Advisory Details

July 29th, 2024

Microsoft PC Manager Link Following Local Privilege Escalation Vulnerability

ZDI-24-978
ZDI-CAN-22503

CVE ID
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 PC Manager
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft PC Manager. 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 MSPC Manager Service. By creating a symbolic link, an attacker can abuse the service to delete a file. 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/en-us/acknowledgement/online
DISCLOSURE TIMELINE
  • 2023-12-22 - Vulnerability reported to vendor
  • 2024-07-29 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated
CREDIT Filip Dragovic (@filip_dragovic)
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