CVE-2022-31170 OpenZeppelin Contracts's ERC165Checker may revert instead of returning false

2022-07-2114:00:18

CWE-20

GitHub_M

www.cve.org

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

0.001 Low

EPSS

Percentile

26.9%

JSON

OpenZeppelin Contracts is a library for smart contract development. Versions 4.0.0 until 4.7.1 are vulnerable to ERC165Checker reverting instead of returning false. ERC165Checker.supportsInterface is designed to always successfully return a boolean, and under no circumstance revert. However, an incorrect assumption about Solidity 0.8’s abi.decode allows some cases to revert, given a target contract that doesn’t implement EIP-165 as expected, specifically if it returns a value other than 0 or 1. The contracts that may be affected are those that use ERC165Checker to check for support for an interface and then handle the lack of support in a way other than reverting. The issue was patched in version 4.7.1.

CNA Affected

[
  {
    "product": "openzeppelin-contracts",
    "vendor": "OpenZeppelin",
    "versions": [
      {
        "status": "affected",
        "version": ">= 4.0.0, < 4.7.1"
      }
    ]
  }
]