What is CVE-2021-34864?

CVE-2021-34864 is a vulnerability in Parallels Desktop that allows local attackers to escalate privileges.

Which version of Parallels Desktop is affected by this vulnerability?

Parallels Desktop 16.1.3 (49160) is affected by CVE-2021-34864.

What is the severity of CVE-2021-34864?

CVE-2021-34864 has a severity rating of 8.8 (high).

Is there a fix available for CVE-2021-34864?

There is no information available about a fix for CVE-2021-34864 at this time.

Vulnerability/
CVE-2021-34864

high

8.8

CWE

284

25/10/2021

4/8/2024

CVE-2021-34864: (Pwn2Own) Parallels Desktop WinAppHelper Improper Access Control Privilege Escalation Vulnerability

First published: Mon Oct 25 2021(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 low-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the WinAppHelper component. The issue results from the lack of proper access control. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor. Was ZDI-CAN-13543.

Credit: zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
Parallels Desktop	=16.1.3

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Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-21-1000/

Frequently Asked Questions

What is CVE-2021-34864?
CVE-2021-34864 is a vulnerability in Parallels Desktop that allows local attackers to escalate privileges.
How can this vulnerability be exploited?
To exploit CVE-2021-34864, an attacker must first obtain the ability to execute low-privileged code on the target guest system.
Which version of Parallels Desktop is affected by this vulnerability?
Parallels Desktop 16.1.3 (49160) is affected by CVE-2021-34864.
What is the severity of CVE-2021-34864?
CVE-2021-34864 has a severity rating of 8.8 (high).
Is there a fix available for CVE-2021-34864?
There is no information available about a fix for CVE-2021-34864 at this time.

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vendor/parallels
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