[ GLSA 200506-23 ] Clam AntiVirus: Denial of Service vulnerability

[GLSA]

Gentoo Linux Security Advisory

Title: Clam AntiVirus: Denial of Service vulnerability (GLSA 200506-23)
Severity: normal
Exploitable: remote
Date: June 27, 2005
Updated: May 22, 2006
Bug(s): #96960
ID: 200506-23

Synopsis

Clam AntiVirus is vulnerable to a Denial of Service attack when processing certain Quantum archives.

Background

Clam AntiVirus is a GPL anti-virus toolkit, designed for integration with mail servers to perform attachment scanning. Clam AntiVirus also provides a command line scanner and a tool for fetching updates of the virus database.

Affected Packages

Package: app-antivirus/clamav
Vulnerable: < 0.86.1
Unaffected: >= 0.86.1
Architectures: All supported architectures


Description

Andrew Toller and Stefan Kanthak discovered that a flaw in libmspack's Quantum archive decompressor renders Clam AntiVirus vulnerable to a Denial of Service attack.

Impact

A remote attacker could exploit this vulnerability to cause a Denial of Service by sending a specially crafted Quantum archive to the server.

Workaround

There is no known workaround at this time.

Resolution

All Clam AntiVirus users should upgrade to the latest available version: