rules:
 -
    id: unrestricted-transferownership
    message: Unrestricted transferOwnership
    metadata:
        category: security
        technology:
            - solidity
        cwe: "CWE-284: Improper Access Control"
        confidence: LOW
        likelihood: HIGH
        impact: HIGH
        subcategory:
            - vuln
        references:
        - https://medium.com/quillhash/decoding-ragnarok-online-invasion-44k-exploit-quillaudits-261b7e23b55
        - https://www.bscscan.com/address/0xe48b75dc1b131fd3a8364b0580f76efd04cf6e9c
    patterns:
        - pattern-either:
          - pattern: function transferOwnership(address $X) public {...}
          - pattern: function transferOwnership(address $X) external {...}
        - pattern-not: |
            function transferOwnership(address $X) $M {...}
        - pattern-not: |
            function transferOwnership(address $X) $M(...) {...}
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              require(<... msg.sender ...>, ...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              require(<... _msgSender ...>, ...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              if (<... msg.sender ...>) {
                ...
              }
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              if (<... _msgSender ...>) {
                ...
              }
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              onlyOwner(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              requireOwner(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              _requireOwnership(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              $C._enforceIsContractOwner(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              $C._enforceOwner(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {
              ...
              $C.enforceIsContractOwner(...);
              ...
            }
        - pattern-not: |
            function transferOwnership(address $X) {}
    languages: 
    - solidity
    severity: ERROR