Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

BID:5619

Info

Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

Bugtraq ID: 5619
Class: Failure to Handle Exceptional Conditions
CVE:
Remote: Yes
Local: No
Published: Sep 03 2002 12:00AM
Updated: Sep 03 2002 12:00AM
Credit: Vulnerability announced in a Cisco Security Advisory.
Vulnerable: Cisco VPN 3002 Hardware Client
Cisco VPN 3000 Concentrator 3.5.4
Cisco VPN 3000 Concentrator 3.5.3
Cisco VPN 3000 Concentrator 3.5.2
Cisco VPN 3000 Concentrator 3.5.1
Cisco VPN 3000 Concentrator 3.5 (Rel)
Cisco VPN 3000 Concentrator 3.1.4
Cisco VPN 3000 Concentrator 3.1.2
Cisco VPN 3000 Concentrator 3.1.1
Cisco VPN 3000 Concentrator 3.1 (Rel)
Cisco VPN 3000 Concentrator 3.1
Cisco VPN 3000 Concentrator 3.0.4
Cisco VPN 3000 Concentrator 3.0.3 (B)
Cisco VPN 3000 Concentrator 3.0.3 (A)
Cisco VPN 3000 Concentrator 3.0
Cisco VPN 3000 Concentrator 3.0
Cisco VPN 3000 Concentrator 2.5.2 (F)
Cisco VPN 3000 Concentrator 2.5.2 (D)
Cisco VPN 3000 Concentrator 2.5.2 (C)
Cisco VPN 3000 Concentrator 2.5.2 (B)
Cisco VPN 3000 Concentrator 2.5.2 (A)
Cisco VPN 3000 Concentrator 2.0
Not Vulnerable: Cisco VPN 3000 Concentrator 3.6.1
Cisco VPN 3000 Concentrator 3.6
Cisco VPN 3000 Concentrator 3.5.5

Discussion

Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

There are a number of circumstances where maliciously constructed Internet Security Association and Key Management Protocol (ISAKMP) packets may cause an affected Cisco VPN 3000 Concentrator device to reload. Denial of network/VPN service may be possible.

Exploit / POC

Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

Solution:
Cisco has released fixes which address this issue. For Cisco VPN 3002 Hardware Client, this issue is addressed in versions 3.5.5 and 3.6.1 of the firmware.


Cisco VPN 3000 Concentrator 3.5 (Rel)

Cisco VPN 3000 Concentrator 3.5.3

Cisco VPN 3000 Concentrator 3.5.4

References

Cisco VPN 3000 Series Concentrator ISAKMP Denial of Service Vulnerabilities

References:

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