GHSA-4g63-c64m-25w9
OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @openzeppelin/contracts | >= 4.1.0, < 4.7.1 | 4.7.1 |
| npm | @openzeppelin/contracts-upgradeable | >= 4.1.0, < 4.7.1 | 4.7.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
`SignatureChecker.isValidSignatureNow` is not expected to 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-1271 as expected.
The contracts that may be affected are those that use `SignatureChecker` to check the validity of a signature and handle invalid signatures in a way other than reverting. We believe this to be unlikely.
### 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.