Cisco IOS XR Software IPv6 Malformed Packet DoS (cisco-sa-20140611-ipv6)

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote device is missing a vendor-supplied security patch.

Description :

According to its self-reported version, the version of Cisco IOS XR
running on the remote host is affected by a denial of service
vulnerability due to the improper handling of IPv6 packets. A remote,
unauthenticated attacker can cause the device to lock up by rapidly
sending specially crafted IPv6 packets.

Note that this issue only affects Trident-based line cards on Cisco
ASR 9000 series routers. Also, if IPv6 is not enabled, the device can
still be exploited by a host on an adjacent network.

See also :

http://www.nessus.org/u?46f32f69
http://tools.cisco.com/security/center/viewAlert.x?alertId=33902

Solution :

Apply the relevant patch referenced in Cisco Security Advisory
cisco-sa-20140611-ipv6.

Risk factor :

High / CVSS Base Score : 7.1
(CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.2
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: CISCO

Nessus Plugin ID: 76312 ()

Bugtraq ID: 68005

CVE ID: CVE-2014-2176