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Category:   Application (Generic)  >   OpenBGPD Vendors:   OpenBSD
OpenBGPD Input Validation Hole in 'bgplg' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1019288
SecurityTracker URL:  http://securitytracker.com/id/1019288
CVE Reference:   CVE-2007-6700   (Links to External Site)
Updated:  Feb 17 2008
Original Entry Date:  Jan 31 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  Exploit Included:  Yes  

Description:   A vulnerability was reported in OpenBGPD's 'bgplg' looking glass. A remote user can conduct cross-site scripting attacks.

The 'bgplg' script does 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 running the OpenBGPD software 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.

Anton Karpov reported this vulnerability.

The original advisory is available at:

http://www.mail-archive.com/misc@openbsd.org/msg49057.html
http://www.toxahost.ru/images/funny/obsd_xss.JPG

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the OpenBGPD software, 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 source code fix (in October 2007), available via CVS.

OpenBSD 4.1 is affected. OpenBSD 4.2 is not vulnerable.

Vendor URL:  www.openbgpd.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  UNIX (OpenBSD)
Underlying OS Comments:  4.1

Message History:   None.


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