CVE-2021-27259: Parallels Desktop Toolgate Integer Overflow Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.0.1-48919. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-12021.
Other sources
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 guest system in order to exploit this vulnerability. The specific flaw exists within the Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this Parallels Desktop vulnerability?
The vulnerability ID for this Parallels Desktop vulnerability is CVE-2021-27259.
What is the title of this Parallels Desktop vulnerability?
The title of this Parallels Desktop vulnerability is Parallels Desktop Toolgate Integer Overflow Privilege Escalation Vulnerability.
What is the severity rating of CVE-2021-27259?
The severity rating of CVE-2021-27259 is 7.8 (high).
Which software versions are affected by this Parallels Desktop vulnerability?
This Parallels Desktop vulnerability affects version 16.0.1 of Parallels Desktop.
How can this Parallels Desktop vulnerability be exploited?
This Parallels Desktop vulnerability can be exploited by local attackers who have the ability to execute low-privileged code on the target guest system.