CVE-2021-33526: Privilege escalation in mbDIALUP <= 3.9R0.0
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 Software
Remediation
Information
Event History
Frequently Asked Questions
What is the vulnerability ID?
The vulnerability ID is CVE-2021-33526.
What is the severity of CVE-2021-33526?
The severity of CVE-2021-33526 is high with a CVSS score of 7.8.
Which software versions are affected by CVE-2021-33526?
MB connect line mbDIALUP versions up to and including 3.9R0.0 are affected by CVE-2021-33526.
How can a low privileged local attacker exploit CVE-2021-33526?
A low privileged local attacker can send a command to the service running with NT AUTHORITY\SYSTEM instructing it to execute a malicious OpenVPN configuration, resulting in arbitrary code execution with the privileges of the service.
Is there a fix available for CVE-2021-33526?
It is recommended to update to a version of MB connect line mbDIALUP that is not affected by CVE-2021-33526. Please refer to the vendor's website or contact their support for more information.