Home/CVE/NoMachine Server is affected by Buffer Overflow. IOCTL Handler 0x22001B in the NoMachine Server above 4.0.346 and below
CVE

CVE-2021-42972

NoMachine Server is affected by Buffer Overflow. IOCTL Handler 0x22001B in the NoMachine Server above 4.0.346 and below

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.

HIGH · CVSS 8.8 EPSS 0.00075
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules5 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

1
nomachine server> 4.0.346 and < 7.7.4
⚠

Public Exploits & PoCs

1
pocwww.sentinelone.com · usb-over-ethernet-multiple-privilege-escalation-vulnerabi...www.sentinelone.com
◈

Sigma Hunt Rules

5
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPotential Server Side Template Injection In Velocity
producthighRemote Server Service Abuse for Lateral Movement
producthighRemote Server Service Abuse
producthighSuspicious Child Process Of SQL Server
producthighSuspicious Process By Web Server Process
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Dec 2021 · 08:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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