CVE-2023-34234

Governor proposal creation may be blocked by frontrunning in OpenZeppelin

Severity Score

5.3

*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 smart contract development. By frontrunning the creation of a proposal, an attacker can become the proposer and gain the ability to cancel it. The attacker can do this repeatedly to try to prevent a proposal from being proposed at all. This impacts the `Governor` contract in v4.9.0 only, and the `GovernorCompatibilityBravo` contract since v4.3.0. This problem has been patched in 4.9.1 by introducing opt-in frontrunning protection. Users are advised to upgrade. Users unable to upgrade may submit the proposal creation transaction to an endpoint with frontrunning protection as a workaround.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-05-31 CVE Reserved
2023-06-07 CVE Published
2024-08-02 CVE Updated
2024-12-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-862: Missing Authorization

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://github.com/OpenZeppelin/openzeppelin-contracts/commit/d9474327a492f9f310f31bc53f38dbea56ed9a57	2023-06-15

URL	Date	SRC
https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-5h3x-9wvq-w4m2	2023-06-15

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"				>= 4.3.0 < 4.9.1 Search vendor "Openzeppelin" for product "Contracts" and version " >= 4.3.0 < 4.9.1"		node.js		Affected
Openzeppelin Search vendor "Openzeppelin"		Contracts Upgradeable Search vendor "Openzeppelin" for product "Contracts Upgradeable"				>= 4.3.0 < 4.9.1 Search vendor "Openzeppelin" for product "Contracts Upgradeable" and version " >= 4.3.0 < 4.9.1"		node.js		Affected