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.
Weakness
The product does not validate or incorrectly validates the integrity check values or “checksums” of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Contracts | Openzeppelin | 4.1.0 (including) | 4.7.3 (excluding) |
| Contracts_upgradeable | Openzeppelin | 4.1.0 (including) | 4.7.3 (excluding) |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/145.html
- https://cwe.mitre.org/data/definitions/463.html
- https://cwe.mitre.org/data/definitions/75.html
References
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h