Is CVE-2023-4156 in the CISA KEV catalog?

No. CVE-2023-4156 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-4156?

CVE-2023-4156 has a CVSS v3 base score of 4.4 (MEDIUM).

What is the EPSS score for CVE-2023-4156?

CVE-2023-4156 has an EPSS score of 0.43% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-4156?

Upgrade gawk on debian 12 to 1:5.2.1-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-4156

MEDIUM

4.4

CVSS v3

NVD

Description

A heap out-of-bounds read flaw was found in builtin.c in the gawk package. This issue may lead to a crash and could be used to read sensitive information.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

gawkDebian

Fixed in:1:5.2.1-1CVE-2023-4156

gawkUbuntu

Fixed in:1:4.0.1+dfsg-2.1ubuntu2+esm1USN-6373-1

Fixed in:1:4.1.3+dfsg-0.1ubuntu0.1~esm1USN-6373-1

Fixed in:1:4.1.4+dfsg-1ubuntu0.1~esm1USN-6373-1

Fixed in:1:5.0.1+dfsg-1ubuntu0.1USN-6373-1

Fixed in:1:5.1.0-1ubuntu0.1USN-6373-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityLow

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

Exploit Intelligence

0.43%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Exploit2

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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Markdown

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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.