mcp-server-semgrep/semgrep-rules/ruby/aws-lambda/security/sequel-sqli.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: sequel-sqli
  languages:
  - ruby
  message: >-
    Detected SQL statement that is tainted by `event` object. This could lead to SQL injection if the
    variable is user-controlled
    and not properly sanitized. In order to prevent SQL injection,
    use parameterized queries or prepared statements instead.
    You can use parameterized statements like so:
    `DB['select * from items where name = ?', name]`
  mode: taint
  metadata:
    references:
    - https://github.com/jeremyevans/sequel#label-Arbitrary+SQL+queries
    category: security
    owasp:
    - A01:2017 - Injection
    - A03:2021 - Injection
    cwe:
    - "CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')"
    technology:
    - aws-lambda
    - sequel
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: HIGH
    confidence: MEDIUM
  pattern-sinks:
  - patterns:
    - pattern: $QUERY
    - pattern-either:
      - pattern: DB[$QUERY,...]
      - pattern: DB.run($QUERY,...)
    - pattern-inside: |
        require 'sequel'
        ...
  pattern-sources:
  - patterns:
    - pattern: event
    - pattern-inside: |
        def $HANDLER(event, context)
          ...
        end
  severity: WARNING