FreeBSD : BIND -- Dynamic update message remote DoS (83725c91-7c7e-11de-9672-00e0815b8da8)

This script is Copyright (C) 2009-2013 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

When named(8) receives a specially crafted dynamic update message an
internal assertion check is triggered which causes named(8) to exit.

To trigger the problem, the dynamic update message must contains a
record of type 'ANY' and at least one resource record set (RRset) for
this fully qualified domain name (FQDN) must exist on the server.
Impact : An attacker which can send DNS requests to a nameserver can
cause it to exit, thus creating a Denial of Service situation.
Workaround : No generally applicable workaround is available, but some
firewalls may be able to prevent nsupdate DNS packets from reaching
the nameserver.

NOTE WELL: Merely configuring named(8) to ignore dynamic updates is
NOT sufficient to protect it from this vulnerability.

See also :

https://www.isc.org/node/474
http://www.nessus.org/u?06982e78

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P)
Public Exploit Available : true

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 40461 (freebsd_pkg_83725c917c7e11de967200e0815b8da8.nasl)

Bugtraq ID:

CVE ID: CVE-2009-0696

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