Advisory Details

October 11th, 2023

Microsoft Windows DirectX GpuMmu Race Condition Local Privilege Escalation Vulnerability

ZDI-23-1555
ZDI-CAN-21605

CVE ID CVE-2023-38159
CVSS SCORE 8.8, AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. 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 the handling of GPU mapped memory. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38159
DISCLOSURE TIMELINE
  • 2023-07-20 - Vulnerability reported to vendor
  • 2023-10-11 - Coordinated public release of advisory
CREDIT Anonymous
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