Vulnerability Description
OpenZeppelin Contracts is a library for secure smart contract development. The functions `ECDSA.recover` and `ECDSA.tryRecover` are vulnerable to a kind of signature malleability due to accepting EIP-2098 compact signatures in addition to the traditional 65 byte signature format. This is only an issue for the functions that take a single `bytes` argument, and not the functions that take `r, v, s` or `r, vs` as separate arguments. The potentially affected contracts are those that implement signature reuse or replay protection by marking the signature itself as used rather than the signed message or a nonce included in it. A user may take a signature that has already been submitted, submit it again in a different form, and bypass this protection. The issue has been patched in 4.7.3.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openzeppelin | Contracts | >= 4.1.0, < 4.7.3 |
| Openzeppelin | Contracts Upgradeable | >= 4.1.0, < 4.7.3 |
Related Weaknesses (CWE)
References
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610PatchThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3Release NotesThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-Third Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610PatchThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3Release NotesThird Party Advisory
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-Third Party Advisory
FAQ
What is CVE-2022-35961?
CVE-2022-35961 is a vulnerability with a CVSS score of 7.9 (HIGH). OpenZeppelin Contracts is a library for secure smart contract development. The functions `ECDSA.recover` and `ECDSA.tryRecover` are vulnerable to a kind of signature malleability due to accepting EIP-...
How severe is CVE-2022-35961?
CVE-2022-35961 has been rated HIGH with a CVSS base score of 7.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-35961?
Check the references section above for vendor advisories and patch information. Affected products include: Openzeppelin Contracts, Openzeppelin Contracts Upgradeable.