CVE-2021-45441

Trend Micro Apex One Origin Validation Error Local Privilege Escalation Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A origin validation error vulnerability in Trend Micro Apex One (on-prem and SaaS) could allow a local attacker drop and manipulate a specially crafted file to issue commands over a certain pipe and elevate to a higher level of privileges. 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 error de comprobación de origen en Trend Micro Apex One (on-prem y SaaS) podría permitir a un atacante local soltar y manipular un archivo especialmente diseñado para emitir comandos a través de una determinada tubería y elevarse a un nivel superior de privilegios. Nota: 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 escalate privileges 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 Apex One NT RealTime Scan service. The issue results from insufficient validation of the origin of commands. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

*Credits: Lays (@_L4ys) of TrapaSecurity

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

2021-12-20 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-346: Origin Validation Error

CAPEC

References (2)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-22-017	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://success.trendmicro.com/solution/000289996	2022-07-12

URL	Date	SRC

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