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TITLE:
Mozilla Firefox Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA14938

VERIFY ADVISORY:
http://secunia.com/advisories/14938/

CRITICAL:
Highly critical

IMPACT:
Security Bypass, Cross Site Scripting, System access

WHERE:
>From remote

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

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

1) An input validation error when processing the "PLUGINSPAGE"
attribute of the "EMBED" tag for non-installed plugins can be
exploited to inject arbitrary JavaScript code in the "chrome" via a
specially crafted "PLUGINSPAGE" attribute.

Successful exploitation may allow execution of arbitrary code, but
requires that the user clicks the "Manual Install" button.

2) An error, where blocked popups opened through the GUI incorrectly
runs with "chrome" privileges, can be exploited to execute arbitrary
code via a specially crafted "javascript:" URI.

Successful exploitation requires that the user opens a blocked
popup.

3) An error, where the global scope of a window or tab in certain
situations is not properly cleaned before navigating to a new web
site, can be exploited to execute arbitrary script code in a user's
browser session in context of the new site.

4) An error, where the URL of a "favicons" icon for a web site is not
verified before being changed via JavaScript, can be exploited to
execute arbitrary script code with escalated privileges via a
specially crafted "javascript:" URI.

Successful exploitation may allow execution of arbitrary code.

5) An error, where the action URL of a search plugin is not verified
before being used to perform a search, can be exploited to execute
arbitrary script code in a user's browser session in context of the
current web site, but requires that the user is tricked into
installing a search plugin with a specially crafted "javascript:"
URI.

Successful exploitation may allow execution of arbitrary code, if a
search is performed when the current web site runs with escalated
privileges (e.g. "about:plugins" and "about:config").

6) An error in the way links are opened in the sidebar using the
"_search" target can be exploited to execute arbitrary script code in
a user's browser session in context of an arbitrary website via a
specially crafted "javascript:" URI.

Successful exploitation may allow execution of arbitrary code.

7) Some input validation errors when handling parameters of invalid
types passed to certain "InstallTrigger" and "XPInstall" related
objects via JavaScript may be exploited to execute arbitrary code.

8) Some errors, where certain privileged UI code does not properly
validate DOM nodes from the content window, can be exploited to
execute arbitrary code.

Successful exploitation may require some user interaction.

SOLUTION:
Update to version 1.0.3.
http://www.mozilla.org/products/firefox/

PROVIDED AND/OR DISCOVERED BY:
1) Omar Khan
2) Doron Rosenberg
3) shutdown
4) Michael Krax
5) Michael Krax
6) Kohei Yoshino
7) Georgi Guninski
8) moz_bug_r_a4

ORIGINAL ADVISORY:
1) http://www.mozilla.org/security/announce/mfsa2005-34.html
2) http://www.mozilla.org/security/announce/mfsa2005-35.html
3) http://www.mozilla.org/security/announce/mfsa2005-36.html
4) http://www.mozilla.org/security/announce/mfsa2005-37.html
5) http://www.mozilla.org/security/announce/mfsa2005-38.html
6) http://www.mozilla.org/security/announce/mfsa2005-39.html
7) http://www.mozilla.org/security/announce/mfsa2005-40.html
8) http://www.mozilla.org/security/announce/mfsa2005-41.html

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