CVE-2021-42979 — HIGH (8.8)

Q: How severe is CVE-2021-42979?

CVE-2021-42979 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-42979?

Check the references section above for vendor advisories and patch information. Affected products include: Nomachine Cloud Server.

Vulnerability Description

NoMachine Cloud Server is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Cloud 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nomachine	Cloud Server	< 7.7.4

Related Weaknesses (CWE)

CWE-190

References

https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalationExploitTechnical DescriptionThird Party Advisory
https://www.sentinelone.com/labs/usb-over-ethernet-multiple-privilege-escalationExploitTechnical DescriptionThird Party Advisory

FAQ

What is CVE-2021-42979?

CVE-2021-42979 is a vulnerability with a CVSS score of 8.8 (HIGH). NoMachine Cloud Server is affected by Integer Overflow. IOCTL Handler 0x22001B in the NoMachine Cloud Server above 4.0.346 and below 7.7.4 allow local attackers to execute arbitrary code in kernel mod...

How severe is CVE-2021-42979?

CVE-2021-42979 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-42979?

Check the references section above for vendor advisories and patch information. Affected products include: Nomachine Cloud Server.