[NT] Cisco Windows VPN Client Local Privilege Escalation



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Cisco Windows VPN Client Local Privilege Escalation
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SUMMARY

" <http://www.cisco.com/en/US/products/sw/secursw/ps2308/index.html> Cisco
VPN Client allows organizations to establish end-to-end, encrypted VPN
tunnels for secure connectivity for mobile employees or teleworkers. "

A vulnerability in the Cisco VPN client dialer, can be exploited to
elevate user privileges and obtain LocalSystem-equivalent privileges.

DETAILS

Vulnerable Systems:
* Cisco Windows VPN Client version 2.x
* Cisco Windows VPN Client version 3.x
* Cisco Windows VPN Client version 4.0.x
* Cisco Windows VPN Client version 4.6.x
* Cisco Windows VPN Client version 4.7.00.0533
* Cisco Windows VPN Client version 4.8.00.x

Immune Systems:
* Cisco Windows VPN Client version 4.7.x
* Cisco Windows VPN Client version 4.8.01.0300
* Cisco VPN Client for Solaris
* Cisco VPN Client for Linux
* Cisco VPN Client for MacOS X
* Cisco VPN Client for MacOS Classic

A vulnerability in the Cisco VPN Client for Windows Graphical User
Interface (GUI), also known as the "VPN client dialer", can be exploited
to elevate user privileges and obtain LocalSystem-equivalent privileges.
This issue is not related to any known issues in Microsoft Windows itself.

Successful exploitation of the vulnerability may result in a normal user
or attacker gaining full control of the system, evading any controls put
in place by the Windows system administrator.

Vendor Status:
This vulnerability is fixed in version 4.8.01.0300 of the Cisco VPN Client
for Windows, which can be downloaded from the following location:
<http://www.cisco.com/pcgi-bin/tablebuild.pl/windows>
http://www.cisco.com/pcgi-bin/tablebuild.pl/windows


ADDITIONAL INFORMATION

The information has been provided by <mailto:psirt@xxxxxxxxx> Cisco
Systems Product Security Team.
The original article can be found at:
<http://www.cisco.com/warp/public/707/cisco-sa-20060524-vpnclient.shtml>
http://www.cisco.com/warp/public/707/cisco-sa-20060524-vpnclient.shtml



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