Advisory Details

June 30th, 2022

Parallels Desktop Updater Race Condition Local Privilege Escalation Vulnerability

ZDI-22-943
ZDI-CAN-16396

CVE ID CVE-2022-34892
CVSS SCORE 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Parallels
AFFECTED PRODUCTS Desktop
VULNERABILITY DETAILS

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop. 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 update machanism. 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 root.

ADDITIONAL DETAILS Parallels has issued an update to correct this vulnerability. More details can be found at:
https://kb.parallels.com/125013
DISCLOSURE TIMELINE
  • 2022-03-09 - Vulnerability reported to vendor
  • 2022-06-30 - Coordinated public release of advisory
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