Vulnerability · Published Aug 14, 2022 · Assigned by GitHub_M
CVE-2022-35961ECDSA signature malleability in OpenZeppelin Contracts
High 7.9
In plain English
A high-severity security flaw in openzeppelin-contracts from OpenZeppelin. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @openzeppelin/contracts | 4.7.3 | GHSA-4h98-2769-gh6h |
| npm | @openzeppelin/contracts-upgradeable | 4.7.3 | GHSA-4h98-2769-gh6h |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenZeppelin | openzeppelin-contracts | >= 4.1.0, < 4.7.3 |
Weakness: CWE-354 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L