CVE-2022-31172
July 21, 2022
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 Packages
@openzeppelin/contracts (NPM):
Affected version(s) >=4.1.0 <4.7.1Fix Suggestion:
Update to version 4.7.1@openzeppelin/contracts-upgradeable (NPM):
Affected version(s) >=4.1.0 <4.7.1Fix Suggestion:
Update to version 4.7.1Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.11
