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Date: Thu, 27 Aug 2015 00:09:22 GMT
Subject: UAC Bypass Vulnerability on "Windows 7" in Windows Script Host

UAC Bypass Vulnerability in Windows Script Host.

The Windows Script Host executables suffer from a vulnerability due to a missing embedded manifest. Using another exploit, the combination of "wusa.exe" and "makecab.exe" files can be copied to the Windows folder. Copies of a manifest and the script host allow to execute the copied script host and bypass UAC warning messages in case the UAC settings are default.

Both ZDI and Microsoft are aware of this issue, expectedly ZDI didn't accept the admission because it's not a remote vulnerability. Surprisingly Microsoft didn't accept the vulnerability because "UAC isn't considered a security boundary".

Only Windows 7 is vulnerable, Windows 8 has a embedded manifest and Windows 10 is untested.


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