Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=720

There is a heap overflow in the Zlib codecs used when playing flv files in flash. Sample flv files are attached. Load http://127.0.0.1/LoadMP42.swf?file=smalloverflow.flv to reproduce.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39609.zip