GHSA-4g63-c64m-25w9
OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers
Quick fix
GHSA-4g63-c64m-25w9 — @openzeppelin/contracts: upgrade to the fixed version with the command below.
npm install @openzeppelin/contracts@4.7.1Details
### 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 [security@openzeppelin.com](mailto:security@openzeppelin.com).
Are you affected?
Enter the version of the package you're using.
Affected packages
4.1.0Fixed in: 4.7.1npm install @openzeppelin/contracts@4.7.14.1.0Fixed in: 4.7.1npm install @openzeppelin/contracts-upgradeable@4.7.1