McAfee Anti-Virus Zip Archive Virus Detection Bypass Vulnerability - Secunia Advisories - Vulnerability Intelligence

McAfee Anti-Virus Zip Archive Virus Detection Bypass Vulnerability
Secunia Advisory:	SA12876	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2004-10-20
Last Update:	2005-10-13
Popularity:	12,953 views

Critical:	Not critical
Impact:	Security Bypass
Where:	From remote
Solution Status:	Vendor Patch

OS:	McAfee WebShield Appliances

Software:	McAfee GroupShield for Exchange 2000 5.x McAfee GroupShield for Exchange 4.x McAfee GroupShield for Exchange 5.x McAfee GroupShield for Exchange 6.x McAfee GroupShield for Lotus Domino on AIX 5.x McAfee GroupShield for Lotus Domino on Windows 5.x McAfee Netshield for Netware 4.x McAfee Netshield for NT 4.x McAfee VirusScan 4.x McAfee VirusScan Enterprise 7.x McAfee VirusScan Enterprise 8.x McAfee VirusScan for Mac (Virex) 7.x McAfee VirusScan Professional 7.x McAfee VirusScan ThinClient McAfee VirusScan Wireless McAfee WebShield SMTP 4.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2004-0932

Description: A weakness has been reported in McAfee Anti-Virus Engine, which can be exploited by malware to bypass certain scanning functionality. The weakness is caused due to an error when parsing .zip archive headers and can be exploited via a specially crafted .zip archive where the uncompressed size of the archived file has been modified within the local and global headers. Successful exploitation causes malware in a specially crafted .zip archive to pass the scanning functionality undetected. NOTE: This is not a critical issue on client systems, as the malware still is detected upon execution by the McAfee on-access scanner. Solution: Update to McAfee Anti-Virus Engine DATS driver version 4398 or later. Home (Retail) Users: http://download.mcafee.com/uk/updates/updates.asp Business (Enterprise) Users: http://www.mcafeesecurity.com/uk/downloads/updates/dat.asp?id=1 Provided and/or discovered by: Discovered by anonymous person and reported via iDEFENSE. Changelog: 2005-10-13: Updated "Description" and rating sections. Original Advisory: http://www.idefense.com/application/poi/display?id=153&type=vulnerabilities

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