// For flags

CVE-2021-44024

Trend Micro Apex One Link Following Denial-of-Service Vulnerability

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A link following denial-of-service vulnerability in Trend Micro Apex One (on-prem and SaaS) and Trend Micro Worry-Free Business Security (10.0 SP1 and Services) could allow a local attacker to overwrite arbitrary files in the context of SYSTEM. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Una vulnerabilidad de denegación de servicio en Trend Micro Apex One (on-prem y SaaS) y Trend Micro Worry-Free Business Security (versiones 10.0 SP1 y Services) podría permitir a un atacante local sobrescribir archivos arbitrarios en el contexto de SYSTEM. Tenga en cuenta: un atacante debe obtener primero la capacidad de ejecutar código poco privilegiado en el sistema de destino para poder explotar esta vulnerabilidad

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Trend Micro Apex One Security Agent. 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 Real-time Scan Service. By creating a symbolic link, an attacker can abuse the service to overwrite a file. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

*Credits: Abdelhamid Naceri (halov)
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-11-18 CVE Reserved
  • 2022-01-06 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-59: Improper Link Resolution Before File Access ('Link Following')
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"
Apex One
Search vendor "Trendmicro" for product "Apex One"
2019
Search vendor "Trendmicro" for product "Apex One" and version "2019"
-
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Trendmicro
Search vendor "Trendmicro"
Apex One
Search vendor "Trendmicro" for product "Apex One"
2019
Search vendor "Trendmicro" for product "Apex One" and version "2019"
saas
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Trendmicro
Search vendor "Trendmicro"
Worry-free Business Security
Search vendor "Trendmicro" for product "Worry-free Business Security"
10.0
Search vendor "Trendmicro" for product "Worry-free Business Security" and version "10.0"
sp1
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe
Trendmicro
Search vendor "Trendmicro"
Worry-free Business Security Services
Search vendor "Trendmicro" for product "Worry-free Business Security Services"
-saas
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe