FreeBSD : openvpn -- Potential authentication by-pass with multiple deferred authentication plug-ins (45a72180-a640-11ec-a08b-85298243e224)

critical Nessus Plugin ID 159035

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Synopsis

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

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 45a72180-a640-11ec-a08b-85298243e224 advisory.

- OpenVPN 2.1 until v2.4.12 and v2.5.6 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-2022-0547)

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 packages.

Plugin Details

Severity: Critical

ID: 159035

File Name: freebsd_pkg_45a72180a64011eca08b85298243e224.nasl

Version: 1.4

Type: local

Family: FreeBSD Local Security Checks

Published: 3/17/2022

Updated: 11/6/2023

Supported Sensors: 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:freebsd:freebsd:openvpn, p-cpe:/a:freebsd:freebsd:openvpn-mbedtls, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 3/17/2022

Vulnerability Publication Date: 3/16/2022

Reference Information

CVE: CVE-2022-0547

Detections

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