Vulnerability identifier: #VU1256

Vulnerability risk: Critical

CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2008-2249

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Windows
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 integer overflow when processing malformed WMF image file. By persuading the victim to open a specially crafted WMF image file containing a malformed header, a remote attacker can cause 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.

Note: according to reports this vulnerability was being actively exploited before Microsoft issued security patch.

Mitigation
Install update from vendor's website:

Microsoft Windows 2000 Service Pack 4:
https://www.microsoft.com/downloads/details.aspx?familyid=3B775FB1-1077-455D-AF4A-4CCB5237974F
Windows XP Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=2151FBBA-C464-4D1E-82D4-5B096E82BED0
Windows XP Service Pack 3:
https://www.microsoft.com/downloads/details.aspx?familyid=2151FBBA-C464-4D1E-82D4-5B096E82BED0
Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=2247F6A5-AA33-4C68-9EA8-A63488D126D3
Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=0C396796-0929-4CD2-99E8-3C0F7075A89E
Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2:
https://www.microsoft.com/downloads/details.aspx?familyid=6D5C7D2F-1A82-4CDF-B3F2-B2C2390C6A64
Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems:
https://www.microsoft.com/downloads/details.aspx?familyid=1EDB62B4-3D0F-4891-B4B3-8F8BC4E7BDFE
Windows Vista and Windows Vista Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=CDDF9CF6-BDEB-4429-823A-879387A428D7
Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1:
https://www.microsoft.com/downloads/details.aspx?familyid=73DC3775-B6F0-40F1-BD36-6B5FB80EB2FA
Windows Server 2008 for 32-bit Systems:
https://www.microsoft.com/downloads/details.aspx?familyid=BBED9E8B-E75E-44EF-BA1D-FD6F852C1F67
Windows Server 2008 for x64-based Systems:
https://www.microsoft.com/downloads/details.aspx?familyid=48AECF4C-1296-490D-BA37-A28E3EC19BD6
Windows Server 2008 for Itanium-based Systems:
https://www.microsoft.com/downloads/details.aspx?familyid=9BFE15CD-02FF-45CF-85C8-5FF1E6C1A871

Vulnerable software versions

Windows: 2000, XP

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External links
http://technet.microsoft.com/en-us/library/security/ms08-071.aspx
http://fe-ddis.dk/cfcs/CFCSDocuments/Zeroday.pdf

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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?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.