Debian DSA-5235-1 : bind9 - security update

medium Nessus Plugin ID 165329

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Synopsis

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

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5235 advisory.

Several vulnerabilities were discovered in BIND, a DNS server implementation. CVE-2022-2795 Yehuda Afek, Anat Bremler-Barr and Shani Stajnrod discovered that a flaw in the resolver code can cause named to spend excessive amounts of time on processing large delegations, significantly degrade resolver performance and result in denial of service. CVE-2022-3080 Maksym Odinintsev discovered that the resolver can crash when stale cache and stale answers are enabled with a zero stale-answer-timeout. A remote attacker can take advantage of this flaw to cause a denial of service (daemon crash) via specially crafted queries to the resolver. CVE-2022-38177 It was discovered that the DNSSEC verification code for the ECDSA algorithm is susceptible to a memory leak flaw. A remote attacker can take advantage of this flaw to cause BIND to consume resources, resulting in a denial of service. CVE-2022-38178 It was discovered that the DNSSEC verification code for the EdDSA algorithm is susceptible to a memory leak flaw. A remote attacker can take advantage of this flaw to cause BIND to consume resources, resulting in a denial of service. For the stable distribution (bullseye), these problems have been fixed in version 1:9.16.33-1~deb11u1. 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

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 the stable distribution (bullseye), these problems have been fixed in version 1

Plugin Details

Severity: Medium

ID: 165329

File Name: debian_DSA-5235.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/22/2022

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2022-38178

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 v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS Score Source: CVE-2022-2795

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9utils, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:dnsutils, p-cpe:/a:debian:debian_linux:bind9-host, p-cpe:/a:debian:debian_linux:bind9-dnsutils, p-cpe:/a:debian:debian_linux:bind9, p-cpe:/a:debian:debian_linux:bind9-utils, p-cpe:/a:debian:debian_linux:bind9-libs, p-cpe:/a:debian:debian_linux:bind9-doc, p-cpe:/a:debian:debian_linux:bind9-dev

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/22/2022

Vulnerability Publication Date: 9/21/2022

Reference Information

CVE: CVE-2022-2795, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178

Detections

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