Adobe Flash Content May Permit Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1019141 |
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SecurityTracker URL: http://securitytracker.com/id/1019141
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CVE Reference:
CVE-2007-6637
(Links to External Site)
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Updated: Jan 4 2008
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Original Entry Date: Dec 24 2007
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Impact:
Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Vendor Confirmed: Yes
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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.]
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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.
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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
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Vendor URL: www.adobe.com/support/security/advisories/apsa07-06.html (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Any), UNIX (OS X), Windows (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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[Original Message Not Available for Viewing]
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