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Debian dsa-6071 : libunbound-dev - security update

high Nessus Plugin ID 277500

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6071 advisory.

 - ------------------------------------------------------------------------- Debian Security Advisory DSA-6071-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff December 04, 2025 https://www.debian.org/security/faq
 - -------------------------------------------------------------------------

 Package : unbound CVE ID : CVE-2025-11411

 It was discovered that incorrect handling of promiscuous NS RRSets in Unbound, a validating, recursive, caching DNS resolver, could result in cache poisoning.

 For the stable distribution (trixie), this problem has been fixed in version 1.22.0-2+deb13u1.

 We recommend that you upgrade your unbound packages.

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

 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 this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libunbound-dev packages.

See Also

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

https://security-tracker.debian.org/tracker/CVE-2025-11411

https://packages.debian.org/source/trixie/unbound

Plugin Details

Severity: High

ID: 277500

File Name: debian_DSA-6071.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/4/2025

Updated: 12/4/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 2.9

CVSS v2

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 3.9

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

CVSS Score Source: CVE-2025-11411

CVSS v3

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 6

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

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

CVSS v4

Risk Factor: High

Base Score: 7.1

Threat Score: 4.1

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python3-unbound, p-cpe:/a:debian:debian_linux:unbound-anchor, p-cpe:/a:debian:debian_linux:unbound, p-cpe:/a:debian:debian_linux:libunbound8, p-cpe:/a:debian:debian_linux:libunbound-dev, p-cpe:/a:debian:debian_linux:unbound-host, 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: 12/4/2025

Vulnerability Publication Date: 10/22/2025

Reference Information

CVE: CVE-2025-11411