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

Medium Nessus Plugin ID 60089


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


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.


Update the affected package.

See Also

Plugin Details

Severity: Medium

ID: 60089

File Name: freebsd_pkg_ce82bfebd27611e192c614dae938ec40.nasl

Version: $Revision: 1.4 $

Type: local

Published: 2012/07/23

Modified: 2014/09/18

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:nsd, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2012/07/20

Vulnerability Publication Date: 2012/07/19

Reference Information

CVE: CVE-2012-2978