Advisory Details

July 30th, 2021

Trend Micro Apex One Incorrect Permission Preservation Authentication Bypass Vulnerability

CVE ID	CVE-2021-32465
CVSS SCORE	7.5, AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Trend Micro
AFFECTED PRODUCTS	Apex One
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of Trend Micro Apex One. Authentication as a low-privileged Windows domain user is required to exploit this vulnerability. The specific flaw exists within the product patching functionality. When applying a patch to the product, the permissions on some files are not properly preserved. An attacker can leverage this vulnerability to bypass authentication on the system.
ADDITIONAL DETAILS	Trend Micro has issued an update to correct this vulnerability. More details can be found at: https://success.trendmicro.com/solution/000287819
DISCLOSURE TIMELINE	2021-04-28 - Vulnerability reported to vendor 2021-07-30 - Coordinated public release of advisory
CREDIT	HexKitchen

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