GStreamer contains gst-rtsp-server, an open-source library that allows the user to build RTSP servers. A specially crafted RTSP setup request can cause a null pointer deference, resulting in a denial of service. An attacker can send a malicious packet to trigger this vulnerability. The following SNORT rules will detect exploitation attempts. For the most current rule information, please refer to your Firepower Management Center or Snort.org. The following rules will be released at a future date.”]
Source: https://blog.talosintelligence.com/2020/03/vuln-spotlight-Gstreamer-DoS-March-2020.html