OpenVPN 2.3.12 < 2.3.15 / 2.4.x < 2.4.2 Denial of Service Vulnerability (Windows)

high Nessus Plugin ID 125259

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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 installed on the remote Windows host is 2.3.12 prior to 2.3.15 or 2.4.x prior to 2.4.2. It is, therefore, affected by a denial of service (DoS) vulnerability due to invalid packet processing logic. An unauthenticated, remote attacker can exploit this issue, by sending a large control packet, to cause the application to stop responding.

Solution

Upgrade to OpenVPN 2.3.15 / 2.4.2 or later.

Plugin Details

Severity: High

ID: 125259

File Name: openvpn_2_4_2_cve_2017_7478.nasl

Version: 1.4

Type: local

Agent: windows

Family: Windows

Published: 5/17/2019

Updated: 5/27/2019

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2017-7478

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/a:openvpn:openvpn

Required KB Items: installed_sw/OpenVPN Server

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/11/2017

Vulnerability Publication Date: 5/4/2017

Reference Information

CVE: CVE-2017-7478

BID: 98444

Detections

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