// For flags

CVE-2021-31520

Trend Micro IM Security Weak Session Token Authentication Bypass Vulnerability

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A weak session token authentication bypass vulnerability in Trend Micro IM Security 1.6 and 1.6.5 could allow an remote attacker to guess currently logged-in administrators' session session token in order to gain access to the product's web management interface.

Una vulnerabilidad de omisión de autenticación de token de sesión débil en Trend Micro IM Security versiones 1.6 y 1.6.5, podría permitir a un atacante remoto adivinar el token de sesión de los administradores que han iniciado sesión actualmente para obtener acceso a la interfaz de administración web del producto

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.

*Credits: Quentin Kaiser
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-20 CVE Reserved
  • 2021-05-07 CVE Published
  • 2024-07-11 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-287: Improper Authentication
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Trendmicro
Search vendor "Trendmicro"
 Im Security
Search vendor "Trendmicro" for product "Im Security"
 1.6
Search vendor "Trendmicro" for product "Im Security" and version "1.6"
-
Affected
Trendmicro
Search vendor "Trendmicro"
 Im Security
Search vendor "Trendmicro" for product "Im Security"
 1.6.5
Search vendor "Trendmicro" for product "Im Security" and version "1.6.5"
-
Affected