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CVE-2023-20032

CRITICALCVSS 9.8/10EPSS 29.31%

Last modified

CVE-2023-20032 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 29.31% chance of exploitation in the next 30 days.

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/"].

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
29.31%

97.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoSecure Endpoint< 1.20.2
CiscoSecure Endpoint< 1.21.1
CiscoSecure Endpoint< 7.5.9
CiscoSecure Endpoint>= 8.0.1.21160, < 8.1.5
CiscoSecure Endpoint Private Cloud< 3.6.0
CiscoWeb Security Appliance< 12.5.6
CiscoWeb Security Appliance>= 14.0.0, < 14.0.4-005
CiscoWeb Security Appliance>= 14.5.0, < 14.5.1-013
CiscoWeb Security Appliance>= 15.0.0, < 15.0.0-254
ClamavClamav<= 0.103.7
ClamavClamav>= 0.104.0, <= 0.105.1
ClamavClamav1.0.0
StormshieldStormshield Network Security>= 3.0.0, < 3.7.35
StormshieldStormshield Network Security>= 3.8.0, < 3.11.23
StormshieldStormshield Network Security>= 4.3.0, < 4.3.17
StormshieldStormshield Network Security>= 4.4.0, < 4.6.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-20032?
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/"].
How severe is CVE-2023-20032?
CVE-2023-20032 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 29.31% probability of exploitation in the next 30 days.
How do I fix CVE-2023-20032?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-20032?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST