FreeBSD : BIND,Knot,NSD,PowerDNS -- denial over service via oversized zone transfers (7d08e608-5e95-11e6-b334-002590263bf5)

high Nessus Plugin ID 92832
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 one or more security-related updates.

Description

ISC reports :

DNS protocols were designed with the assumption that a certain amount of trust could be presumed between the operators of primary and secondary servers for a given zone. However, in current practice some organizations have scenarios which require them to accept zone data from sources that are not fully trusted (for example: providers of secondary name service). A party who is allowed to feed data into a zone (e.g. by AXFR, IXFR, or Dynamic DNS updates) can overwhelm the server which is accepting data by intentionally or accidentally exhausting that server's memory.

Solution

Update the affected packages.

See Also

https://kb.isc.org/docs/aa-01390

https://www.openwall.com/lists/oss-security/2016/07/06/4

http://www.nessus.org/u?302429c0

Plugin Details

Severity: High

ID: 92832

File Name: freebsd_pkg_7d08e6085e9511e6b334002590263bf5.nasl

Version: 2.10

Type: local

Published: 8/10/2016

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS v3

Risk Factor: High

Base Score: 8.6

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:bind9-devel, p-cpe:/a:freebsd:freebsd:bind910, p-cpe:/a:freebsd:freebsd:bind911, p-cpe:/a:freebsd:freebsd:bind99, p-cpe:/a:freebsd:freebsd:knot, p-cpe:/a:freebsd:freebsd:knot1, p-cpe:/a:freebsd:freebsd:knot2, p-cpe:/a:freebsd:freebsd:nsd, p-cpe:/a:freebsd:freebsd:powerdns, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 8/10/2016

Vulnerability Publication Date: 7/6/2016

Reference Information

CVE: CVE-2016-6170, CVE-2016-6171, CVE-2016-6172, CVE-2016-6173