Advisory Details

October 26th, 2020

Trend Micro Antivirus for Mac Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability

CVE ID	CVE-2020-27014
CVSS SCORE	8.2, AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Trend Micro
AFFECTED PRODUCTS	Antivirus for Mac
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro Antivirus for Mac. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the KERedirect kext. 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 kernel.
ADDITIONAL DETAILS	Trend Micro has issued an update to correct this vulnerability. More details can be found at: https://helpcenter.trendmicro.com/en-us/article/TMKA-09974
DISCLOSURE TIMELINE	2020-06-24 - Vulnerability reported to vendor 2020-10-26 - Coordinated public release of advisory
CREDIT	Cees Elzinga from Danish Cyber Defence

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