Zero-Day Advisory

Fortinet Discovers Sony SmartTV Vulnerabilities

Summary

Fortinet's FortiGuard Labs has discovered a remote code execution in Photo Sharing app on Sony Smart TV.

BRAVIA is a brand of Sony Visual Products Inc. a wholly owned subsidiary of Sony Corporation, and used for its television products. Photo Sharing Plus is unique feature of the BRAVIA TV, it allows customers to connect, view, and save favorite photos, videos, and songs on the TV using devices such as smartphones or tablets.

The vulnerability is due to insufficient validation of user input in the Photo Sharing Plus web application. As a result, it can lead to arbitrary code execution upon successful exploitation when the specifically crafted requests are sent to the service.


Solutions

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

Sony.SmartTV.Remote.Code.Execution
Released Aug 29, 2018
Users should apply the patch provided by Sony.

Timeline

Fortinet reported the vulnerability to Sony on 27/03/2018.

Sony confirmed the vulnerability on 03/04/2018.

Sony published advisory about the patch on 30/08/2018.

Acknowledgement

This vulnerability was discovered by Tony Loi 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.