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Category:   OS (Microsoft)  >   Windows DLL (Any) Vendors:   Microsoft
Microsoft Windows TS WebProxy Component Directory Traversal Flaw Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1031524
SecurityTracker URL:  http://securitytracker.com/id/1031524
CVE Reference:   CVE-2015-0016   (Links to External Site)
Date:  Jan 13 2015
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2003 SP2, Vista SP2, 2008 SP2, 7 SP1, 2008 R2 SP1, 8, 8.1, 2012, 2012 R2, RT, RT 8.1; and prior service packs
Description:   A vulnerability was reported in the Microsoft Windows TS WebProxy component. A local user can obtain elevated privileges on the target system.

Windows does not properly sanitize file paths. A local user, or a remote user that can exploit a separate vulnerability in Internet Explorer, can cause code to be executed at the medium integrity level (i.e., permissions of the target user).

The CLSID of the vulnerable component is: B43A0C1E-B63F-4691-B68F-CD807A45DA01

This vulnerability is being actively exploited.

Threat Intel of Symantec reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   The vendor has issued the following fixes:

Windows Vista Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?familyid=8B8638B4-39F9-46F5-B9E1-B379783BA862

Windows Vista x64 Edition Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?familyid=533A99CA-675B-49B3-B262-31D21AF5ABBF

Windows 7 for 32-bit Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=38FFFC8B-AD0D-442B-B11A-586802F9E7D9

Windows 7 for 32-bit Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=4281F207-5005-4F49-AAE3-E88EBE944140

Windows 7 for 32-bit Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=7EEF1C29-F2FC-434E-A7A6-929BBD70C5AE

Windows 7 for x64-based Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=E1757205-9A29-4E47-9072-0A30964A4662

Windows 7 for x64-based Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=9F3EABF6-404E-4FF1-BE03-FFCD172DE877

Windows 7 for x64-based Systems Service Pack 1:

http://www.microsoft.com/downloads/details.aspx?familyid=14673699-7C76-45BC-88ED-278B8DD96882

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

http://www.microsoft.com/downloads/details.aspx?familyid=5E8A333D-ADFB-43CC-BA4E-0E6919AD0DF2

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

http://www.microsoft.com/downloads/details.aspx?familyid=028FBAFC-5C27-4BFD-8984-DBC134694DE2

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

http://www.microsoft.com/downloads/details.aspx?familyid=39936B9C-7CAB-4C58-9EA8-B7BEC9142F10

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

http://www.microsoft.com/downloads/details.aspx?familyid=A4134225-E2AB-4EC7-9A57-52A837B34E5F

Windows 8 for 32-bit Systems:

http://www.microsoft.com/downloads/details.aspx?familyid=7F9E5745-891C-47BD-BD8C-53FCB3C04A6A

Windows 8 for x64-based Systems:

http://www.microsoft.com/downloads/details.aspx?familyid=CFCE6FDD-0FFA-4529-BABC-827A8C17FF67

Windows 8.1 for 32-bit Systems:

http://www.microsoft.com/downloads/details.aspx?familyid=9A5C4CBB-AAC0-49B4-9394-D68A30E33B62

Windows 8.1 for x64-based Systems:

http://www.microsoft.com/downloads/details.aspx?familyid=712E3362-9875-4E6A-89E3-482AE0401F22

Windows Server 2012:

http://www.microsoft.com/downloads/details.aspx?familyid=B639A8DD-EC3A-4D7C-9394-C67392D3A9F2

Windows Server 2012 R2:

http://www.microsoft.com/downloads/details.aspx?familyid=E88D6D1D-46E0-4C1B-BB6D-657D26398BFD

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

http://www.microsoft.com/downloads/details.aspx?familyid=5E8A333D-ADFB-43CC-BA4E-0E6919AD0DF2

Windows Server 2012:

http://www.microsoft.com/downloads/details.aspx?familyid=B639A8DD-EC3A-4D7C-9394-C67392D3A9F2

Windows Server 2012 R2:

http://www.microsoft.com/downloads/details.aspx?familyid=E88D6D1D-46E0-4C1B-BB6D-657D26398BFD

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-004

Vendor URL:  technet.microsoft.com/library/security/ms15-004 (Links to External Site)
Cause:   Input validation error

Message History:   None.


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