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Debian DLA-627-1 : pdns security update
high Nessus Plugin ID 93567
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Synopsis
The remote Debian host is missing a security update.Description
Multiple vulnerabilities have been discovered in pdns, an authoritative DNS server. The Common Vulnerabilities and Exposures project identifies the following problems :CVE-2016-5426 / CVE-2016-5427
Florian Heinz and Martin Kluge reported that the PowerDNS Authoritative Server accepts queries with a qname's length larger than 255 bytes and does not properly handle dot inside labels. A remote, unauthenticated attacker can take advantage of these flaws to cause abnormal load on the PowerDNS backend by sending specially crafted DNS queries, potentially leading to a denial of service.
CVE-2016-6172
It was reported that a malicious primary DNS server can crash a secondary PowerDNS server due to improper restriction of zone size limits. This update adds a feature to limit AXFR sizes in response to this flaw.
For Debian 7 'Wheezy', these problems have been fixed in version 3.1-4.1+deb7u2.
We recommend that you upgrade your pdns packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected packages.See Also
https://lists.debian.org/debian-lts-announce/2016/09/msg00020.html
Plugin Details
Severity: High
ID: 93567
File Name: debian_DLA-627.nasl
Version: 2.7
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 9/19/2016
Updated: 1/11/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.1
Temporal Score: 5.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:pdns-backend-geo, p-cpe:/a:debian:debian_linux:pdns-backend-ldap, p-cpe:/a:debian:debian_linux:pdns-backend-lua, p-cpe:/a:debian:debian_linux:pdns-backend-mysql, p-cpe:/a:debian:debian_linux:pdns-backend-pgsql, p-cpe:/a:debian:debian_linux:pdns-backend-pipe, p-cpe:/a:debian:debian_linux:pdns-backend-sqlite, p-cpe:/a:debian:debian_linux:pdns-backend-sqlite3, p-cpe:/a:debian:debian_linux:pdns-server, p-cpe:/a:debian:debian_linux:pdns-server-dbg, cpe:/o:debian:debian_linux:7.0
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 9/18/2016