CVE-2020-17395: Parallels Desktop Networking Service Integer Underflow Privilege Escalation Vulnerability
First published: Tue Aug 25 2020(Updated: )
This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.4. 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 prl_naptd process. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before writing to memory. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. Was ZDI-CAN-11134.
Credit: zdi-disclosures@trendmicro.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Parallels Desktop for Mac | <16.0.0 | |
| Parallels Desktop for Mac |
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Reference Links
Frequently Asked Questions
What is CVE-2020-17395?
CVE-2020-17395 is a vulnerability in Parallels Desktop Networking Service that allows local attackers to escalate privileges on affected installations.
How does CVE-2020-17395 work?
CVE-2020-17395 is exploited by executing high-privileged code on the target guest system.
What is the severity of CVE-2020-17395?
CVE-2020-17395 has a severity rating of 8.2 (high).
Which versions of Parallels Desktop are affected?
Versions up to and excluding 16.0.0 of Parallels Desktop on macOS are affected.
How can I fix CVE-2020-17395?
To fix CVE-2020-17395, you should update Parallels Desktop to a version higher than 16.0.0.
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