Is CVE-2023-34234 in the CISA KEV catalog?

No. CVE-2023-34234 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-34234?

CVE-2023-34234 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2023-34234?

CVE-2023-34234 has an EPSS score of 0.60% (44th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-34234?

Upgrade contracts to 4.9.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-34234

MEDIUM

5.3

CVSS v3

NVD

Description

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.

CWE-862Missing Authorization

How to fix

Remediation Available

contractsNVD

Affected:>= 4.3.0, < 4.9.1Fixed in:4.9.1CVE-2023-34234derived from NVD

contracts upgradeableNVD

Affected:>= 4.3.0, < 4.9.1Fixed in:4.9.1CVE-2023-34234derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.60%probability of exploitation in 30 days

44thpercentile

Moderate risk: more likely to be exploited than 44% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Related Vulnerabilities

Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-39226	Critical	9.8	100%	KEV	Fix
CVE-2022-0543	Critical	10.0	100%	KEV	Fix
CVE-2021-21978	Critical	9.8	99%	-	Fix
CVE-2023-52163	High	8.8	96%	KEV	-
CVE-2022-1329	High	8.8	93%	-	-
CVE-2023-6875	Critical	9.8	90%	-	-

Embed a live status badge for CVE-2023-34234

Markdown

[![CVE-2023-34234](https://tridentstack.com/cve/badge/CVE-2023-34234.svg)](https://tridentstack.com/cve/CVE-2023-34234)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-34234"><img src="https://tridentstack.com/cve/badge/CVE-2023-34234.svg" alt="CVE-2023-34234"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.