CVE-2018-9336

Slackware Security Advisory - openvpn Updates

Severity Score

7.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

openvpnserv.exe (también conocido como interactive service helper) en OpenVPN en versiones 2.4.x anteriores a la 2.4.6 permite que un atacante local provoque una doble liberación (double free) de memoria enviando una petición mal formada al servicio interactivo. Esto podría provocar una denegación de servicio (DoS) al corromper la memoria o, posiblemente, otro impacto no especificado, incluyendo el escalado de privilegios.

New openvpn packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix a security issue.

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-04-05 CVE Reserved
2018-04-27 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-04-01 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-415: Double Free

CAPEC

References (5)

URL	Tag	Source
https://github.com/OpenVPN/openvpn/releases/tag/v2.4.6	Release Notes

URL	Date	SRC
https://www.tenable.com/security/research/tra-2018-09	2024-08-05

URL	Date	SRC
https://github.com/OpenVPN/openvpn/commit/1394192b210cb3c6624a7419bcf3ff966742e79b	2018-06-13

URL	Date	SRC
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2018&m=slackware-security.568761	2018-06-13
https://community.openvpn.net/openvpn/wiki/ChangesInOpenvpn24	2018-06-13

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Openvpn Search vendor "Openvpn"		Openvpn Search vendor "Openvpn" for product "Openvpn"				>= 2.4.0 < 2.4.6 Search vendor "Openvpn" for product "Openvpn" and version " >= 2.4.0 < 2.4.6"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				13.0 Search vendor "Slackware" for product "Slackware Linux" and version "13.0"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				13.1 Search vendor "Slackware" for product "Slackware Linux" and version "13.1"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				13.37 Search vendor "Slackware" for product "Slackware Linux" and version "13.37"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				14.0 Search vendor "Slackware" for product "Slackware Linux" and version "14.0"		-		Affected
Slackware Search vendor "Slackware"		Slackware Linux Search vendor "Slackware" for product "Slackware Linux"				14.1 Search vendor "Slackware" for product "Slackware Linux" and version "14.1"		-		Affected