CVE-2021-33526

Privilege escalation in mbDIALUP <= 3.9R0.0

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In MB connect line mbDIALUP versions <= 3.9R0.0 a low privileged local attacker can send a command to the service running with NT AUTHORITY\SYSTEM instructing it to execute a malicous OpenVPN configuration resulting in arbitrary code execution with the privileges of the service.

En MB connect line mbDIALUP versiones anteriores a 3.9R0.0 incluyéndola, un atacante local con pocos privilegios puede enviar un comando al servicio que se ejecuta con NT AUTHORITY\SYSTEM indicándole que ejecute una configuración OpenVPN maliciosa resultando en una ejecución de código arbitrario con los privilegios del servicio

*Credits: Noam Moshe of Claroty reported this vulnerability to MB connect line GmbH. CERT@VDE coordinated.

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

2021-05-24 CVE Reserved
2021-08-02 CVE Published
2023-03-08 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-269: Improper Privilege Management

CAPEC

References (1)

URL	Tag	Source
https://cert.vde.com/de-de/advisories/vde-2021-017	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mbconnectline Search vendor "Mbconnectline"		Mbdialup Search vendor "Mbconnectline" for product "Mbdialup"				<= 3.9r0.0 Search vendor "Mbconnectline" for product "Mbdialup" and version " <= 3.9r0.0"		-		Affected