Debian dsa-6459 : libnet-dns-perl - security update

critical Nessus Plugin ID 338856

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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-6459 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6459-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso August 22, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : libnet-dns-perl CVE ID : CVE-2026-64193 CVE-2026-64194 Debian Bug : 1142503

Two vulnerabilities were discovered in libnet-dns-perl, a Perl module to perform DNS queries, which could result in denial of service or remote code execution.

For the stable distribution (trixie), these problems have been fixed in version 1.56-0+deb13u1.

We recommend that you upgrade your libnet-dns-perl packages.

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

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 libnet-dns-perl packages.

Plugin Details

Severity: Critical

ID: 338856

File Name: debian_DSA-6459.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 8/22/2026

Updated: 8/22/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.13

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-2026-64193

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: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:libnet-dns-perl

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/22/2026

Vulnerability Publication Date: 7/20/2026

Reference Information

CVE: CVE-2026-64193, CVE-2026-64194

Detections

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