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.
The issue was patched in 4.7.1.
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552
If you have any questions or comments about this advisory, or need assistance deploying the fix, email us at security@openzeppelin.com.
{ "cwe_ids": [ "CWE-20", "CWE-347" ], "severity": "HIGH", "github_reviewed_at": "2022-07-21T22:33:37Z", "github_reviewed": true, "nvd_published_at": "2022-07-22T04:15:00Z" }