Privilege escalation in mbDIALUP <= 3.9R0.0
CVE-2021-33526

7.8HIGH

Key Information:

Vendor

Mb Connect Line

Status
Mbdialup
Vendor
CVE Published:
2 August 2021

What is CVE-2021-33526?

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.

Affected Version(s)

mbDIALUP 3.9R0.0

References

https://cert.vde.com/de-de/advisories/vde-2021-017
x_refsource_CONFIRM

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Noam Moshe of Claroty reported this vulnerability to MB connect line GmbH. CERT@VDE coordinated.
.
CVE-2021-33526 : Privilege escalation in mbDIALUP <= 3.9R0.0