Vulnerability identifier: #VU2994

Vulnerability risk: High

CVSSv3.1: 9.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2012-0165

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Windows
Operating systems & Components / Operating system
Windows Server
Operating systems & Components / Operating system

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to improper validation of EMF images. A remote attacker can create a specially crafted EMF image file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Mitigation
Install update from vendor's website:

Windows Vista Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=e11d8738-379a-4dfe-b21c-495041d9523a
Windows Vista x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=838f588b-2a0d-4dae-b54d-782e6985fd83
Windows Server 2008 for 32-bit Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=360adbed-a451-44ed-8675-ca5624ef1cf3
Windows Server 2008 for x64-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=4e6d29e1-17fc-4670-9e69-988c040f06e2
Windows Server 2008 for Itanium-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=c65df271-8b7d-46d3-81b3-87c0ad05e8d0
Windows Server 2008 for 32-bit Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=47a0df29-f42e-463b-9c15-a93385ff8705
Windows Server 2008 for x64-based Systems Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=4e6d29e1-17fc-4670-9e69-988c040f06e2
Microsoft Office 2003 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=0abbf09c-8828-4524-8b38-e34faefa2ae4
Microsoft Office 2007 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=b9a27671-883a-4ab7-b86f-99730a9af729
Microsoft Office 2007 Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=b9a27671-883a-4ab7-b86f-99730a9af729
Microsoft Office 2010 (32-bit editions):
https://www.microsoft.com/downloads/details.aspx?familyid=c355d598-ff4d-4cac-afa9-2de3236a7d71
Microsoft Office 2010 Service Pack 1 (32-bit editions):
https://www.microsoft.com/downloads/details.aspx?familyid=c355d598-ff4d-4cac-afa9-2de3236a7d71
Microsoft Office 2010 (64-bit editions):
https://www.microsoft.com/downloads/details.aspx?familyid=91619bcc-9d5d-4011-a185-c405758782be
Microsoft Office 2010 Service Pack 1 (64-bit editions):
https://www.microsoft.com/downloads/details.aspx?familyid=91619bcc-9d5d-4011-a185-c405758782be

Vulnerable software versions

Windows: Vista

Windows Server: 2008

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External links
http://technet.microsoft.com/en-us/library/security/ms12-034

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.