TunnelBear up to 3.2.0.6 on Windows TunnelBearMaintenance Service OpenVPNConnect access control

Summaryinfo

A vulnerability was found in TunnelBear up to 3.2.0.6 on Windows. It has been declared as critical. This affects the function OpenVPNConnect of the component TunnelBearMaintenance Service. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2018-10381. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in TunnelBear up to 3.2.0.6 on Windows and classified as critical. This vulnerability affects the function OpenVPNConnect of the component TunnelBearMaintenance Service. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

TunnelBear 3.2.0.6 for Windows suffers from a SYSTEM privilege escalation vulnerability through the "TunnelBearMaintenance" service. This service establishes a NetNamedPipe endpoint that allows arbitrary installed applications to connect and call publicly exposed methods. The "OpenVPNConnect" method accepts a server list argument that provides attacker control of the OpenVPN command line. An attacker can specify a dynamic library plugin that should run for every new VPN connection attempt. This plugin will execute code in the context of the SYSTEM user.

The bug was discovered 04/28/2018. The weakness was published 04/26/2018 (Website). The advisory is available at github.com. This vulnerability was named CVE-2018-10381 since 04/25/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 371009 (TunnelBear Privilege Escalation Vulnerability).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• TunnelBear

Version

• 3.2.0.0
• 3.2.0.1
• 3.2.0.2
• 3.2.0.3
• 3.2.0.4
• 3.2.0.5
• 3.2.0.6

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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