CVE-2021-34867: Parallels Desktop Toolgate Uncontrolled Memory Allocation Privilege Escalation Vulnerability
First published: Tue Jan 25 2022(Updated: )
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.3-49160. 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 Toolgate component. The issue results from the lack of proper validation of user-supplied data, which can result in an uncontrolled memory allocation. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13672.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Parallels Parallels | =16.1.3-49160 | |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Parallels Desktop vulnerability?
The vulnerability ID is CVE-2021-34867.
What is the title of this Parallels Desktop vulnerability?
The title of this vulnerability is Parallels Desktop Toolgate Uncontrolled Memory Allocation Privilege Escalation Vulnerability.
How can the attacker exploit this vulnerability?
The attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability.
What is the affected software?
The affected software is Parallels Desktop 16.1.3-49160.
What is the severity of this vulnerability?
The severity of this vulnerability is high, with a CVSS score of 8.2.
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