Debian DLA-2355-1 : bind9 security update

high Nessus Plugin ID 140054

Synopsis

The remote Debian host is missing a security update.

Description

Two issues have been found in bind9, an Internet Domain Name Server.

CVE-2020-8622

Crafted responses to TSIG-signed requests could lead to an assertion failure, causing the server to exit. This could be done by malicious server operators or guessing attackers.

CVE-2020-8623

An assertions failure, causing the server to exit, can be exploited by a query for an RSA signed zone.

For Debian 9 stretch, these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u7.

We recommend that you upgrade your bind9 packages.

For the detailed security status of bind9 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bind9

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/2020/08/msg00053.html

https://packages.debian.org/source/stretch/bind9

https://security-tracker.debian.org/tracker/source-package/bind9

Plugin Details

Severity: High

ID: 140054

File Name: debian_DLA-2355.nasl

Version: 1.4

Type: local

Agent: unix

Published: 8/31/2020

Updated: 6/3/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC: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: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, p-cpe:/a:debian:debian_linux:bind9-doc, p-cpe:/a:debian:debian_linux:bind9-host, p-cpe:/a:debian:debian_linux:bind9utils, p-cpe:/a:debian:debian_linux:dnsutils, p-cpe:/a:debian:debian_linux:host, p-cpe:/a:debian:debian_linux:libbind-dev, p-cpe:/a:debian:debian_linux:libbind-export-dev, p-cpe:/a:debian:debian_linux:libbind9-140, p-cpe:/a:debian:debian_linux:libdns-export162, p-cpe:/a:debian:debian_linux:libdns-export162-udeb, p-cpe:/a:debian:debian_linux:libdns162, p-cpe:/a:debian:debian_linux:libirs-export141, p-cpe:/a:debian:debian_linux:libirs-export141-udeb, p-cpe:/a:debian:debian_linux:libirs141, p-cpe:/a:debian:debian_linux:libisc-export160, p-cpe:/a:debian:debian_linux:libisc-export160-udeb, p-cpe:/a:debian:debian_linux:libisc160, p-cpe:/a:debian:debian_linux:libisccc-export140, p-cpe:/a:debian:debian_linux:libisccc-export140-udeb, p-cpe:/a:debian:debian_linux:libisccc140, p-cpe:/a:debian:debian_linux:libisccfg-export140, p-cpe:/a:debian:debian_linux:libisccfg-export140-udeb, p-cpe:/a:debian:debian_linux:libisccfg140, p-cpe:/a:debian:debian_linux:liblwres141, p-cpe:/a:debian:debian_linux:lwresd, cpe:/o:debian:debian_linux:9.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/29/2020

Vulnerability Publication Date: 8/21/2020

Reference Information

CVE: CVE-2020-8622, CVE-2020-8623

IAVA: 2020-A-0385-S