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TUCoPS :: Security App Flaws :: b06-1980.htm

ClamAV: Buffer overflow in Freshclam



ClamAV: Buffer overflow in Freshclam
ClamAV: Buffer overflow in Freshclam



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Gentoo Linux Security Advisory                           GLSA 200605-03
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: ClamAV: Buffer overflow in Freshclam
      Date: May 02, 2006
      Bugs: #131791
        ID: 200605-03

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Synopsis
=======
Freshclam is vulnerable to a buffer overflow that could lead to
execution of arbitrary code.

Background
=========
ClamAV is a GPL virus scanner. Freshclam is a utility to download virus
signature updates.

Affected packages
================
    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav      < 0.88.2                      >= 0.88.2

Description
==========
Ulf Harnhammar and an anonymous German researcher discovered that
Freshclam fails to check the size of the header data returned by a
webserver.

Impact
=====
By enticing a user to connect to a malicious webserver an attacker
could cause the execution of arbitrary code.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All ClamAV users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.88.2"

References
=========
  [ 1 ] CVE-2006-1989
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1989 

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

http://security.gentoo.org/glsa/glsa-200605-03.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 2006 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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