mcp-server-semgrep/semgrep-rules/terraform/aws/security/aws-iam-admin-policy.yaml

MCP Server for Semgrep Integration - static code analysis with AI

rules:
- id: aws-iam-admin-policy
  patterns:
  - pattern-inside: |
      resource "aws_iam_policy" $ANYTHING {
        ...
      }
  - pattern: policy = "$STATEMENT"
  - metavariable-pattern:
      metavariable: $STATEMENT
      language: json
      patterns:
      - pattern-not-inside: |
          {..., "Effect": "Deny", ...}
      - pattern-either:
        - pattern: |
            {..., "Action": [..., "*", ...], "Resource": [..., "*", ...], ...}
        - pattern: |
            {..., "Action": "*", "Resource": "*", ...}
        - pattern: |
            {..., "Action": "*", "Resource": [...], ...}
        - pattern: |
            {..., "Action": [...], "Resource": "*", ...}
  message: >-
    Detected admin access granted in your policy. This means anyone with this policy can perform administrative
    actions. Instead, limit actions and resources to what you need according to least privilege.
  metadata:
    category: security
    technology:
    - aws
    - terraform
    owasp:
    - A05:2021 - Security Misconfiguration
    cwe:
    - 'CWE-732: Incorrect Permission Assignment for Critical Resource'
    references:
    - https://cwe.mitre.org/data/definitions/732.html
    cwe2021-top25: true
    subcategory:
    - vuln
    likelihood: MEDIUM
    impact: MEDIUM
    confidence: MEDIUM
  languages: [hcl]
  severity: ERROR