Advisory Details

April 23rd, 2021

Trend Micro HouseCall for Home Networks Incorrect Permission Assignment Privilege Escalation Vulnerability

CVE ID	CVE-2021-31519
CVSS SCORE	7.3, AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Trend Micro
AFFECTED PRODUCTS	HouseCall for Home Networks
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro HouseCall for Home Networks. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the product installer. The issue results from incorrect permissions set on product folders created by the installer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of an administrator.
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-10310
DISCLOSURE TIMELINE	2021-01-15 - Vulnerability reported to vendor 2021-04-23 - Coordinated public release of advisory
CREDIT	Xavier Danest - Decathlon

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