Description
OpenZeppelin Contracts is a library for smart contract development. Versions 4.1.0 until 4.7.1 are vulnerable to the SignatureChecker reverting. `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. The issue was patched in version 4.7.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenZeppelin | openzeppelin-contracts | >= 4.1.0, < 4.7.1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | @openzeppelin/contracts | >= 4.1.0, < 4.7.1 | 4.7.1 | GHSA-4g63-c64m-25w9 |
| npm | @openzeppelin/contracts-upgradeable | >= 4.1.0, < 4.7.1 | 4.7.1 | GHSA-4g63-c64m-25w9 |