CVEvulnerability

CVE-2022-35961

6.5 MEDIUM Published 2022-08-15 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-08-15
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.9 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
CWE-354

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.

Affected configurations

• openzeppelin contracts (>= 4.1.0 < 4.7.3) • openzeppelin contracts upgradeable (>= 4.1.0 < 4.7.3)

Related

Weakness · CWE (1)

  • CWE-354 Improper Validation of Integrity Check Value weakness

References