What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2018-7544.

What is the severity of CVE-2018-7544?

The severity of CVE-2018-7544 is critical, with a severity value of 9.1.

What is the affected software for CVE-2018-7544?

The affected software for CVE-2018-7544 is OpenVPN version 2.4.5.

What is the description of CVE-2018-7544?

CVE-2018-7544 is a cross-protocol scripting issue in the management interface of OpenVPN through version 2.4.5, allowing attackers to execute arbitrary management commands.

How can I fix CVE-2018-7544?

To fix CVE-2018-7544, it is recommended to update OpenVPN to a version that is not affected by this vulnerability.

Vulnerability/
CVE-2018-7544

critical

9.1

CWE

134

16/3/2018

14/11/2024

CVE-2018-7544

First published: Fri Mar 16 2018(Updated: )

** DISPUTED ** A cross-protocol scripting issue was discovered in the management interface in OpenVPN through 2.4.5. When this interface is enabled over TCP without a password, and when no other clients are connected to this interface, attackers can execute arbitrary management commands, obtain sensitive information, or cause a denial of service (SIGTERM) by triggering XMLHttpRequest actions in a web browser. This is demonstrated by a multipart/form-data POST to http://localhost:23000 with a "signal SIGTERM" command in a TEXTAREA element. NOTE: The vendor disputes that this is a vulnerability. They state that this is the result of improper configuration of the OpenVPN instance rather than an intrinsic vulnerability, and now more explicitly warn against such configurations in both the management-interface documentation, and with a runtime warning.

Credit: cve@mitre.org cve@mitre.org

Affected Software	Affected Version	How to fix
Openvpn Openvpn	<=2.4.5
	<=2.4.5

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Reference Links

http://blog.0xlabs.com/2018/03/openvpn-remote-information-disclosure.html

Frequently Asked Questions

What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-7544.
What is the severity of CVE-2018-7544?
The severity of CVE-2018-7544 is critical, with a severity value of 9.1.
What is the affected software for CVE-2018-7544?
The affected software for CVE-2018-7544 is OpenVPN version 2.4.5.
What is the description of CVE-2018-7544?
CVE-2018-7544 is a cross-protocol scripting issue in the management interface of OpenVPN through version 2.4.5, allowing attackers to execute arbitrary management commands.
How can I fix CVE-2018-7544?
To fix CVE-2018-7544, it is recommended to update OpenVPN to a version that is not affected by this vulnerability.

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agent/event
collector/nvd-api
source/NVD
agent/software-canonical-lookup
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/source
status/disputed
vendor/openvpn
canonical/openvpn openvpn
version/openvpn openvpn/2.4.5

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