Indian researchers have discovered a flaw in WhatsApp that allows anyone to remotely crash the popular mobile app by sending a specially crafted message. The bug is really worrying because in order to restore a normal operation, the targeted user will have to delete his whole conversation and start a new chat session. The vulnerability was reported by two Indian security researchers that contacted the colleagues at The Hacker News. They reproduce the exploitation of the vulnerability in the WhatsApp Message Handler. The hackers have published a video PoC in which is demonstrated that a 2000 words (2kb in size) message in a special character set is possible to cause the crash.”]
Source: https://securityaffairs.co/wordpress/30700/hacking/crashing-whatsapp-with-message.html