[ GLSA 200503-31 ] Mozilla Firefox: Multiple vulnerabilities

[GLSA]

Gentoo Linux Security Advisory

Title: Mozilla Firefox: Multiple vulnerabilities (GLSA 200503-31)
Severity: normal
Exploitable: remote
Date: March 25, 2005
Bug(s): #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: www-client/mozilla-firefox
Vulnerable: < 1.0.2
Unaffected: >= 1.0.2
Architectures: All supported architectures

Package: www-client/mozilla-firefox-bin
Vulnerable: < 1.0.2
Unaffected: >= 1.0.2
Architectures: 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: