OpenZeppelin Contracts vulnerable to ECDSA signature malleability

中 6.5CVE-2022-35961 · GHSA-4h98-2769-gh6h · 15/08/2022 公開 · 17/06/2026 更新

要点

CVE-2022-35961 は contracts (openzeppelin), contracts upgradeable (openzeppelin), @openzeppelin/contracts に影響する深刻度「中」 (CVSS 6.5) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.45%（全脆弱性の 39.3% より高い）。
対処：4.7.3 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
contracts openzeppelin	`≥ 4.1.0, < 4.7.3`	`4.7.3`
contracts upgradeable openzeppelin	`≥ 4.1.0, < 4.7.3`	`4.7.3`
@openzeppelin/contracts npm	`≥ 4.1.0, < 4.7.3`	`4.7.3`
@openzeppelin/contracts-upgradeable npm	`≥ 4.1.0, < 4.7.3`	`4.7.3`

概要

Impact

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.

Patches

The issue has been patched in 4.7.3.

For more information

If you have any questions or comments about this advisory, or need assistance deploying a fix, email us at [email protected].

NVD の説明

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.