OpenVPN Server 2.0.x < 2.0.4 Denial of Service Vulnerability

medium Nessus Plugin ID 128773

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Synopsis

An application on the remote Windows host is affected by a denial of service vulnerability.

Description

According to its self-reported version number, the version of OpenVPN server installed on the remote Windows host is version 2.0.x prior to 2.0.4. It is, therefore, affected by a denial of service (DoS) vulnerability in its TCP/IP accept function component. An unauthenticated, remote attacker can exploit this issue, by forcing the accept function to return an error status which leads to a null dereference in an exception handler, to cause the application to stop responding.

Solution

Upgrade to OpenVPN 2.0.4 or later.

Plugin Details

Severity: Medium

ID: 128773

File Name: openvpn_2_0_4.nasl

Version: 1.4

Type: local

Agent: windows

Family: Windows

Published: 9/16/2019

Updated: 10/31/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2005-3409

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:openvpn:openvpn

Required KB Items: installed_sw/OpenVPN Server

Exploit Available: true

Exploit Ease: No exploit is required

Patch Publication Date: 11/1/2005

Vulnerability Publication Date: 11/1/2005

Reference Information

CVE: CVE-2005-3409

BID: 15270

Detections

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