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[SA10596] Multiple AV Products bzip2 Processing Denial of Service Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Mon Jan 12 2004 - 05:57:52 CST


TITLE:
Multiple AV Products bzip2 Processing Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA10596

VERIFY ADVISORY:
http://www.secunia.com/advisories/10596/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
From remote

SOFTWARE:
Trendmicro Interscan VirusWall 3.x
Kaspersky Anti-Virus for Linux 5.x
McAfee VirusScan 4.x

DESCRIPTION:
Dr. Peter Bieringer has reported a vulnerability in various AV (Anti
Virus) products, which can be exploited by malicious people to cause
a DoS (Denial of Service).

The vulnerability is caused due to missing limits in the
decompression engine when checking bzip2 files. This can be exploited
via overly large files to make an affected product consume large
amounts of disk space and CPU resources.

The vulnerability has been reported in the following products:
* Kaspersky Anti-Virus for Linux 5.0.1.0 (probably all versions since
4.5)
* Trend Micro InterScan VirusWall 3.8 Build 1130
* McAfee Virus Scan for Linux 4.16.0

Other versions and products may also be affected.

SOLUTION:
Filter bzip2 files.

PROVIDED AND/OR DISCOVERED BY:
Dr. Peter Bieringer

ORIGINAL ADVISORY:
http://www.aerasec.de/security/advisories/txt/bzip2bomb-antivirusengines.txt

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