Debian dsa-6367 : dnsdist - security update

medium Nessus Plugin ID 322938

Synopsis

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

Description

The remote Debian 13 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-6367 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6367-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 25, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : dnsdist CVE ID : CVE-2026-40011 CVE-2026-40208 CVE-2026-40209 CVE-2026-40210 CVE-2026-40211 CVE-2026-42004 CVE-2026-42005

Multiple security vulnerabilities were discovered in the dnsdist DNS loadbalancer, which could result in denial of service, information disclosure or bypass of security rules.

For the stable distribution (trixie), these problems have been fixed in version 1.9.15-0+deb13u1.

We recommend that you upgrade your dnsdist packages.

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

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

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 dnsdist packages.

Plugin Details

Severity: Medium

ID: 322938

File Name: debian_DSA-6367.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 6/26/2026

Updated: 6/26/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-40210

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:dnsdist, cpe:/o:debian:debian_linux:13.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/25/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-40011, CVE-2026-40208, CVE-2026-40209, CVE-2026-40210, CVE-2026-40211, CVE-2026-42004, CVE-2026-42005

Detections

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