GLSA 200612-15 McAfee VirusScan: Insecure DT_RPATH
Posted on: 12/14/2006 08:20 AM

A new security update has been released for Gentoo Linux - McAfee VirusScan: Insecure DT_RPATH. Here the announcement:

Gentoo Linux Security Advisory GLSA 200612-15
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http://security.gentoo.org/
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Severity: High
Title: McAfee VirusScan: Insecure DT_RPATH
Date: December 14, 2006
Bugs: #156989
ID: 200612-15

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Synopsis
========

McAfee VirusScan for Linux is distributed with an insecure DT_RPATH,
potentially allowing a remote attacker to execute arbitrary code.

Background
==========

McAfee VirusScan for Linux is a commercial antivirus solution for
Linux.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-antivirus/vlnx lt;= 4510e Vulnerable!
-------------------------------------------------------------------
NOTE: Certain packages are still vulnerable. Users should migrate
to another package if one is available or wait for the
existing packages to be marked stable by their
architecture maintainers.

Description
===========

Jakub Moc of Gentoo Linux discovered that McAfee VirusScan was
distributed with an insecure DT_RPATH which included the current
working directory, rather than $ORIGIN which was probably intended.

Impact
======

An attacker could entice a VirusScan user to scan an arbitrary file and
execute arbitrary code with the privileges of the VirusScan user by
tricking the dynamic loader into loading an untrusted ELF DSO. An
automated system, such as a mail scanner, may be subverted to execute
arbitrary code with the privileges of the process invoking VirusScan.

Workaround
==========

Do not scan files or execute VirusScan from an untrusted working
directory.

Resolution
==========

As VirusScan verifies that it has not been modified before executing,
it is not possible to correct the DT_RPATH. Furthermore, this would
violate the license that VirusScan is distributed under. For this
reason, the package has been masked in Portage pending the resolution
of this issue.

# emerge --ask --verbose --unmerge "app-antivirus/vlnx"

References
==========

[ 1 ] CVE-2006-6474
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6474

Availability
============

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

http://security.gentoo.org/glsa/glsa-200612-15.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/2.5



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