Debian dla-4079 : openvpn - security update

critical Nessus Plugin ID 232531

Synopsis

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

Description

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4079 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4079-1 [email protected] https://www.debian.org/lts/security/ Aquila Macedo March 08, 2025 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : openvpn Version : 2.5.1-3+deb11u1 CVE ID : CVE-2022-0547 CVE-2024-5594 Debian Bug : 1008015 1074488 1086653

Two vulnerabilities were discovered in openvpn, a virtual private network application which could result in authentication bypass or data injection.

CVE-2022-0547

OpenVPN may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.

CVE-2024-5594

OpenVPN does not sanitize PUSH_REPLY messages properly which attackers can use to inject unexpected arbitrary data into third-party executables or plug-ins.

For Debian 11 bullseye, these problems have been fixed in version 2.5.1-3+deb11u1.

We recommend that you upgrade your openvpn packages.

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

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

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 openvpn packages.

Plugin Details

Severity: Critical

ID: 232531

File Name: debian_DLA-4079.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/10/2025

Updated: 3/10/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2022-0547

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:11.0, p-cpe:/a:debian:debian_linux:openvpn

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/8/2025

Vulnerability Publication Date: 3/16/2022

Reference Information

CVE: CVE-2022-0547, CVE-2024-5594

IAVA: 2024-A-0608

Detections

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