Zero-Day Advisory

Fortinet Discovers Intel Media Server Studio DLL Pre-Loading Vulnerability


Fortinet's FortiGuard Labs has discovered a DLL preloading vulnerability in Intel's Media Server Studio.

Intel Media Server Studio is a software development tool suite for transcoding live, over-the-top broadcasting, and streaming video, as well as for cloud gaming, virtual desktop infrastructure (VDI), and video conferencing. It provides state-of-the-art components and features for tailoring visual quality versus performance. These components include Intel Media SDK, Intel SDK for OpenCL applications, as well as runtimes, graphics drivers, and advanced analysis tools.

Intel's Media Server Studio 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.


No vendor patch is available.


Fortinet reported the vulnerability to Intel on May 18, 2017.

Intel confirmed the vulnerability on July 19, 2018.


This vulnerability was discovered by Kushal Arvind Shah of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.