Secunia Security Advisory - A vulnerability has been reported in Cisco VPN 3000 Concentrator, which can be exploited by malicious people to cause a DoS (Denial of Service).
4568d050e5cfefb96e48d76ba5d84c33e6158ef076bf79f0b804ec3582976dab
TITLE:
Cisco VPN 3000 Concentrator HTTP Packet Denial of Service
SECUNIA ADVISORY ID:
SA18629
VERIFY ADVISORY:
http://secunia.com/advisories/18629/
CRITICAL:
Moderately critical
IMPACT:
DoS
WHERE:
>From remote
OPERATING SYSTEM:
Cisco VPN 3000 Concentrator
http://secunia.com/product/90/
DESCRIPTION:
A vulnerability has been reported in Cisco VPN 3000 Concentrator,
which can be exploited by malicious people to cause a DoS (Denial of
Service).
The vulnerability is caused due to an error when processing HTTP
packets. This can be exploited to cause the network device to reload
or drop established user connections by sending a specially crafted
HTTP packet to the concentrator.
Successful exploitation requires that the HTTP service is enabled
(default setting).
The vulnerability has been reported in software versions 4.7.0
through 4.7.2.A (including version 4.7REL). Software versions prior
to 4.7.x are not affected.
SOLUTION:
Update to software version 4.7.2.B or later.
http://www.cisco.com/pcgi-bin/tablebuild.pl/vpn3000-3des
Disable the HTTP service.
PROVIDED AND/OR DISCOVERED BY:
Discussed at the Schmoocon security conference.
ORIGINAL ADVISORY:
http://www.cisco.com/warp/public/707/cisco-sa-20060126-vpn.shtml
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