FreeBSD : nsd -- Denial of Service (17f369dc-d7e7-11e1-90a2-000c299b62e1)

high Nessus Plugin ID 60150
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

Tom Hendrikx reports :

It is possible to crash (SIGSEGV) a NSD child server process by sending it a DNS packet from any host on the internet and the per zone stats build option is enabled. 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.

Solution

Update the affected package.

See Also

https://www.nlnetlabs.nl/404/

http://www.nessus.org/u?c842063b

Plugin Details

Severity: High

ID: 60150

File Name: freebsd_pkg_17f369dcd7e711e190a2000c299b62e1.nasl

Version: 1.7

Type: local

Published: 7/30/2012

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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: 7/27/2012

Vulnerability Publication Date: 7/27/2012

Reference Information

CVE: CVE-2012-2979