OpenZeppelin Contracts up to 4.7.2 Signature ECDSA.recover/ECDSA.tryRecover integrity check

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability was found in OpenZeppelin Contracts up to 4.7.2 and classified as problematic. Affected by this issue is the function ECDSA.recover/ECDSA.tryRecover of the component Signature Handler. The manipulation with an unknown input leads to a integrity check vulnerability. Using CWE to declare the problem leads to CWE-354. The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published 08/15/2022 as GHSA-4h98-2769-gh6h. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2022-35961 since 07/15/2022. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 4.7.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be patching the affected component.

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 4.6
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.9
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integrity check
CWE: CWE-354 / CWE-345
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Contracts 4.7.3
Patch: github.com

Timelineinfo

07/15/2022 🔍
08/15/2022 +31 days 🔍
08/15/2022 +0 days 🔍
08/15/2022 +0 days 🔍

Sourcesinfo

Advisory: GHSA-4h98-2769-gh6h
Status: Confirmed

CVE: CVE-2022-35961 (🔍)

Entryinfo

Created: 08/15/2022 15:42
Changes: 08/15/2022 15:42 (54)
Complete: 🔍

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