7.9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
0.001 Low
EPSS
Percentile
26.2%
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.
If you have any questions or comments about this advisory, or need assistance deploying a fix, email us at [email protected].
github.com/OpenZeppelin/openzeppelin-contracts
github.com/OpenZeppelin/openzeppelin-contracts/commit/d693d89d99325f395182e4f547dbf5ff8e5c3c87
github.com/OpenZeppelin/openzeppelin-contracts/pull/3610
github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3
github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h
nvd.nist.gov/vuln/detail/CVE-2022-35961