CVE-2022-31170
OpenZeppelin Contracts's ERC165Checker may revert instead of returning false
Impact
### Impact `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. ### Patches The issue was patched in 4.7.1. ### References https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552 ### For more information If you have any questions or comments about this advisory, or need assistance deploying the fix, email us at [security@openzeppelin.com](mailto:security@openzeppelin.com).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @openzeppelin/contracts | >= 4.0.0, < 4.7.1 | 4.7.1 |
| npm | @openzeppelin/contracts-upgradeable | >= 4.0.0, < 4.7.1 | 4.7.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openzeppelin | Contracts | from 4.0.0 before 4.7.1 |