Vigil@nce - VMWare Tools: privilege elevation via tpfc.dll
September 2012 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
A local attacker can create a malicious DLL, and use VMWare Tools, in order to obtain administration privileges.
Impacted products: ESX, VMware Player, VMware Workstation
Creation date: 06/09/2012
DESCRIPTION OF THE VULNERABILITY
VMWare Tools are for example used to configure the display, or printing features.
The Windows printer configuration is done through ThinPrint tools. However, these tools load the library tpfc.dll, which does not exist on the system.
A local attacker can therefore create a malicious DLL with this name, and use VMWare Tools, in order to obtain administration privileges.
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