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

Medium Nessus Plugin ID 40461


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


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.


Update the affected packages.

See Also

Plugin Details

Severity: Medium

ID: 40461

File Name: freebsd_pkg_83725c917c7e11de967200e0815b8da8.nasl

Version: $Revision: 1.15 $

Type: local

Published: 2009/08/03

Modified: 2013/06/22

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:bind9, p-cpe:/a:freebsd:freebsd:bind9-sdb-ldap, p-cpe:/a:freebsd:freebsd:bind9-sdb-postgresql, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2009/08/01

Vulnerability Publication Date: 2009/07/28

Exploitable With

Core Impact

Reference Information

CVE: CVE-2009-0696

CERT: 725188

FreeBSD: SA-09:12.bind

CWE: 16