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Category:   Application (Multimedia)  >   Adobe Flash Player Vendors:   Adobe Systems Incorporated
Adobe Flash Content May Permit Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1019141
SecurityTracker URL:  http://securitytracker.com/id/1019141
CVE Reference:   CVE-2007-6637   (Links to External Site)
Updated:  Jan 4 2008
Original Entry Date:  Dec 24 2007
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Vendor Confirmed:  Yes  

Description:   Adobe Flash content on numerous web sites contain input validation vulnerabilities. A remote user can conduct cross-site scripting attacks. [Editor's note: This is not a vulnerability in Flash player.]

Some Adobe Flash content ('.swf' files) may not properly filter HTML code from user-supplied input before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site hosting the Adobe Flash content and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the 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.

Pre-generated SWF files distributed with Adobe Dreamweaver CS3 and Adobe Acrobat Connect are affected. Other SWF files may also be affected.

These vulnerabilities were reported in a pending book by Rich Cannings of Google and Himanshu Dwivedi and Zane Lackey of iSEC Partners.

[Editor's note: This is not a vulnerability in Flash Player, per se. Because the issues may numerous web sites, the issue is reported here so that content creators can analyze their code for input validation flaws.]

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site hosting the Adobe Flash content, 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:   No vendor solution was available at the time of this entry.

Adobe is working on improving their Flash content generators to provide additional input validation features to protect generated Flash content from cross-site scripting attacks. When the update is available, vulnerable Flash content will need to be regenerated.

Adobe also plans to issue a revised Flash Player ["in early 2008"] to provide client-side protection for sites hosting poorly implemented SWF files against cross-site scripting attacks.

The Adobe advisory is available at:

http://www.adobe.com/support/security/advisories/apsa07-06.html

Vendor URL:  www.adobe.com/support/security/advisories/apsa07-06.html (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (macOS/OS X), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Jan 16 2008 (Adobe Issues Fix for Dreamweaver) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Adobe has issued a fix for Dreamweaver.
Jan 17 2008 (Adobe Issues Fix for Adobe Connect) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Adobe has issued a fix for Adobe Connect Enterprise Server 6.
Jan 17 2008 (Adobe Issues Fix for Adobe Contribute) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Adobe has issued a fix for Adobe Contribute 4 and CS3.
Apr 9 2008 (Adobe Issues Fix) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Adobe has issued a fix.
Apr 9 2008 (Red Hat Issues Fix) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Red Hat has released a fix for Red Hat Enterprise Linux 3, 4, and 5.
Jun 3 2008 (Sun Issues Fix) Adobe Flash Content May Permit Cross-Site Scripting Attacks
Sun has issued a fix for Solaris 10.



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