Mozilla Firefox, Mozilla Suite: Multiple vulnerabilities — GLSA 200504-18

New Mozilla Firefox and Mozilla Suite releases fix new security vulnerabilities, including memory disclosure and various ways of executing JavaScript code with elevated privileges.

Affected packages

Package	www-client/mozilla-firefox on all architectures
Affected versions	< 1.0.3
Unaffected versions	>= 1.0.3

Package	www-client/mozilla-firefox-bin on all architectures
Affected versions	< 1.0.3
Unaffected versions	>= 1.0.3

Package	www-client/mozilla on all architectures
Affected versions	< 1.7.7
Unaffected versions	>= 1.7.7

Package	www-client/mozilla-bin on all architectures
Affected versions	< 1.7.7
Unaffected versions	>= 1.7.7

Background

The Mozilla Suite is a popular all-in-one web browser that includes a mail and news reader. Mozilla Firefox is the next-generation browser from the Mozilla project.

Description

The following vulnerabilities were found and fixed in the Mozilla Suite and Mozilla Firefox:

Vladimir V. Perepelitsa reported a memory disclosure bug in JavaScript's regular expression string replacement when using an anonymous function as the replacement argument (CAN-2005-0989).
moz_bug_r_a4 discovered that Chrome UI code was overly trusting DOM nodes from the content window, allowing privilege escalation via DOM property overrides.
Michael Krax reported a possibility to run JavaScript code with elevated privileges through the use of javascript: favicons.
Michael Krax also discovered that malicious Search plugins could run JavaScript in the context of the displayed page or stealthily replace existing search plugins.
shutdown discovered a technique to pollute the global scope of a window in a way that persists from page to page.
Doron Rosenberg discovered a possibility to run JavaScript with elevated privileges when the user asks to "Show" a blocked popup that contains a JavaScript URL.
Finally, Georgi Guninski reported missing Install object instance checks in the native implementations of XPInstall-related JavaScript objects.

The following Firefox-specific vulnerabilities have also been discovered:

Kohei Yoshino discovered a new way to abuse the sidebar panel to execute JavaScript with elevated privileges.
Omar Khan reported that the Plugin Finder Service can be tricked to open javascript: URLs with elevated privileges.

Impact

The various JavaScript execution with elevated privileges issues can be exploited by a remote attacker to install malicious code or steal data. The memory disclosure issue can be used to reveal potentially sensitive information. Finally, the cache pollution issue and search plugin abuse can be leveraged in cross-site-scripting attacks.

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-1.0.3"

All Mozilla Firefox binary users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-client/mozilla-firefox-bin-1.0.3"

All Mozilla Suite users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-client/mozilla-1.7.7"

All Mozilla Suite binary users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-client/mozilla-bin-1.7.7"

References

Release date
April 19, 2005

Latest revision
May 22, 2006: 02

Severity
normal

Exploitable
remote

Bugzilla entries

89303
89305