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TITLE:
Firefox Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA16043

VERIFY ADVISORY:
http://secunia.com/advisories/16043/

CRITICAL:
Highly critical

IMPACT:
Security Bypass, Cross Site Scripting, System access

WHERE:
>From remote

SOFTWARE:
Mozilla Firefox 0.x
http://secunia.com/product/3256/
Mozilla Firefox 1.x
http://secunia.com/product/4227/

DESCRIPTION:
Multiple vulnerabilities have been reported in Firefox, which can be
exploited by malicious people to bypass certain security
restrictions, conduct cross-site scripting attacks, and compromise a
user's system.

1) An error where untrusted events generated by web content are
delivered to the browser user interface has various impacts.

This is related to vulnerability #1 in:
SA14938

2) Scripts in XBL controls can be executed even when JavaScript has
been disabled.

3) The image URL is not properly verified before being used with the
"Set As Wallpaper" option. This can be exploited to execute arbitrary
script code by tricking a user into setting an image with a specially
crafted "javascript:" URL as the wallpaper.

Successful exploitation allows execution of arbitrary code.

NOTE: This vulnerability only affects versions 1.0.3 and 1.0.4.

4) An error, where the callback function of the
"InstallTrigger.install()" function is not properly cleared before
navigating to a new site, can be exploited to execute arbitrary
script code in a user's browser session in context of an arbitrary
site.

Successful exploitation requires that the malicious web site has been
added to the install whitelist.

5) An error in the handling of "data:" URIs originating from the
sidebar can be exploited to execute arbitrary script code in a user's
browser session in context of an arbitrary site.

6) An input validation error in the handling of unexpected JavaScript
objects passed to the "InstallVersion.compareTo()" function may be
exploited to execute arbitrary code.

7) External applications can open "javascript:" URIs in the browser,
which is executed in context of the previous opened URL. This can be
exploited to execute arbitrary script code in a user's browser
session in context of an arbitrary site or execute arbitrary script
code with escalated privileges via an external application (e.g.
Flash or QuickTime).

8) An error in the handling of DOM node names with different
namespaces can be exploited to execute arbitrary script code with
escalated privileges via a specially crafted XHTML document.

Successful exploitation allows execution of arbitrary code.

9) An error caused due to insecure cloning of base objects can be
exploited to execute arbitrary script code with escalated privileges.

SOLUTION:
Update to version 1.0.5.
http://www.mozilla.org/products/firefox/

PROVIDED AND/OR DISCOVERED BY:
1) Omar Khan, Jochen, shutdown and Matthew Mastracci
2) moz_bug_r_a4
3) Michael Krax
4) Matthew Mastracci
5) Kohei Yoshino
6) shutdown
7) Michael Krax
8) moz_bug_r_a4
9) moz_bug_r_a4 and shutdown

ORIGINAL ADVISORY:
1) http://www.mozilla.org/security/announce/mfsa2005-45.html
2) http://www.mozilla.org/security/announce/mfsa2005-46.html
3) http://www.mozilla.org/security/announce/mfsa2005-47.html
4) http://www.mozilla.org/security/announce/mfsa2005-48.html
5) http://www.mozilla.org/security/announce/mfsa2005-49.html
6) http://www.mozilla.org/security/announce/mfsa2005-50.html
7) http://www.mozilla.org/security/announce/mfsa2005-53.html
8) http://www.mozilla.org/security/announce/mfsa2005-55.html
9) http://www.mozilla.org/security/announce/mfsa2005-56.html

OTHER REFERENCES:
SA14938:
http://secunia.com/advisories/14938/

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About:
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vulnerabilities.

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