OpenVPN 2.x < 2.3. 18/ 2.4.x < 2.4.4 Buffer Overflow Vulnerability w/ key-method 1

high Nessus Plugin ID 103701


An application on the remote host is affected by a bufferoverflow vulnerability.


According to its self-reported version number, the version of OpenVPN installed on the remote host is affected by an error related to a weakness in the 'key-method 1' implementation which could allow buffer overflow attacks and result in unexpected code execution


Upgrade to OpenVPN 2.3.18 / 2.4.4 or later.

See Also

Plugin Details

Severity: High

ID: 103701

File Name: openvpn_2_3_18_and_2_4_4_win.nasl

Version: 1.3

Type: local

Agent: windows

Family: Windows

Published: 10/6/2017

Updated: 11/12/2019

Supported Sensors: Nessus Agent

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS Score Source: CVE-2017-12166


Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: cpe:/a:openvpn:openvpn

Required KB Items: installed_sw/OpenVPN

Exploit Ease: No known exploits are available

Patch Publication Date: 9/26/2017

Vulnerability Publication Date: 9/29/2017

Reference Information

CVE: CVE-2017-12166

IAVA: 2017-A-0285