Advisory Details

June 1st, 2022

Microsoft Windows DiagTrack Service Link Following Privilege Escalation Vulnerability

ZDI-22-808
ZDI-CAN-15973

CVE ID CVE-2022-24479
CVSS SCORE 7.8, (AV:L/AC:L/PR:L/UI:N/S:U/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 DiagTrack service. By creating a symbolic link, an attacker can abuse the service to overwrite arbitrary files. 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-2022-24479
DISCLOSURE TIMELINE
  • 2021-12-01 - Vulnerability reported to vendor
  • 2022-06-01 - Coordinated public release of advisory
CREDIT JeongOh Kyea with THEORI
BACK TO ADVISORIES