CVE-2022-35961

ECDSA signature malleability in OpenZeppelin Contracts

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

OpenZeppelin Contracts es una biblioteca para el desarrollo de contratos inteligentes seguros. Las funciones "ECDSA.recover" y "ECDSA.tryRecover" son vulnerables a un tipo de maleabilidad de la firma debido a que aceptan firmas compactas EIP-2098 además del formato de firma tradicional de 65 bytes. Esto sólo es un problema para las funciones que toman un único argumento "bytes", y no las funciones que toman "r, v, s" o "r, vs" como argumentos separados. Los contratos potencialmente afectados son los que implementan el reúso de la firma o la protección contra repeticiones al marcar la propia firma como usada en lugar del mensaje firmado o un nonce incluido en él. Un usuario puede tomar una firma que ya ha sido enviada, enviarla de nuevo en una forma diferente, y omitir esta protección. El problema ha sido parcheado en versión 4.7.3.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

None

Integrity

Complete

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-07-15 CVE Reserved
2022-08-14 CVE Published
2024-03-06 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-354: Improper Validation of Integrity Check Value

CAPEC

References (3)

URL	Tag	Source
https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.7.3	Release Notes
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/OpenZeppelin/openzeppelin-contracts/pull/3610	2022-12-06

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openzeppelin Search vendor "Openzeppelin"		Contracts Search vendor "Openzeppelin" for product "Contracts"				>= 4.1.0 < 4.7.3 Search vendor "Openzeppelin" for product "Contracts" and version " >= 4.1.0 < 4.7.3"		node.js		Affected
Openzeppelin Search vendor "Openzeppelin"		Contracts Upgradeable Search vendor "Openzeppelin" for product "Contracts Upgradeable"				>= 4.1.0 < 4.7.3 Search vendor "Openzeppelin" for product "Contracts Upgradeable" and version " >= 4.1.0 < 4.7.3"		node.js		Affected