#VU96825 Out-of-bounds read in ClamAV - CVE-2024-20505

Vulnerability identifier: #VU96825

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-20505

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ClamAV
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: ClamAV

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the PDF file parser. A remote attacker can pass a specially crafted PDF file to the antivirus, trigger an out-of-bounds read error and crash the antivirus engine.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ClamAV: 0.103 - 0.103.11, 0.104.0 - 0.104.4, 0.105.0 - 0.105.2, 1.0.0 - 1.0.6, 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.2.0 - 1.2.3, 1.3.0 - 1.3.1, 1.4.0

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External links
https://blog.clamav.net/2024/09/clamav-141-132-107-and-010312-security.html
https://github.com/Cisco-Talos/clamav-devel/releases/tag/clamav-1.3.2
https://github.com/Cisco-Talos/clamav-devel/releases/tag/clamav-1.0.7
https://github.com/Cisco-Talos/clamav-devel/releases/tag/clamav-0.103.12
https://github.com/Cisco-Talos/clamav-devel/releases/tag/clamav-1.4.1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.