ffmpeg is vulnerable to Denial Of Service (DoS). The aa_read_header in libavformat/aadec.c in FFmpeg before 3.2.14 and 4.x before 4.1.4 does not check for sscanf failure and consequently allows use of uninitialized variables.
www.securityfocus.com/bid/109317
git.ffmpeg.org/gitweb/ffmpeg.git/commit/9b4004c054964a49c7ba44583f4cee22486dd8f2
git.ffmpeg.org/gitweb/ffmpeg.git/shortlog/n4.1.4
github.com/FFmpeg/FFmpeg/commit/ed188f6dcdf0935c939ed813cf8745d50742014b
github.com/FFmpeg/FFmpeg/compare/a97ea53...ba11e40
seclists.org/bugtraq/2019/Aug/30
security.gentoo.org/glsa/202003-65
usn.ubuntu.com/4431-1/
www.debian.org/security/2019/dsa-4502