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Ubuntu 18.04 LTS / 20.04 LTS : OpenVPN vulnerability (USN-5347-1)

critical Nessus Plugin ID 159204

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-5347-1 advisory.

 It was discovered that OpenVPN incorrectly handled certain configurations with multiple authentication plugins. A remote attacker could possibly use this issue to bypass authentication using incomplete credentials.

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected openvpn package.

See Also

https://ubuntu.com/security/notices/USN-5347-1

Plugin Details

Severity: Critical

ID: 159204

File Name: ubuntu_USN-5347-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/24/2022

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

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: p-cpe:/a:canonical:ubuntu_linux:openvpn, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2022

Vulnerability Publication Date: 3/16/2022

Reference Information

CVE: CVE-2022-0547

USN: 5347-1