Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

IKEv1 vulnerability on ASA 5520, can I use IKEv2

Hi, I just ran a vulnerability scan against the outside interface of our Cisco 5520 ASA. An d it returned a IKEv1 vulnerability (see below). Id IKEv2 out?

THREAT:

Cisco Internet Key Exchange (IKE) is exposed to a denial of service issue. This issue affects devices implementing IKE Version 1, and is due to resource exhaustion when handling a high rate of IKE requests. An attack of 10 packets per second at 122 bytes each is sufficient to cause denial of service conditions.

Cisco is tracking these issues with the following Bug IDs:

* CSCse70811 for Cisco IOS software

* CSCse89808 for Cisco VPN 3000 Concentrators

* CSCsb51032 for Cisco PIX firewalls

IMPACT:

A successful attack may lead to denial of service to legitimate users.

SOLUTION:

Cisco has information on a mitigation technique only for Cisco IOS software affected by this issue. Refer to Cisco Security Response 70810 for further details.

COMPLIANCE:

Not Applicable

RESULTS:

Detected service isakmp and os Cisco Catalyst / Cisco PIX 7.x / Cisco ASA Firewall / Juniper

Networks Application Acceleration Platform DX

4 REPLIES
Cisco Employee

Re: IKEv1 vulnerability on ASA 5520, can I use IKEv2

IKEv2 support is not available at this time.

Best Regards,

-pete

New Member

Re: IKEv1 vulnerability on ASA 5520, can I use IKEv2

What is the current status of IKEv2 support?

Cisco Employee

Re: IKEv1 vulnerability on ASA 5520, can I use IKEv2

There is a large amount of detail regarding this "vulnerability" at our PSIRT pages:

http://www.cisco.com/warp/public/707/cisco-sr-20060726-ike.shtml

Re: IKEv1 vulnerability on ASA 5520, can I use IKEv2

Please note that IKEv2 is supported on the Cisco ASA Firewalls starting from software v8.4, please see the following link:

https://supportforums.cisco.com/community/netpro/security/vpn/blog/2011/02/08/asa-84-ipsec-vpn--whats-new

http://www.cisco.com/en/US/docs/security/asa/asa84/configuration/guide/vpn_site2site.html#wp1042828

Please rate if helpful

Regards

Farrukh

1302
Views
0
Helpful
4
Replies