7.9

CVSS Score

3.1

Basic Information

CVE ID

CVE-2022-35961

GHSA ID

GHSA-4h98-2769-gh6h

EPSS Score

0.02739%

CWE

CWE-354

Published

8/18/2022

Updated

2/2/2023

KEV Status

Technology

JavaScript

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CVE-2022-35961

CVE-2022-35961: OpenZeppelin Contracts vulnerable to ECDSA signature malleability

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.

(GitHub Advisory)

7.9

CVSS Score

3.1

Basic Information

CVE ID

CVE-2022-35961

GHSA ID

GHSA-4h98-2769-gh6h

EPSS Score

0.02739%

CWE

CWE-354

Published

8/18/2022

Updated

2/2/2023

KEV Status

Technology

JavaScript

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
@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

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability documentation explicitly identifies these two functions as accepting both traditional 65-byte signatures and EIP-2098 compact 64-byte signatures. The commit diff shows removal of code handling 64-byte signatures in tryRecover(bytes32,bytes), and CHANGELOG notes these specific functions were modified to prevent compact signature acceptance. Tests were updated to reject compact signatures, confirming the attack vector was through these function variants.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

### Imp**t T** *un*tions `***S*.r**ov*r` *n* `***S*.tryR**ov*r` *r* vuln*r**l* to * kin* o* si*n*tur* m*ll***ility *u* to ****ptin* *IP-**** *omp**t si*n*tur*s in ***ition to t** tr**ition*l ** *yt* si*n*tur* *orm*t. T*is is only *n issu* *or t** *u

Reasoning

T** vuln*r**ility *o*um*nt*tion *xpli*itly i**nti*i*s t**s* two *un*tions *s ****ptin* *ot* tr**ition*l **-*yt* si*n*tur*s *n* *IP-**** *omp**t **-*yt* si*n*tur*s. T** *ommit *i** s*ows r*mov*l o* *o** **n*lin* **-*yt* si*n*tur*s in `tryR**ov*r(*yt*s

7.9

Basic Information

Concerned about an active attack path?

CVE-2022-35961: OpenZeppelin Contracts vulnerable to ECDSA signature malleability

Impact

Patches

For more information

7.9

Basic Information

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability Intelligence
Miggo AI