CVE-2021-33436

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

28/04/2022

Last modified:

07/05/2022

Description

NoMachine for Windows prior to version 6.15.1 and 7.5.2 suffer from local privilege escalation due to the lack of safe DLL loading. This vulnerability allows local non-privileged users to perform DLL Hijacking via any writable directory listed under the system path and ultimately execute code as NT AUTHORITY\SYSTEM.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.30 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

7.30

Severity 3.x

HIGH

Vector 2.0

AV:L/AC:H/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.20 MEDIUM
Vector: AV:L/AC:H/Au:N/C:C/I:C/A:C

Attack Vector (AV): Local
Attack Complexity (AC): High
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

6.20

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:nomachine:nomachine::::::::	6.0.0 (including)	6.15.1 (excluding)
cpe:2.3:a:nomachine:nomachine::::::::	7.0 (including)	7.5.2 (excluding)
cpe:2.3:o:microsoft:windows:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-33436

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools