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Category:   OS (Microsoft)  >   Windows LDAP Vendors:   Microsoft
Windows LDAP Buffer Length Calculation Error Lets Remote Authenticated Users Gain Elevated Privileges
SecurityTracker Alert ID:  1038245
SecurityTracker URL:  http://securitytracker.com/id/1038245
CVE Reference:   CVE-2017-0166   (Links to External Site)
Date:  Apr 12 2017
Impact:   Execution of arbitrary code via local system, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Vista SP2, 7 SP1, 2008 R2 SP1, 2008 SP2, 2012, 2012 R2, 8.1, RT 8.1, 10, 10 Version 1511, 10 Version 1607, 10 Version 1703
Description:   A vulnerability was reported in Windows LDAP. A remote authenticated user can gain elevated privileges.

A remote authenticated user can send specially crafted data to the target Domain Controller to trigger a buffer length calculation error and gain elevated privileges on the target system.

Impact:   A remote authenticated user can gain elevated privileges on the target system.
Solution:   The vendor has issued a fix, available at:

https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015068
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015217
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015219
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015221
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015549
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015550
https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4015551
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-2017-0166

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0166 (Links to External Site)
Cause:   Boundary error

Message History:   None.


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