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.

CVE-2021-25219 Kishore Kumar Kothapalli discovered that the lame server cache in BIND, a DNS server implementation, can be abused by an attacker to significantly degrade resolver performance, resulting in denial of service (large delays for responses for client queries and DNS timeouts on client hosts).
CVE-2018-5740 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. For Debian 9 stretch, these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u10. 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 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues 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: 1.6

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 11/3/2021

Updated: 1/24/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous 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:libisc-export160, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:bind9-doc, p-cpe:/a:debian:debian_linux:libirs-export141, p-cpe:/a:debian:debian_linux:libisc160, p-cpe:/a:debian:debian_linux:libirs141, p-cpe:/a:debian:debian_linux:libisccc-export140, p-cpe:/a:debian:debian_linux:libdns-export162, p-cpe:/a:debian:debian_linux:libbind-dev, p-cpe:/a:debian:debian_linux:libbind-export-dev, p-cpe:/a:debian:debian_linux:libisccfg140, p-cpe:/a:debian:debian_linux:host, p-cpe:/a:debian:debian_linux:libisccc140, p-cpe:/a:debian:debian_linux:libbind9-140, p-cpe:/a:debian:debian_linux:dnsutils, p-cpe:/a:debian:debian_linux:bind9-host, p-cpe:/a:debian:debian_linux:liblwres141, p-cpe:/a:debian:debian_linux:libdns162, p-cpe:/a:debian:debian_linux:lwresd, p-cpe:/a:debian:debian_linux:bind9utils, p-cpe:/a:debian:debian_linux:libisccfg-export140, p-cpe:/a:debian:debian_linux:bind9

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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