Advisory Details

June 30th, 2022

Parallels Desktop ACPI Out-Of-Bounds Read Local Privilege Escalation Vulnerability

ZDI-22-940
ZDI-CAN-16554

CVE ID CVE-2022-34889
CVSS SCORE 8.2, AV:L/AC:L/PR:H/UI:N/S:C/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 high-privileged code on the target guest system in order to exploit this vulnerability.

The specific flaw exists within the ACPI virtual device. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.

ADDITIONAL DETAILS Parallels has issued an update to correct this vulnerability. More details can be found at:
https://kb.parallels.com/125013
DISCLOSURE TIMELINE
  • 2022-03-02 - Vulnerability reported to vendor
  • 2022-06-30 - Coordinated public release of advisory
CREDIT Ben McBride
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