Cisco IPSec VPN Implementation Group Name Enumeration

01/12/2010

Gavin Jones of NGS Secure has discovered a vulnerability in (Cisco) Cisco VPN Concentrator, Cisco PIX and Cisco Adaptive Security Appliance.

Versions affected include:

-Cisco ASA 5500 Series Adaptive Security Appliances
-Cisco PIX 500 Series Security Appliances
-Cisco VPN 3000 Series Concentrators (models 3005, 3015, 3020, 3030, 3060, and 3080)

Cisco has released a patch that addresses the issue. The announcement of this patch can be found here:

http://www.cisco.com/en/US/products/products_security_response09186a0080b5992c.html

Patches can be downloaded from Cisco's online support portal at:

http://www.cisco.com

NGS Secure is going to withhold details of this flaw for three months. Full details will be published on 01/03/2011. This three month window will allow users the time needed to apply the patch before the details are released to the general public. This reflects the NGS Secure approach to responsible disclosure.

NGS Secure Research
http://www.ngssecure.com