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Gentoo Linux Security Advisory GLSA 200503-31
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http://security.gentoo.org/
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Severity: Normal
Title: Mozilla Firefox: Multiple vulnerabilities
Date: March 25, 2005
Bugs: #86148
ID: 200503-31
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Synopsis
========
Mozilla Firefox 1.0.2 fixes new security vulnerabilities, including the
remote execution of arbitrary code through malicious GIF images or
sidebars.
Background
==========
Mozilla Firefox is the popular next-generation browser from the Mozilla
project.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-client/mozilla-firefox < 1.0.2 >= 1.0.2
2 www-client/mozilla-firefox-bin < 1.0.2 >= 1.0.2
-------------------------------------------------------------------
2 affected packages on all of their supported architectures.
-------------------------------------------------------------------
Description
===========
The following vulnerabilities were found and fixed in Mozilla Firefox:
* Mark Dowd from ISS X-Force reported an exploitable heap overrun in
the GIF processing of obsolete Netscape extension 2 (CAN-2005-0399)
* Kohei Yoshino discovered that a page bookmarked as a sidebar could
bypass privileges control (CAN-2005-0402)
* Michael Krax reported a new way to bypass XUL security restrictions
through drag-and-drop of items like scrollbars (CAN-2005-0401)
Impact
======
* The GIF heap overflow could be triggered by a malicious GIF image
that would end up executing arbitrary code with the rights of the
user running Firefox
* By tricking the user into bookmarking a malicious page as a
Sidebar, a remote attacker could potentially execute arbitrary code
with the rights of the user running the browser
* By setting up a malicious website and convincing users to obey very
specific drag-and-drop instructions, attackers may leverage
drag-and-drop features to bypass XUL security restrictions, which
could be used as a stepping stone to exploit other vulnerabilities
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Mozilla Firefox users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-1.0.2"
All Mozilla Firefox binary users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
">=www-client/mozilla-firefox-bin-1.0.2"
References
==========
[ 1 ] CAN-2005-0399
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0399
[ 2 ] CAN-2005-0401
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0401
[ 3 ] CAN-2005-0402
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0402
[ 4 ] Mozilla Security Advisories
http://www.mozilla.org/projects/security/known-vulnerabilities.html
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200503-31.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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