Debian dsa-6234 : pdns-recursor - security update

high Nessus Plugin ID 310795

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-6234 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6234-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff April 28, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : pdns-recursor CVE ID : CVE-2026-33257 CVE-2026-33258 CVE-2026-33259 CVE-2026-33260 CVE-2026-33261 CVE-2026-33600 CVE-2026-33601

Multiple vulnerabiliites have been discovered in PDNS Recursor, a resolving name server, which could result in denial of service.

For the stable distribution (trixie), these problems have been fixed in version 5.2.9-0+deb13u1.

We recommend that you upgrade your pdns-recursor packages.

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

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-recursor packages.

Plugin Details

Severity: High

ID: 310795

File Name: debian_DSA-6234.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: Medium

Score: 5.0

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-2026-33260

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

Vulnerability Information

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

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-2026-33258, CVE-2026-33259, CVE-2026-33260, CVE-2026-33261, CVE-2026-33600, CVE-2026-33601

Detections

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