Cisco Security Advisory - ClamAV DMG File Parsing XML Entity Expansion Vulnerability Affecting Cisco Products: February 2023

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ClamAV DMG File Parsing XML Entity Expansion Vulnerability Affecting Cisco Products: February 2023

On Feb 1, 2023, the following vulnerability in the ClamAV scanning library was disclosed:

A vulnerability in the DMG 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 access sensitive information on an affected device.

This vulnerability is due to enabling XML entity substitution that may result in XML external entity injection. An attacker could exploit this vulnerability by submitting a crafted DMG file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to leak bytes from any file that may be read by the ClamAV scanning process.

For a description of this vulnerability, see the ClamAV blog.

This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-xxe-TcSZduhN

     
         
Security Impact Rating:  Medium
   
   
       
CVE: CVE-2023-20052
Source: ClamAV DMG File Parsing XML Entity Expansion Vulnerability Affecting Cisco Products: February 2023