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Category:   Application (Multimedia)  >   Adobe Flash Player Vendors:   Adobe Systems Incorporated
Adobe Flash Player setClipboard() Function Lets Remote Users Deny Service
SecurityTracker Alert ID:  1020724
SecurityTracker URL:  http://securitytracker.com/id/1020724
CVE Reference:   CVE-2008-3873   (Links to External Site)
Updated:  Oct 15 2008
Original Entry Date:  Aug 20 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 9.0.124.0 and prior versions
Description:   A vulnerability was reported in Adobe Flash Player. A remote user can cause limited denial of service conditions.

A remote user can create a specially crafted SWF file that, when viewed by the target user, will invoke the setClipboard() cause arbitrary text to be repeatedly copied to the clipboard, preventing the clipboard from functioning properly. The target user's browser must be closed to return the system to normal operations.

A demonstration exploit is available at:

http://raffon.net/research/flash/cb/test.html

[Editor's note: The System.setClipboard() function is a feature of Flash and not a bug. However, the feature can be abused to cause limited denial of service conditions. This vulnerability is being actively exploited to place SPAM URLs on the victim's clipboard.]

Impact:   A remote user can prevent the clipboard from functioning properly on the target user's system.
Solution:   The vendor has issued a fix (10.0.12.36).

The vendor plans to issue a fix for version 9.x in November 2008.

The vendor's advisory is available at:

http://www.adobe.com/support/security/bulletins/apsb08-18.html

Vendor URL:  www.adobe.com/support/security/bulletins/apsb08-18.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (macOS/OS X), UNIX (Solaris - SunOS), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 28 2008 (Red Hat Issues Fix) Adobe Flash Player setClipboard() Function Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 5.
Nov 12 2008 (Red Hat Issues Fix) Adobe Flash Player setClipboard() Function Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux 3 and 4 Extras.



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