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Secunia Advisory SA16376

Nortel VPN Client Privilege Escalation Vulnerability
Secunia Advisory SA16376
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Release Date 2005-08-11
Last Update 2005-08-19
   
Popularity 7,578 views
Comments 0 comments

Criticality level Less criticalLess critical
Impact Privilege escalation
Where Local system
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
Remediation status Secunia CSI, Secunia PSI
Automated scanning Secunia CSI, Secunia PSI
   
Software:
Nortel Contivity VPN Client
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2005-2579 CVSS available in Customer Area
  

Description
Jeff Peadro has discovered a vulnerability in Nortel VPN Client, which can be exploited by malicious, local users to gain escalated privileges.

The vulnerability is caused due to the program running its GUI with SYSTEM privileges rather than using the privileges of the currently logged on user. This can be exploited to gain SYSTEM privileges by using the certificate or token selection functionality to launch cmd.exe.

Successful exploitation requires that the client has been installed as a system service.

The vulnerability has been confirmed in version 04_65.26 and has also been reported in versions 05_01.030 and 05_01.100. Other versions may also be affected.

Solution
Update to version 5.01_103.

Provided and/or discovered by
Jeff Peadro

Changelog
Further details available in Customer Area

Original Advisory
Nortel:
http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp?level=6&category=29&subcategory=1&subtype=&DocumentOID=346187

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com
Subject: Nortel VPN Client Privilege Escalation Vulnerability
 
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