CVE-2018-9336

HIGH

OpenVPN 2.4.0-2.4.5 - Double Free via Malformed Interactive Service Request

Title source: llm
STIX 2.1

Description

openvpnserv.exe (aka the interactive service helper) in OpenVPN 2.4.x before 2.4.6 allows a local attacker to cause a double-free of memory by sending a malformed request to the interactive service. This could cause a denial-of-service through memory corruption or possibly have unspecified other impact including privilege escalation.

References (5)

Core 5
Core References
Release Notes, Third Party Advisory x_refsource_confirm
https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6
Mailing List, Third Party Advisory vendor-advisory x_refsource_slackware
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761
Exploit, Third Party Advisory x_refsource_misc
https://www.tenable.com/security/research/tra-2018-09
Release Notes, Vendor Advisory x_refsource_confirm
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24

Scores

CVSS v3 7.8
EPSS 0.0061
EPSS Percentile 44.4%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-415
Status published
Products (6)
openvpn/openvpn 2.4.0 - 2.4.6
slackware/slackware_linux 13.0
slackware/slackware_linux 13.1
slackware/slackware_linux 13.37
slackware/slackware_linux 14.0
slackware/slackware_linux 14.1
Published May 01, 2018
Tracked Since Feb 18, 2026