yaml.semgrep.slow-pattern-top-ellipsis.slow-pattern-top-ellipsis

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Using the ellipsis operator ... at the top of the pattern drastically slows down the rule performance.

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Defintion

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rules:
  - id: slow-pattern-top-ellipsis
    languages:
      - yaml
    message: Using the ellipsis operator `...` at the top of the pattern drastically
      slows down the rule performance.
    patterns:
      - pattern-either:
          - pattern-inside: |
              pattern-inside: $X
          - pattern-inside: |
              pattern-not-inside: $X
          - pattern-inside: |
              pattern: $X
          - pattern-inside: |
              pattern-not: $X
      - pattern-regex: \|\s*\n\s*\.\.\.\s*\n[^\n]*\n\s*\.\.\.
    severity: WARNING
    metadata:
      category: performance
      technology:
        - semgrep
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]

Examples

slow-pattern-top-ellipsis.test.yaml

rules:
  - id: javascript.phantom.security.audit.phantom-injection.phantom-injection
    message: >-
      If unverified user data can reach the `phantom` page methods it can result in Server-Side Request Forgery vulnerabilities
    severity: WARNING
    languages:
      - javascript
    patterns:
      #ruleid: slow-pattern-top-ellipsis
      - pattern: |
          ...
          $PHANTOM = require('phantom');
          ...
      - pattern-not-inside: |
          var $INPUT = "...";
          ...
  - id: javascript.playwright.security.audit.playwright-evaluate-arg-injection.playwright-evaluate-arg-injection
    message: >-
      If unverified user data can reach the `evaluate` method it can result in Server-Side Request Forgery vulnerabilities
    severity: WARNING
    languages:
      - javascript
    patterns:
      #ruleid: slow-pattern-top-ellipsis
      - pattern-inside: |
          ...
          require('playwright');
          ...
      - pattern-either:
          - pattern-inside: function $FUNC (...,$INPUT,...) {...}
          - pattern-inside: function (...,$INPUT,...) {...}