Windows Kernel Bug in User Mode Scheduler Lets Local Users Gain Elevated Privileges
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SecurityTracker Alert ID: 1027155 |
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SecurityTracker URL: http://securitytracker.com/id/1027155
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CVE Reference:
CVE-2012-0217
(Links to External Site)
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Date: Jun 12 2012
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Impact:
Root access via local system
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): XP SP3, 2003 SP2, 7 SP1 (for x64), 2008 R2 SP1 (for x64); and prior service packs
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Description:
A vulnerability was reported in the Windows Kernel. A local user can obtain elevated privileges on the target system.
A local user can run a specially crafted program to exploit Windows User Mode Scheduler (UMS) to execute arbitrary code on the target system with elevated privileges.
[Editor's note: Xen is also affected.]
Rafal Wojtczuk of Bromium and Jan Beulich of SUSE reported this vulnerability.
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Impact:
A local user can obtain elevated privileges on the target system.
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Solution:
The vendor has issued the following fixes:
Windows XP Service Pack 3:
http://www.microsoft.com/downloads/details.aspx?familyid=0efff733-4c8d-4fce-8de3-28465c6b762b
Windows Server 2003 Service Pack 2:
http://www.microsoft.com/downloads/details.aspx?familyid=855611a1-91ad-4d22-8c1c-fdcd6af4cef0
Windows 7 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=c2b47091-534f-41c3-a229-b5a9ec4b64bb
Windows 7 for x64-based Systems Service Pack 1:
http://www.microsoft.com/downloads/details.aspx?familyid=c2b47091-534f-41c3-a229-b5a9ec4b64bb
Windows Server 2008 R2 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=1696726a-ed04-4c0e-b9b6-3ac4ac775c4c
Windows Server 2008 R2 for x64-based Systems Service Pack 1:
http://www.microsoft.com/downloads/details.aspx?familyid=1696726a-ed04-4c0e-b9b6-3ac4ac775c4c
Windows Server 2008 R2 for x64-based Systems:
http://www.microsoft.com/downloads/details.aspx?familyid=1696726a-ed04-4c0e-b9b6-3ac4ac775c4c
Windows Server 2008 R2 for x64-based Systems Service Pack 1:
http://www.microsoft.com/downloads/details.aspx?familyid=1696726a-ed04-4c0e-b9b6-3ac4ac775c4c
A restart is required.
The Microsoft advisory is available at:
http://technet.microsoft.com/en-us/security/bulletin/ms12-042
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Vendor URL: technet.microsoft.com/en-us/security/bulletin/ms12-042 (Links to External Site)
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Cause:
Access control error
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Underlying OS:
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Message History:
None.
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Source Message Contents
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[Original Message Not Available for Viewing]
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