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Vigil@nce - Windows: privilege escalation via On-Screen Keyboard

July 2014 by Vigil@nce

This bulletin was written by Vigil@nce : http://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

A local attacker can use the On-Screen Keyboard of Windows, in
order to escalate his privileges.

Impacted products: Windows 2008, Microsoft Windows 2012, Windows
7, Windows 8, Windows RT, Windows Vista

Severity: 2/4

Creation date: 08/07/2014

DESCRIPTION OF THE VULNERABILITY

The Windows Integrity mechanism associates a trust level to a
program.

The On-Screen Keyboard displays a keyboard on the screen.

However, a process with a low Integrity can be used with the
On-Screen Keyboard, to execute a program with privileges of the
current user. Technical details are unknown.

A local attacker can therefore use the On-Screen Keyboard of
Windows, in order to escalate his privileges.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Windows-privilege-escalation-via-On-Screen-Keyboard-15008


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