// For flags

CVE-2020-24556

Trend Micro Apex One Hard Link Privilege Escalation Vulnerability

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 and Worry-Free Business Security Services on Microsoft Windows may allow an attacker to create a hard link to any file on the system, which then could be manipulated to gain a privilege escalation and code execution. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.

Una vulnerabilidad en Trend Micro Apex One, OfficeScan XG SP1, Worry-Free Business Security 10 SP1 y Worry-Free Business Security Services en Microsoft Windows, puede permitir a un atacante crear un enlace físico para cualquier archivo en el sistema, que luego podría manipularse para obtener una escalada de privilegios y una ejecución de código. Un atacante debe primero obtener la capacidad de ejecutar código poco privilegiado en el sistema objetivo para explotar esta vulnerabilidad. Tenga en cuenta que la versión 1909 (compilación del SO 18363.719) de Microsoft Windows 10 mitiga los enlaces físicos, pero las versiones anteriores están afectadas

This vulnerability allows local attackers to escalate privileges on affected installations of Trend Micro Apex One. 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 ApexOne Security Agent. By creating a hard link, an attacker can abuse the service to overwrite the contents of a chosen file. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of SYSTEM.

*Credits: @Kharosx0
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-08-20 CVE Reserved
  • 2020-08-31 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-25 EPSS 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"
saas
Search vendor "Trendmicro" for product "Apex One" and version "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 Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
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"
--
Affected
in Apple
Search vendor "Apple"
Macos
Search vendor "Apple" for product "Macos"
--
Safe
Trendmicro
Search vendor "Trendmicro"
Worry-free Business Security Services
Search vendor "Trendmicro" for product "Worry-free Business Security Services"
--
Affected
in Microsoft
Search vendor "Microsoft"
Windows
Search vendor "Microsoft" for product "Windows"
--
Safe