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[ GLSA 200506-23 ] Clam AntiVirus: Denial of Service vulnerability
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GLSA
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Joined: 12 May 2004
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PostPosted: Mon Jun 27, 2005 4:42 am    Post subject: [ GLSA 200506-23 ] Clam AntiVirus: Denial of Service vulnera Reply with quote

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:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.86.1"


References

Clam AntiVirus Release Notes
CVE-2005-2056


Last edited by GLSA on Sat Jun 10, 2006 4:16 am; edited 4 times in total
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