CVE-2020-8873: Parallels Desktop xHCI Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability
First published: Mon Mar 23 2020(Updated: )
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.2-47123. 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 xHCI component. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. Was ZDI-CAN-10031.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Parallels Desktop | ||
| Parallels Desktop | <15.1.3 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-8873?
CVE-2020-8873 is a Parallels Desktop vulnerability that allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.2-47123.
How does CVE-2020-8873 affect Parallels Desktop?
CVE-2020-8873 affects installations of Parallels Desktop 15.1.2-47123 on macOS.
How can an attacker exploit CVE-2020-8873?
An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit CVE-2020-8873.
What is the severity rating of CVE-2020-8873?
CVE-2020-8873 has a severity rating of 8.2 (high).
How can I fix CVE-2020-8873?
To fix CVE-2020-8873, it is recommended to update Parallels Desktop to 15.1.3 or later.
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