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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Microsoft Windows Bugs Let Remote Users Bypass Security, Remote Authenticated Users Execute Arbitrary Code, and Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1034985
SecurityTracker URL:  http://securitytracker.com/id/1034985
CVE Reference:   CVE-2016-0040, CVE-2016-0041, CVE-2016-0042, CVE-2016-0044, CVE-2016-0049   (Links to External Site)
Updated:  Feb 10 2016
Original Entry Date:  Feb 10 2016
Impact:   Denial of service via network, Execution of arbitrary code via network, Root access via local system, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Vista SP2, 2008 SP2, 7 SP1, 2008 R2 SP1, 8.1, 2012, 2012 R2, RT 8.1, 10; and prior service packs
Description:   Multiple vulnerabilities were reported in Microsoft Windows. A local user can gain elevated privileges. A remote user can bypass authentication. A remote authenticated user can execute arbitrary code on the target system.

A local user can run a specially crafted program to trigger a memory object handling flaw and execute arbitrary code with kernel-level privileges [CVE-2016-0040].

A remote authenticated user can create a specially crafted dynamic link library (DLL) file and then run a specially crafted program on the target system to execute arbitrary code with elevated privileges [CVE-2016-0041, CVE-2016-0042].

A remote authenticated user can send a specially-crafted network packet to the target SyncShareSvc service to trigger an input validation flaw in the Microsoft Sync Framework to cause the target service to stop responding [CVE-2016-0044].

A remote user can connect the target workstation to a specially crafted Kerberos Key Distribution Center (KDC) and bypass a changed password check to decrypt drives protected by BitLocker [CVE-2016-0049].

Su Yong Kim, Byoungyoung Lee, and Taesoo Kim of SSLab, Georgia Institute of Technology, Meysam Firozi @R00tkitSmm, Greg Linares (via CyberPoint SRT), Yorick Koster of Securify B.V., and Nabeel Ahmed and Tom Gilis of Dimension Data reported these vulnerabilities.

Impact:   A local user can gain elevated privileges on the target system.

A remote user can bypass authentication on the target system.

A remote user can execute arbitrary code on the target system.

A remote authenticated user can cause the target service to stop responding.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor's advisory.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms16-014

Vendor URL:  technet.microsoft.com/library/security/ms16-014 (Links to External Site)
Cause:   Access control error, Authentication error, Input validation error

Message History:   None.


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