Forum Thread: Cisco VPN Client Privilege Escalation Vulnerabilities

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Cisco VPN Client Privilege Escalation Vulnerabilities

Secunia Cisco VPN Client Privilege Escalation Vulnerabilities
Secunia Official 30th Mar, 2011 17:57
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Some vulnerabilities have been reported in Cisco VPN Client, which can be exploited by malicious, local users to gain escalated privileges.

1) An error when using a VPN profile configured to use the Microsoft Dial-Up Networking Interface can be exploited to run arbitrary commands with the privileges of the LocalSystem account by enabling the "Start Before Logon" feature.

The vulnerability is reported in versions prior to 4.8.02.0010.

2) Incorrect permissions are set for cpvnd.exe during the Cisco VPN Client installation. This can be exploited by interactive users to run arbitary commands with the privileges of the LocalSystem account by replacing cvpnd.exe with an arbitrary file.

The vulnerability is reported in versions prior to 5.0.01.0600 and 64-bit version 5.0.7.0290.

kurfuer

RE: Cisco VPN Client Privilege Escalation Vulnerabilities
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kurfuer RE: Cisco VPN Client Privilege Escalation Vulnerabilities
Member 30th Mar, 2011 18:00
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Last edited on 30th Mar, 2011 18:00
Secunia tells me: "The version detected of Cisco VPN Client 5.x was 5.0.07.0410 while the latest version including one or more security fixes is 5.0.7.0440."
But the 0440 release is available only as 64bit version. I'm using a 32bit version, and the latest available release for 32bit is 0410.
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Anthony Wells RE: Cisco VPN Client Privilege Escalation Vulnerabilities
Expert Contributor 30th Mar, 2011 19:23
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Last edited on 30th Mar, 2011 19:26
Your problem has already been raised in this thread :-

http://secunia.com/community/forum/thread/show/797...

As it is rather more a PSI detection problem , you would be best to follow the other thread

You will also need to take it up with Cisco as well .

Take care

Anthony

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It always seems impossible until its done.
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