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Debian dla-4364 : bind9 - security update

high Nessus Plugin ID 272278

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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 dla-4364 advisory.

 ------------------------------------------------------------------------- Debian LTS Advisory DLA-4364-1 [email protected] https://www.debian.org/lts/security/ Andreas Henriksson November 04, 2025 https://wiki.debian.org/LTS
 -------------------------------------------------------------------------

 Package : bind9 Version : 1:9.16.50-1~deb11u4 CVE ID : CVE-2025-8677 CVE-2025-40778 CVE-2025-40780 Debian Bug :

 Brief introduction

 CVE-2025-8677

 Resource exhaustion via malformed DNSKEY handling

 CVE-2025-40778

 Cache poisoning attacks with unsolicited RRs

 CVE-2025-40780

 Cache poisoning due to weak PRNG

 For Debian 11 bullseye, these problems have been fixed in version 1:9.16.50-1~deb11u4.

 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 Attachment:
 signature.asc Description: PGP signature

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.

See Also

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

https://security-tracker.debian.org/tracker/CVE-2025-40778

https://security-tracker.debian.org/tracker/CVE-2025-40780

https://security-tracker.debian.org/tracker/CVE-2025-8677

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

Plugin Details

Severity: High

ID: 272278

File Name: debian_DLA-4364.nasl

Version: 1.1

Type: local

Agent: unix

Published: 11/4/2025

Updated: 11/4/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2025-40780

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/4/2025

Vulnerability Publication Date: 10/22/2025

Reference Information

CVE: CVE-2025-40778, CVE-2025-40780, CVE-2025-8677

IAVA: 2025-A-0800