Cisco ClamAV up to 1.4.0 PDF Parser out-of-bounds

Summaryinfo

A vulnerability has been found in Cisco ClamAV and classified as problematic. The affected element is an unknown function of the component PDF Parser. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2024-20505. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Cisco ClamAV and classified as problematic. Affected by this vulnerability is an unknown part of the component PDF Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability in the PDF parsing module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to an out of bounds read. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. An exploit could allow the attacker to terminate the scanning process.

The advisory is shared at blog.clamav.net. This vulnerability is known as CVE-2024-20505 since 11/08/2023. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/04/2024).

The vulnerability scanner Nessus provides a plugin with the ID 208113 (Amazon Linux 2 : clamav (ALAS-2024-2644)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (208113). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Anti-Malware Software

Vendor

• Cisco

Name

• ClamAV

Version

• 0.103.0
• 0.103.1
• 0.103.2
• 0.103.3
• 0.103.4
• 0.103.5
• 0.103.6
• 0.103.7
• 0.103.8
• 0.103.9
• 0.103.10
• 0.103.11
• 0.104.x
• 0.105.x
• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.0.5
• 1.0.6
• 1.2.x
• 1.3.2
• 1.4.0

License

• free

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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