ghsa-4h98-2769-gh6h
Vulnerability from github
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 security@openzeppelin.com.
{ "affected": [ { "package": { "ecosystem": "npm", "name": "@openzeppelin/contracts" }, "ranges": [ { "events": [ { "introduced": "4.1.0" }, { "fixed": "4.7.3" } ], "type": "ECOSYSTEM" } ] }, { "package": { "ecosystem": "npm", "name": "@openzeppelin/contracts-upgradeable" }, "ranges": [ { "events": [ { "introduced": "4.1.0" }, { "fixed": "4.7.3" } ], "type": "ECOSYSTEM" } ] } ], "aliases": [ "CVE-2022-35961" ], "database_specific": { "cwe_ids": [ "CWE-354" ], "github_reviewed": true, "github_reviewed_at": "2022-08-18T19:00:43Z", "nvd_published_at": "2022-08-15T11:21:00Z", "severity": "HIGH" }, "details": "### Impact\n\nThe 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.\n\nThe 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.\n\n### Patches\n\nThe issue has been patched in 4.7.3.\n\n\n### For more information\n\nIf you have any questions or comments about this advisory, or need assistance deploying a fix, email us at [security@openzeppelin.com](mailto:security@openzeppelin.com).\n", "id": "GHSA-4h98-2769-gh6h", "modified": "2022-08-18T19:00:43Z", "published": "2022-08-18T19:00:43Z", "references": [ { "type": "WEB", "url": "https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h" }, { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-35961" }, { "type": "WEB", "url": "https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610" }, { "type": "WEB", "url": "https://github.com/OpenZeppelin/openzeppelin-contracts/commit/d693d89d99325f395182e4f547dbf5ff8e5c3c87" }, { "type": "PACKAGE", "url": "https://github.com/OpenZeppelin/openzeppelin-contracts" }, { "type": "WEB", "url": "https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L", "type": "CVSS_V3" } ], "summary": "OpenZeppelin Contracts vulnerable to ECDSA signature malleability" }
Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.