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Category:   Application (Web Browser)  >   Mozilla Firefox Vendors:   Mozilla.org
Mozilla Firefox Character Processing Bugs Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1020920
SecurityTracker URL:  http://securitytracker.com/id/1020920
CVE Reference:   CVE-2008-4065, CVE-2008-4066   (Links to External Site)
Date:  Sep 24 2008
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.0.0.17, 3.0 prior to 3.0.2
Description:   Two vulnerabilities were reported in Mozilla Firefox. A remote user can conduct cross-site scripting attacks.

The software strips certain BOM characters from JavaScript code and ignores certain HTML-escaped low surrogate characters. A remote user can create specially crafted HTML that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser.

Dave Reed and Gareth Heyes reported these vulnerabilities.

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the accessed site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   The vendor has issued a fixed version (2.0.0.17, 3.0.2).

The vendor's advisory is available at:

http://www.mozilla.org/security/announce/2008/mfsa2008-43.html

Vendor URL:  www.mozilla.org/security/announce/2008/mfsa2008-43.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 24 2008 (Red Hat Issues Fix) Mozilla Firefox Character Processing Bugs Permit Cross-Site Scripting Attacks
Red Hat has released a fix for Red Hat Enterprise Linux 4 and 5.
Oct 2 2008 (Red Hat Issues Fix for Thunderbird) Mozilla Firefox Character Processing Bugs Permit Cross-Site Scripting Attacks
Red Hat has released a fix for Thunderbird for Red Hat Enterprise Linux 4 and 5.



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