CVE-2022-31170CWE-20

OpenZeppelin Contracts's ERC165Checker may revert instead of returning false

High · published July 21, 2022

CVSS v3.1
7.5
EPSS
1%
Percentile
55.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00788 · 55.7th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2022-07-21T14:00Z
EPSS history
Timeline
  • 21 JUL 14:00Z
    OpenZeppelin Contracts's ERC165Checker may revert instead of returning false
    cvelistv5