Parallels Desktop Updater Improper Initialization Local Privilege Escalation Vulnerability
March 7th, 2023
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 host system in order to exploit this vulnerability.
The specific flaw exists within the Updater service. The issue results from the lack of proper initialization of environment variables. 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
- 2022-08-31 - Vulnerability reported to vendor
- 2023-03-07 - Coordinated public release of advisory
Credit
kn32
