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Gentoo Linux Security Advisory                           GLSA 200501-46
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: ClamAV: Multiple issues
      Date: January 31, 2005
      Bugs: #78656, #79194
        ID: 200501-46

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Synopsis
=======
ClamAV contains two vulnerabilities that could lead to Denial of
Service and evasion of virus scanning.

Background
=========
ClamAV is an antivirus toolkit. It includes a multi-threaded daemon and
a command line scanner.

Affected packages
================
    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  app-antivirus/clamav       <= 0.80                        >= 0.81

Description
==========
ClamAV fails to properly scan ZIP files with special headers(CAN-2005-0133) and base64 encoded images in URLs.

Impact
=====
By sending a base64 encoded image file in a URL an attacker could evade
virus scanning. By sending a specially-crafted ZIP file an attacker
could cause a Denial of Service by crashing the clamd daemon.

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-0.81"

References
=========
  [ 1 ] CAN-2005-0133
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0133
  [ 2 ] ClamAV Release Announcement
          [ 3 ] Secunia SA13900
        https://www.flexera.com/products/software-vulnerability-research/secunia-research

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

  https://security.gentoo.org/glsa/200501-46

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
https://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.

https://creativecommons.org/licenses/by-sa/2.0/