FreeBSD : openvpn -- deferred authentication can be bypassed in specific circumstances (efb965be-a2c0-11eb-8956-1951a8617e30)

high Nessus Plugin ID 148928

Synopsis

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

Description

Gert Doring reports :

OpenVPN 2.5.1 and earlier versions allows a remote attackers to bypass authentication and access control channel data on servers configured with deferred authentication, which can be used to potentially trigger further information leaks.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 148928

File Name: freebsd_pkg_efb965bea2c011eb89561951a8617e30.nasl

Version: 1.3

Type: local

Family: FreeBSD Local Security Checks

Published: 4/22/2021

Updated: 5/24/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-15078

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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: 4/21/2021

Vulnerability Publication Date: 3/2/2021

Reference Information

CVE: CVE-2020-15078

Detections

Analytics