GLSA 200503-31: Mozilla Firefox: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	Mozilla Firefox: Multiple vulnerabilities
Date:	03/25/2005
Bugs:	#86148
ID:	200503-31

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	Architecture(s)
www-client/mozilla-firefox	< 1.0.2	>= 1.0.2	All supported architectures
www-client/mozilla-firefox-bin	< 1.0.2	>= 1.0.2	All 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

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 https://bugs.gentoo.org.