At startup the innovaphone IP222 sends an HTTP request for a special PNG file to the involved server system. After the download has finished, the image is displayed on the phone by selecting the receiver screen in the menu. Providing a large image file (6.9 MB) within the download process and selecting the receiver screen on the phone will lead to a crash of the application and cause a denial of service condition. Remote code execution via this security vulnerability may also be possible, but was not confirmed by the SySS GmbH. Continue reading...
