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TUCoPS :: Security App Flaws :: v7-1584.htm

Clam AntiVirus: Integer overflows



Clam AntiVirus: Integer overflows
Clam AntiVirus: Integer overflows



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Gentoo Linux Security Advisory                           GLSA 200507-25
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http://security.gentoo.org/ 
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  Severity: High
     Title: Clam AntiVirus: Integer overflows
      Date: July 26, 2005
      Bugs: #100178
        ID: 200507-25

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Synopsis
=======
Clam AntiVirus is vulnerable to integer overflows when handling several
file formats, potentially resulting in the execution of arbitrary code.

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      < 0.86.2                      >= 0.86.2

Description
==========
Neel Mehta and Alex Wheeler discovered that Clam AntiVirus is
vulnerable to integer overflows when handling the TNEF, CHM and FSG
file formats.

Impact
=====
By sending a specially-crafted file an attacker could execute arbitrary
code with the permissions of the user running Clam AntiVirus.

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-0.86.2"

References
=========
  [ 1 ] BugTraq Announcement
http://www.securityfocus.com/archive/1/406377/30/ 
  [ 2 ] Clam AntiVirus: Release Notes
http://sourceforge.net/project/shownotes.php?release_id=344514 

Availability
===========
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200507-25.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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