What is CVE-2021-42972?

CVE-2021-42972 is a vulnerability that affects NoMachine Server versions above 4.0.346 and below 7.7.4, allowing local attackers to execute arbitrary code in kernel mode or cause a denial of service.

What is the severity of CVE-2021-42972?

The severity of CVE-2021-42972 is high, with a CVSS score of 8.8.

How can I fix CVE-2021-42972?

To fix CVE-2021-42972, it is recommended to update NoMachine Server to a version above 7.7.4 or apply any available patches or mitigations provided by the vendor.

Is there any additional information about CVE-2021-42972?

For more information about CVE-2021-42972, you can refer to the following link: [https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/](https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/)

Vulnerability/
CVE-2021-42972

high

8.8

CWE

120 119

7/12/2021

21/11/2024

CVE-2021-42972: Buffer Overflow

Q: How does CVE-2021-42972 impact NoMachine Server?

CVE-2021-42972 allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) in NoMachine Server.

First published: Tue Dec 07 2021(Updated: )

NoMachine Server is affected by Buffer Overflow. IOCTL Handler 0x22001B in the NoMachine Server above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) via specially crafted I/O Request Packet.

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

Affected Software	Affected Version	How to fix
NoMachine Server	>4.0.346<7.7.4
	>4.0.346<7.7.4

Never miss a vulnerability like this again

Reference Links

https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/

Frequently Asked Questions

What is CVE-2021-42972?
CVE-2021-42972 is a vulnerability that affects NoMachine Server versions above 4.0.346 and below 7.7.4, allowing local attackers to execute arbitrary code in kernel mode or cause a denial of service.
How does CVE-2021-42972 impact NoMachine Server?
CVE-2021-42972 allows local attackers to execute arbitrary code in kernel mode or cause a denial of service (memory corruption and OS crash) in NoMachine Server.
What is the severity of CVE-2021-42972?
The severity of CVE-2021-42972 is high, with a CVSS score of 8.8.
How can I fix CVE-2021-42972?
To fix CVE-2021-42972, it is recommended to update NoMachine Server to a version above 7.7.4 or apply any available patches or mitigations provided by the vendor.
Is there any additional information about CVE-2021-42972?
For more information about CVE-2021-42972, you can refer to the following link: [https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/](https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalation-vulnerabilities-in-aws-and-other-major-cloud-services/)

collector/nvd-index
agent/type
collector/mitre-cve
source/MITRE
agent/severity
agent/weakness
agent/references
agent/first-publish-date
agent/description
collector/nvd-api
source/NVD
agent/software-canonical-lookup
agent/last-modified-date
agent/author
agent/softwarecombine
agent/tags
agent/event
vendor/nomachine
canonical/nomachine server

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.