Debian dsa-6233 : pdns-backend-bind - security update

critical Nessus Plugin ID 310796

Synopsis

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

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6233 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6233-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff April 28, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : pdns CVE ID : CVE-2026-33257 CVE-2026-33260 CVE-2026-33608 CVE-2026-33609 CVE-2026-33610 CVE-2026-33611

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

For the stable distribution (trixie), these problems have been fixed in version 4.9.14-0+deb13u1.

We recommend that you upgrade your pdns packages.

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

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 pdns-backend-bind packages.

Plugin Details

Severity: Critical

ID: 310796

File Name: debian_DSA-6233.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 4/29/2026

Updated: 4/29/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2026-33608

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:pdns-backend-tinydns, p-cpe:/a:debian:debian_linux:pdns-backend-ldap, p-cpe:/a:debian:debian_linux:pdns-backend-lua2, p-cpe:/a:debian:debian_linux:pdns-ixfrdist, p-cpe:/a:debian:debian_linux:pdns-backend-mysql, p-cpe:/a:debian:debian_linux:pdns-backend-odbc, p-cpe:/a:debian:debian_linux:pdns-backend-pipe, p-cpe:/a:debian:debian_linux:pdns-backend-lmdb, p-cpe:/a:debian:debian_linux:pdns-backend-remote, p-cpe:/a:debian:debian_linux:pdns-backend-bind, p-cpe:/a:debian:debian_linux:pdns-server, p-cpe:/a:debian:debian_linux:pdns-backend-pgsql, p-cpe:/a:debian:debian_linux:pdns-backend-geoip, p-cpe:/a:debian:debian_linux:pdns-backend-sqlite3, p-cpe:/a:debian:debian_linux:pdns-tools, 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: 4/28/2026

Vulnerability Publication Date: 4/22/2026

Reference Information

CVE: CVE-2026-33257, CVE-2026-33260, CVE-2026-33608, CVE-2026-33609, CVE-2026-33610, CVE-2026-33611

Detections

Analytics