CVE-2022-31172

OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers

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.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: OpenZeppelin openzeppelin-contracts
Published at:
Updated at:

References

Link Tags
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4g63-c64m-25w9 third party advisory
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3552 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-31172?
CVE-2022-31172 has been scored as a high severity vulnerability.
How to fix CVE-2022-31172?
To fix CVE-2022-31172, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-31172 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-31172 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-31172?
CVE-2022-31172 affects OpenZeppelin openzeppelin-contracts.
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