Cisco ClamAV up to 1.4.0 ClamD Service access control

Summaryinfo

A vulnerability was found in Cisco ClamAV and classified as critical. The impacted element is an unknown function of the component ClamD Service. Such manipulation leads to access control. This vulnerability is uniquely identified as CVE-2024-20506. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in Cisco ClamAV and classified as critical. Affected by this issue is an unknown code of the component ClamD Service. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is integrity, and availability. CVE summarizes:

A vulnerability in the ClamD service 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 authenticated, local attacker to corrupt critical system files. The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.

The advisory is available at blog.clamav.net. This vulnerability is handled as CVE-2024-20506 since 11/08/2023. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/04/2024). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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