NoMachine Uncontrolled Search Path Element Local Privilege Escalation Vulnerability

August 1st, 2024
ZDI-24-1042 ZDI-CAN-24039

CVE ID

CVE-2024-7253

CVSS Score

7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

NoMachine

Affected Products

NoMachine

Vulnerability Details

This vulnerability allows local attackers to escalate privileges on affected installations of NoMachine. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within nxnode.exe. The process loads a library from an unsecured location. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

Additional Details

NoMachine has issued an update to correct this vulnerability. More details can be found at:
https://kb.nomachine.com/TR07V11184

Disclosure Timeline

  • 2024-07-16 - Vulnerability reported to vendor
  • 2024-08-01 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated

Credit

bananabr

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