocols TLSv1.2;
  - pattern-not: ssl_protocols TLSv1.3;
  - pattern: ssl_protocols ...;
  paths:
    include:
    - '*.conf'
    - '*.vhost'
    - sites-available/*
    - sites-enabled/*
  languages:
  - generic
  severity: WARNING
  message: >-
    Detected use of an insecure SSL version. Secure SSL versions are
    TLSv1.2 and TLS1.3; older versions are known to be broken and are
    susceptible to attacks. Prefer use of TLSv1.2 or later.
  metadata:
    cwe:
    - 'CWE-326: Inadequate Encryption Strength'
    references:
    - https://www.acunetix.com/blog/web-security-zone/hardening-nginx/
    - https://www.acunetix.com/blog/articles/tls-ssl-cipher-hardening/
    category: security
    technology:
    - nginx
    confidence: HIGH
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A02:2021 - Cryptographic Failures
    subcategory:
    - audit
    likelihood: MEDIUM
    impact: MEDIUM