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Hello! In todayamp;#39;s episode of Bug Bounty Reports Explained I will show how it was possible to send a malicious GIF image in WhatsApp that could take control over whole Android smartphone. The video is based on an article by a guy named Awakened. Link, as always is in the description. Low-level bug is something new on my channel and I hope you will enjoy that! Letamp;#39;s start with a GIF file. It contains multiple images and when those frames are being shown one after another, they create an animation. Usually, during such animation, frames have the same size. However, this is not enforced by GIF specification. Frames can have different sizes, including frames of size 0. This is the structure used to store information about GIFs from native Android library. Most important for us is the rasterBits buffer. Itamp;#39;s where decoded frames are being stored. In a typical GIF where all frames have the same size, this buffer is just reused. However, when width or height of a new fr