Is CVE-2023-20032 in the CISA KEV catalog?

No. CVE-2023-20032 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-20032?

CVE-2023-20032 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-20032?

CVE-2023-20032 has an EPSS score of 29.31% (98th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-20032?

Upgrade clamav on debian 11 to 0.103.8+dfsg-0+deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2023-20032

CRITICALEPSS 98th pctl

9.8

CVSS v3

NVD

Description

On Feb 15, 2023, the following vulnerability in the ClamAV scanning library was disclosed: A vulnerability in the HFS+ partition file parser of ClamAV versions 1.0.0 and earlier, 0.105.1 and earlier, and 0.103.7 and earlier could allow an unauthenticated, remote attacker to execute arbitrary code. This vulnerability is due to a missing buffer size check that may result in a heap buffer overflow write. An attacker could exploit this vulnerability by submitting a crafted HFS+ partition file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the ClamAV scanning process, or else crash the process, resulting in a denial of service (DoS) condition. For a description of this vulnerability, see the ClamAV blog ["https://blog.clamav.net/"].

CWE-120Classic Buffer Overflow CWE-787Out-of-bounds Write

How to fix

Remediation Available

clamavDebian

Fixed in:0.103.8+dfsg-0+deb11u1CVE-2023-20032

Fixed in:1.0.1+dfsg-1CVE-2023-20032

clamavUbuntu

Fixed in:0.103.8+dfsg-0ubuntu0.14.04.1+esm1USN-5887-1

Fixed in:0.103.8+dfsg-0ubuntu0.16.04.1+esm1USN-5887-1

Fixed in:0.103.8+dfsg-0ubuntu0.18.04.1USN-5887-1

Fixed in:0.103.8+dfsg-0ubuntu0.20.04.1USN-5887-1

Fixed in:0.103.8+dfsg-0ubuntu0.22.04.1USN-5887-1

Fixed in:0.103.8+dfsg-0ubuntu0.22.10.1USN-5887-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

29.31%probability of exploitation in 30 days

98thpercentile

Very high risk: more likely to be exploited than 98% of all known CVEs.

References

Vendor Advisory1

sec.cloudapps.cisco.com

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	92%	-	Fix

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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.