Buffer Overflow in NoMachine Server Versions 4.0.346 and Below 7.7.4
CVE-2021-42972

8.8HIGH

Key Information:

Vendor

Nomachine

Status
Server
Vendor
CVE Published:
7 December 2021

What is CVE-2021-42972?

The NoMachine Server is susceptible to a buffer overflow vulnerability due to an insecure IOCTL handler (0x22001B). Versions before 7.7.4 and 4.0.346 are particularly affected, allowing local attackers to exploit this flaw. By sending specially crafted I/O Request Packets, an attacker could execute arbitrary code at the kernel level or cause a denial of service, resulting in memory corruption and potential system crashes.

References

https://www.sentinelone.com/labs/usb-over-ethernet-multip...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.