Debian DLA-2807-1 : bind9 - LTS security update

high Nessus Plugin ID 154882

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Synopsis

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

Description

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2807 advisory.

- deny-answer-aliases is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to experience an assertion failure in name.c. Affects BIND 9.7.0->9.8.8, 9.9.0->9.9.13, 9.10.0->9.10.8, 9.11.0->9.11.4, 9.12.0->9.12.2, 9.13.0->9.13.2. (CVE-2018-5740)

- In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing. (CVE-2021-25219)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the bind9 packages.

For Debian 9 stretch, these problems have been fixed in version 1

Plugin Details

Severity: High

ID: 154882

File Name: debian_DLA-2807.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 11/3/2021

Updated: 9/27/2022

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 Score Source: CVE-2021-25219

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

CVSS Score Source: CVE-2018-5740

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:libdns162, p-cpe:/a:debian:debian_linux:libirs-export141, p-cpe:/a:debian:debian_linux:libirs141, p-cpe:/a:debian:debian_linux:libisc-export160, p-cpe:/a:debian:debian_linux:libisc160, p-cpe:/a:debian:debian_linux:libisccc-export140, p-cpe:/a:debian:debian_linux:libisccc140, p-cpe:/a:debian:debian_linux:libisccfg-export140, 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: 11/2/2021

Vulnerability Publication Date: 8/8/2018

Reference Information

CVE: CVE-2018-5740, CVE-2021-25219

IAVA: 2018-A-0255-S, 2018-A-0303-S, 2021-A-0525-S

Detections

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