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Category:   OS (Microsoft)  >   Windows Print Spooler Vendors:   Microsoft
Windows Print Spooler Bugs Let Remote Users Execute Arbitrary Code and Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1036277
SecurityTracker URL:  http://securitytracker.com/id/1036277
CVE Reference:   CVE-2016-3238, CVE-2016-3239   (Links to External Site)
Date:  Jul 12 2016
Impact:   Execution of arbitrary code via network, User 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, 10 Version 1511; and prior service packs
Description:   Two vulnerabilities were reported in Windows Print Spooler. A local user can obtain elevated privileges on the target system. A remote user can execute arbitrary code on the target system.

The Windows Print Spooler service does not properly validate print drivers when installing the driver from a remote server [CVE-2016-3238]. A remote user that can conduct a man-in-the-middle attack or can create a specially crafted printer server on the target network can cause arbitrary code to be executed on the target system.

A local user can run a specially crafted program to exploit a flaw in the Windows Print Spooler service and write an arbitrary file on the target system [CVE-2016-3239]. This can be exploited to execute arbitrary code on the target system.

Nicolas Beauchesne of Vectra Networks and Shanti Lindstrom, Individual, reported these vulnerabilities.

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

A remote user that can conduct a man-in-the-middle attack can execute arbitrary code on the target system.

Solution:   The vendor has issued a fix.

Windows Vista Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=4f32492b-32d6-4011-8e45-d8f669478756

Windows Vista x64 Edition Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=5ce0dc8d-ee92-42b8-9093-503c11b08e4c

Windows Server 2008 for 32-bit Systems Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=de72b4bd-2ba5-4564-9f28-4eb3158aba88

Windows Server 2008 for x64-based Systems Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=2ce4da68-efac-4cf1-9377-71363bb8d908

Windows Server 2008 for Itanium-based Systems Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=2b037d86-959a-46ee-b1e1-907814b4e599

Windows 7 for 32-bit Systems Service Pack 1:

https://www.microsoft.com/downloads/details.aspx?familyid=c268dba8-edfd-4967-ada0-cd088433d1fc

Windows 7 for x64-based Systems Service Pack 1:

https://www.microsoft.com/downloads/details.aspx?familyid=faf59ced-bf3c-4e9d-a9a9-00363b2b8011

Windows Server 2008 R2 for x64-based Systems Service Pack 1:

https://www.microsoft.com/downloads/details.aspx?familyid=6e1eee96-e3ea-45b8-b8c8-aa9866dd8bff

Windows Server 2008 R2 for Itanium-based Systems Service Pack 1:

https://www.microsoft.com/downloads/details.aspx?familyid=60d2eda6-3fe2-4502-938b-e1837477ed4b

Windows 8.1 for 32-bit Systems:

https://www.microsoft.com/downloads/details.aspx?familyid=e510c869-199c-4b03-9f13-33acd7aedbec

Windows 8.1 for x64-based Systems:

https://www.microsoft.com/downloads/details.aspx?familyid=e7febad8-792b-4084-9858-e9a277707bb9

Windows Server 2012:

https://www.microsoft.com/downloads/details.aspx?familyid=0734c375-d31b-4779-870b-1ff42bed53cb

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=b89e295a-5151-49b6-94a9-8fe00d0ebc62

Windows Server 2008 for 32-bit Systems Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=de72b4bd-2ba5-4564-9f28-4eb3158aba88

Windows Server 2008 for x64-based Systems Service Pack 2:

https://www.microsoft.com/downloads/details.aspx?familyid=2ce4da68-efac-4cf1-9377-71363bb8d908

Windows Server 2008 R2 for x64-based Systems Service Pack 1:

https://www.microsoft.com/downloads/details.aspx?familyid=6e1eee96-e3ea-45b8-b8c8-aa9866dd8bff

Windows Server 2012:

https://www.microsoft.com/downloads/details.aspx?familyid=0734c375-d31b-4779-870b-1ff42bed53cb

Windows Server 2012 R2:

https://www.microsoft.com/downloads/details.aspx?familyid=b89e295a-5151-49b6-94a9-8fe00d0ebc62

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms16-087

Vendor URL:  technet.microsoft.com/library/security/ms16-087 (Links to External Site)
Cause:   Access control error, Input validation error

Message History:   None.


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