8.8
CWE
121
Advisory Published
Updated
Advisory Published

CVE-2021-31420: Parallels Desktop Toolgate Stack-based Buffer Overflow Privilege Escalation Vulnerability

First published: Thu Apr 29 2021(Updated: )

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 the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the hypervisor.

Credit: zdi-disclosures@trendmicro.com

Affected SoftwareAffected VersionHow to fix
Parallels Desktop
Parallels Parallels Desktop=16.1.0-48950

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is CVE-2021-31420?

    CVE-2021-31420 is a vulnerability that allows local attackers to escalate privileges on affected installations of Parallels Desktop 16.1.0-48950.

  • How does CVE-2021-31420 impact Parallels Desktop?

    CVE-2021-31420 allows local attackers to escalate privileges on Parallels Desktop 16.1.0-48950 installations.

  • What is the severity of CVE-2021-31420?

    CVE-2021-31420 has a severity rating of 8.8 (high).

  • How can an attacker exploit CVE-2021-31420?

    An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit CVE-2021-31420.

  • Are there any references for CVE-2021-31420?

    Yes, you can find more information about CVE-2021-31420 at the following references: [KB Article](https://kb.parallels.com/en/125013) and [ZDI Advisory](https://www.zerodayinitiative.com/advisories/ZDI-21-428/).

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203