Debian DLA-1843-1 : pdns security update

high Nessus Plugin ID 126481

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Synopsis

The remote Debian host is missing a security update.

Description

Two vulnerabilities have been discovered in pdns, an authoritative DNS server which may result in denial of service via malformed zone records and excessive NOTIFY packets in a master/slave setup.

CVE-2019-10162

An issue has been found in PowerDNS Authoritative Server allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. The issue is due to the fact that the Authoritative Server will exit when it runs into a parsing error while looking up the NS/A/AAAA records it is about to use for an outgoing notify.

CVE-2019-10163

An issue has been found in PowerDNS Authoritative Server allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.

For Debian 8 'Jessie', these problems have been fixed in version 3.4.1-4+deb8u10.

We recommend that you upgrade your pdns packages.

For the detailed security status of pdns please refer to its security tracker page at: https://security-tracker.debian.org/tracker/pdns

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.

Plugin Details

Severity: High

ID: 126481

File Name: debian_DLA-1843.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/5/2019

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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-lmdb, p-cpe:/a:debian:debian_linux:pdns-backend-lua, p-cpe:/a:debian:debian_linux:pdns-backend-mydns, 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-remote, 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:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/3/2019

Vulnerability Publication Date: 7/30/2019

Reference Information

CVE: CVE-2019-10162, CVE-2019-10163

Detections

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