Advisory Details

May 7th, 2021

Trend Micro IM Security Weak Session Token Authentication Bypass Vulnerability

CVE ID	CVE-2021-31520
CVSS SCORE	7.3, AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
AFFECTED VENDORS	Trend Micro
AFFECTED PRODUCTS	IM Security
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of Trend Micro IM Security. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web console, which listens on TCP port 16373 by default. The issue results from the use of guessable session tokens. 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/000286439
DISCLOSURE TIMELINE	2020-12-23 - Vulnerability reported to vendor 2021-05-07 - Coordinated public release of advisory
CREDIT	Quentin Kaiser

BACK TO ADVISORIES