This host is missing an critical security update according to Microsoft Bulletin MS13-098.

Successful exploitation will allow attackers to execute arbitrary code or cause a denial of service condition. Impact Level: System

Run Windows Update and update the listed hotfixes or download and update mentioned hotfixes in the advisory from the below link, https://technet.microsoft.com/en-us/security/bulletin/ms13-098

Flaw is due to WinVerifyTrust function which does not properly handles the Windows Authenticode signature verification for portable executable(PE) files.

Microsoft Windows XP Service Pack 3 and prior Microsoft Windows XP x64 Edition Service Pack 2 and prior Microsoft Windows 2003 x32/x64 Service Pack 2 and prior Microsoft Windows Vista x32/x64 Service Pack 2 and prior Microsoft Windows Server 2008 x32/x64 Service Pack 2 and prior Microsoft Windows 7 x32/x64 Service Pack 1 and prior Microsoft Windows Server 2008 R2 x64 Service Pack 1 and prior Microsoft Windows 8 x32/x64 Microsoft Windows 8.1 x32/x64 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2

Get the vulnerable file version and check appropriate patch is applied or not.

• http://osvdb.org/100765
• http://secunia.com/advisories/55971
• http://support.microsoft.com/kb/2893294
• https://technet.microsoft.com/en-us/security/bulletin/ms13-098

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Updated on 2015-03-25