CVE-2023-20032CriticalCVSS 9.8

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/"].

Published
March 1, 2023
Last Modified
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🔗 CVE IDs covered (1)

CVE-2023-20032 →

📋 Description

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability? One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.

🎯 Affected products1

  • cbl2 clamav 0.105.2-1 on CBL Mariner 2.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 0.105.2-1

🔗 References (2)