mcp-server-semgrep/semgrep-rules/javascript/aws-lambda/security/tainted-sql-string.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: tainted-sql-string
  message: >-
    Detected user input used to manually construct a SQL string. This is usually
    bad practice because manual construction could accidentally result in a SQL
    injection. An attacker could use a SQL injection to steal or modify contents
    of the database. Instead, use a parameterized query which is available
    by default in most database engines. Alternatively, consider using an
    object-relational mapper (ORM) such as Sequelize which will protect your queries.
  metadata:
    references:
    - https://owasp.org/www-community/attacks/SQL_Injection
    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
    cwe2022-top25: true
    cwe2021-top25: true
    subcategory:
    - vuln
    likelihood: LOW
    impact: MEDIUM
    confidence: LOW
  languages:
  - javascript
  - typescript
  severity: ERROR
  mode: taint
  pattern-sources:
  - patterns:
    - pattern-either:
      - pattern-inside: |
          exports.handler = function ($EVENT, ...) {
            ...
          }
      - pattern-inside: |
          function $FUNC ($EVENT, ...) {...}
          ...
          exports.handler = $FUNC
      - pattern-inside: |
          $FUNC = function ($EVENT, ...) {...}
          ...
          exports.handler = $FUNC
    - pattern: $EVENT
  pattern-sinks:
  - patterns:
    - pattern-either:
      - patterns:
        - pattern-either:
          - pattern: |
              "$SQLSTR" + $EXPR
          - pattern: |
              "$SQLSTR".concat(...)
          - pattern: util.format($SQLSTR, ...)
        - metavariable-regex:
            metavariable: $SQLSTR
            regex: .*\b(?i)(select|delete|insert|create|update|alter|drop)\b.*
      - patterns:
        - pattern: |
            `...${...}...`
        - pattern-regex: |
            .*\b(?i)(select|delete|insert|create|update|alter|drop)\b.*
    - pattern-not-inside: |
        console.$LOG(...)