GHSA-qh9x-gcfh-pcrw
OpenZeppelin Contracts's ERC165Checker may revert instead of returning false
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 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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 [[email protected]](mailto:[email protected]).
References
External links from the advisory. They lead to third-party sites.