The read_header function in libavcodec/ffv1dec.c in FFmpeg 2.4 and 3.3.4 and possibly earlier allows remote attackers to have unspecified impact via a crafted MP4 file, which triggers an out-of-bounds read.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-15672.json"