SaferVPN for Windows

Privilege Escalation

VENDOR

Safer Social Ltd

PRODUCT

SaferVPN

Product version

4.2.5

Vulnerability Details

SaferVPN for Windows suffers from a SYSTEM privilege escalation vulnerability in its SaferVPN.Service service. The SaferVPN.Service service executes openvpn.exe using OpenVPN config files located within the current user's local application data directory i.e. \AppData\Local\SaferVPN\OvpnConfig\. An authenticated attacker may modify these configuration files to 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.

Vendor response

A release is scheduled

Disclosure timeline

04-09-2018 - Vendor disclosure via email
04-09-2018 - Vendor notified via Facebook
04-10-2018 - Vendor response via email: Reviewing
04-18-2018 - Vendor followup
04-20-2018 - Vendor response: A release is scheduled that resolves this issue
05-01-2018 - Vendor notified of the advisory release

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