This script is (C) 2010-2014 Tenable Network Security, Inc.
The remote device is missing a vendor-supplied security patch.
Multiple Cisco products are vulnerable to DNS cache poisoning attacks
due to their use of insufficiently randomized DNS transaction IDs and
UDP source ports in the DNS queries that they produce, which may allow
an attacker to more easily forge DNS answers that can poison DNS
To exploit this vulnerability an attacker must be able to cause a
vulnerable DNS server to perform recursive DNS queries. Therefore, DNS
servers that are only authoritative, or servers where recursion is not
allowed, are not affected.
Cisco has released free software updates that address these
See also :
Apply the relevant patch referenced in Cisco Security Advisory
Risk factor :
Medium / CVSS Base Score : 6.4
CVSS Temporal Score : 5.3
Public Exploit Available : true