Zero-Day Advisory

Fortinet Discovers VLC Media Player mp4 File 'trun' Atom Handling NULL Pointer Dereference Vulnerability

Summary

Fortinet's FortiGuard Labs has discovered a null pointer dereference vulnerability in VLC media player.
VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVDs, Audio CDs, VCDs, and various streaming protocols.
The null pointer dereference vulnerability exists due to insufficiently sanitizing the value of the 'size' field in atom 'trun' when parsing 'traf' atoms in a mp4 file.

Solutions

FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:

VLC.Media.Player.mp4.trun.Atom.NULL.Pointer.Dereference
Released May 01, 2015
Users should apply the solution provided by VideoLAN.

Additional Information

The vulnerability was fixed in version 2.2.2.

Acknowledgement

This vulnerability was discovered by Kai Lu 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.