CVE-2020-24559

Trend Micro Apex One Hard Link 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 vulnerability in Trend Micro Apex One, Worry-Free Business Security 10.0 SP1 and Worry-Free Business Security Services on macOS may allow an attacker to manipulate a certain binary to load and run a script from a user-writable folder, which then would allow them to execute arbitrary code as root. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Una vulnerabilidad en Trend Micro Apex One, Worry-Free Business Security 10.0 SP1 y Worry-Free Business Security Services en macOS, puede permitir a un atacante manipular un determinado binario para cargar y ejecutar un script desde una carpeta editable por el usuario, lo que luego les permitiría ejecutar código arbitrario como root. Un atacante debe primero obtener la capacidad de ejecutar código poco privilegiado en el sistema objetivo para explotar esta vulnerabilidad

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 root.

*Credits: @Kharosx0

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

References (3)

URL	Tag	Source
https://www.zerodayinitiative.com/advisories/ZDI-20-1096	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://success.trendmicro.com/solution/000263632	2021-09-16
https://success.trendmicro.com/solution/000267260	2021-09-16

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	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	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	Apple Search vendor "Apple"	Macos Search vendor "Apple" for product "Macos"	-	-	Safe
Trendmicro Search vendor "Trendmicro"	Officescan Search vendor "Trendmicro" for product "Officescan"	xg Search vendor "Trendmicro" for product "Officescan" and version "xg"	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	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