mcp-server-semgrep/semgrep-rules/java/lang/security/audit/crypto/ssl/insecure-hostname-verifier.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: insecure-hostname-verifier
  message: >-
    Insecure HostnameVerifier implementation detected. This will accept
    any SSL certificate with any hostname, which creates the possibility
    for man-in-the-middle attacks.
  metadata:
    cwe:
    - 'CWE-295: Improper Certificate Validation'
    owasp:
    - A03:2017 - Sensitive Data Exposure
    - A07:2021 - Identification and Authentication Failures
    source-rule-url: https://find-sec-bugs.github.io/bugs.htm#WEAK_HOSTNAME_VERIFIER
    asvs:
      section: V9 Communications Verification Requirements
      control_id: 9.2.1 Weak TLS
      control_url: https://github.com/OWASP/ASVS/blob/master/4.0/en/0x17-V9-Communications.md#v92-server-communications-security-requirements
      version: '4'
    category: security
    technology:
    - java
    references:
    - https://owasp.org/Top10/A07_2021-Identification_and_Authentication_Failures
    subcategory:
    - audit
    likelihood: LOW
    impact: LOW
    confidence: LOW
  severity: WARNING
  languages: [java]
  pattern-either:
  - pattern: |
      class $CLASS implements HostnameVerifier {
        ...
        public boolean verify(...) { return true; }
      }
  - pattern: |-
      new HostnameVerifier(...){
        public boolean verify(...) {
          return true;
        }
      }
  - pattern: import org.apache.http.conn.ssl.NoopHostnameVerifier;