eEye Digital Security eEye Digital Security
  • Login to the eEye Business Client Portal
  • Shop for eEye Products
  • Read the eEye Blog
  • Subscribe to eEye RSS Feeds
  • Follow eEye on Twitter
  • Follow eEye of Facebook

Research > Zero-Day Tracker > 20110214

Microsoft Windows Server 2003 AD Pre-Auth Browser Election Remote Heap Overflow

Date Disclosed:

Date Patched:


Affected Software:
Microsoft Windows XP SP3 and prior and Windows Server 2003 SP 2 and prior

Microsoft Windows contains a heap overflow vulnerability in the BrowserWriteErrorLogEntry function when processing Browser Election requests. Successful exploitation could allow execution of arbitrary code with System level privileges.


Code Execution:

Remote Unauthenticated Privilege Escalation.
This remote vulnerability allows an unauthenticated attacker to execute code on the server with System level privileges.

Apply appropriate patch from MS11-019.




  • 2.14.2011 - Public Information Released
  • 4.12.2011 - Vendor Patch Released

Copyright ©1998-2011 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email for permission.

The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.

Next Steps

Free Trial
Test drive an eEye product
On-demand Demo
See an online product tour
One-on-one Demo
Schedule a personalized tour
Compare Products
See side-by-side features
Buy Now
Go to eEye product store
Contact | Site Map | Privacy | Website Feedback | 1.866.339.3732
© 1998 – 2012 eEye Digital Security. All rights reserved.