FreeBSD : dns/nsd -- DoS vulnerability from non-standard DNS packet (ce82bfeb-d276-11e1-92c6-14dae938ec40)

This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

Marek Vavrusa and Lubos Slovak report :

It is possible to crash (SIGSEGV) a NSD child server process by
sending it a non-standard DNS packet from any host on the internet. A
crashed child process will automatically be restarted by the parent
process, but an attacker may keep the NSD server occupied restarting
child processes by sending it a stream of such packets effectively
preventing the NSD server to serve.

See also :

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=170024
http://www.nlnetlabs.nl/downloads/CVE-2012-2978.txt
http://www.nessus.org/u?ba82b70f

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 60089 ()

Bugtraq ID:

CVE ID: CVE-2012-2978

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