[ GLSA 200509-13 ] Clam AntiVirus: Multiple vulnerabilities

[Thierry Carrez <koon () gentoo org>]

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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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