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Category:   Application (Directory)  >   Microsoft Active Directory Vendors:   Microsoft
Microsoft Active Directory Lets Remote Users Bypass Security Restrictions on the Target System
SecurityTracker Alert ID:  1038243
SecurityTracker URL:  http://securitytracker.com/id/1038243
CVE Reference:   CVE-2017-0159   (Links to External Site)
Date:  Apr 12 2017
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Microsoft Active Directory. A remote user can bypass security controls on the target system.

A remote user can bypass account lockout protection controls for Extranet client requests and conduct brute-force password guessing attacks.

Impact:   A remote user can bypass security controls on the target system.
Solution:   The vendor has issued a fix, available at:

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015217
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015550
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015583

A restart is required.

The vendor advisory is available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0159

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0159 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2012), Windows (2016), Windows (10)
Underlying OS Comments:  2012 R2, 2016, 10 Version 1607, 10 Version 1703

Message History:   None.


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