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Gentoo Linux Security Advisory GLSA 200509-13
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http://security.gentoo.org/
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Severity: High
Title: Clam AntiVirus: Multiple vulnerabilities
Date: September 19, 2005
Bugs: #106279
ID: 200509-13
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Synopsis
=======
Clam AntiVirus is subject to vulnerabilities ranging from Denial of
Service to execution of arbitrary code when handling compressed
executables.
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 / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-antivirus/clamav < 0.87 >= 0.87
Description
==========
Clam AntiVirus is vulnerable to a buffer overflow in "libclamav/upx.c"
when processing malformed UPX-packed executables. It can also be sent
into an infinite loop in "libclamav/fsg.c" when processing
specially-crafted FSG-packed executables.
Impact
=====
By sending a specially-crafted file an attacker could execute arbitrary
code with the permissions of the user running Clam AntiVirus, or cause
a Denial of Service.
Workaround
=========
There is no known workaround at this time.
Resolution
=========
All Clam AntiVirus users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.87"
References
=========
[ 1 ] CAN-2005-2919
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2919
[ 2 ] CAN-2005-2920
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2920
[ 3 ] Clam AntiVirus: Release Notes
http://sourceforge.net/project/shownotes.php?release_id=356974
Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200509-13.xml
Concerns?
========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.
License
======
Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.0
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