Detections
Analytics

OpenVPN < 2.3.1 Information Disclosure Vulnerability (Windows)

low Nessus Plugin ID 125260

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Synopsis

An application on the remote Windows host is affected by an information disclosure vulnerability.

Description

According to its self-reported version number, the version of OpenVPN installed on the remote Windows host is prior to 2.3.1. It is, therefore, affected by an information disclosure vulnerability in the crypto.c component due to its HMAC comparison function not running in constant time. An unauthenticated, remote attacker can exploit this, via a timing attack, to disclose potentially sensitive information.

Solution

Upgrade to OpenVPN 2.3.1 or later.

See Also

http://www.nessus.org/u?56e4cef7

Plugin Details

Severity: Low

ID: 125260

File Name: openvpn_2_3_1.nasl

Version: 1.7

Type: local

Agent: windows

Family: Windows

Published: 5/17/2019

Updated: 5/21/2024

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 2

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

CVSS Score Source: CVE-2013-2061

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.4

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

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: 5/8/2013

Vulnerability Publication Date: 9/7/2015

Reference Information

CVE: CVE-2013-2061