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Vigil@nce - Windows XP, 2003: privilege escalation via NDPROXY

December 2013 by Vigil@nce

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

SYNTHESIS OF THE VULNERABILITY

A local attacker can use NDPROXY on Windows XP/2003, in order to
escalate his privileges.

Impacted products: Windows 2003, Windows XP

Severity: 2/4

Creation date: 28/11/2013

DESCRIPTION OF THE VULNERABILITY

The NDProxy.sys driver interfaces TAPI (Telephony Application
Programming Interfaces) services with the NDISWAN/CoNDIS driver
(WAN miniport, call managers, miniport call managers). The driver
runs with kernel privileges.

However, on Windows XP/2003, this driver does not correctly check
its parameters, which leads to code execution with kernel
privileges.

A local attacker can therefore use NDPROXY on Windows XP/2003, in
order to escalate his privileges.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Windows-XP-2003-privilege-escalation-via-NDPROXY-13838


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