Security Bulletin: Trend Micro Antivirus for Mac Web Threat Protection Blocklist Race Condition Vulnerability

Bulletin Date: October 22, 2020

Platform: macOS

Assigned CVEs: CVE-2020-27014

CVSSv3 Score: 8.2

Severity Rating: High

Summary

The Trend Micro Antivirus for Mac 2020 consumer family of products has released an update via ActiveUpdate to address a race condition vulnerability in the Web Threat Protection Dynamic Blocklist component.

Affected versions

Solution

Trend Micro has addressed this vulnerability on the 2020 family of products (version 10.x) via patches that are available now through the product’s automatic ActiveUpdate feature for all versions of Trend Micro Antivirus for Mac listed above. Customers who have at least version 10.0 will already have the necessary patch applied. Customers who have version 9.0 and below are recommended to install the latest version (2021 v11) to address the issue.

The latest versions of Trend Micro Antivirus for Mac can be found here.

Vulnerability Details

Trend Micro Antivirus for Mac 2020 (Consumer) contains a race condition vulnerability in the Web Threat Protection Blocklist component, that if exploited, could allow an attacker to case a kernel panic or crash.

An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.

Trend Micro has received no reports nor is aware of any actual attacks against the affected product related to this vulnerability at this time.

Acknowledgement

Trend Micro would like to thank the following individual for responsibly disclosing the issue and working with Trend Micro to help protect our customers:

• Cees Elzinga from Danish Cyber Defence working with Trend Micro’s Zero Day Initiative

Additional Assistance

Customers who have questions are encouraged to contact Trend Micro Technical Support for further assistance.

Technical Reference

• ZDI-20-1285