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

High Nessus Plugin ID 92832


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


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.


Update the affected packages.

See Also

Plugin Details

Severity: High

ID: 92832

File Name: freebsd_pkg_7d08e6085e9511e6b334002590263bf5.nasl

Version: $Revision: 2.6 $

Type: local

Published: 2016/08/10

Modified: 2017/04/25

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.8

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


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: 2016/08/10

Vulnerability Publication Date: 2016/07/06

Reference Information

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