Fortinet Discovers Steganos Online VPN Shield DLL PreLoading Vulnerability
Fortinet's FortiGuard Labs has discovered a DLL preloading vulnerability in Steganos Online VPN Shield for Windows.
Steganos Online VPN Shield for Windows is a Virtual Private Network product to protect a user's identity and personal privacy using their anonymous VPN and proxy services. It allows users to anonymize all their online activities.
Steganos Online VPN Shield for WIndows is susceptible to a DLL preloading vulnerability. The issue occurs when the application looks to load a DLL for execution and an attacker provides a malicious DLL to use instead. The application generally follows a specific search path to locate the DLL. The vulnerability can be exploited by a simple file write (or potentially an over-write) which results in a foreign DLL running under the context of the application.
Users should apply the solution provided by Steganos.
Fortinet reported the vulnerability to Stegnos on May 21, 2018.
Steganos confirmed the vulnerability on July 13, 2018.
Steganos released patch for it on September 28, 2018.