Arch Linux Security Advisory ASA-202007-4 ========================================= Severity: High Date : 2020-07-31 CVE-ID : CVE-2020-13904 Package : ffmpeg Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1180 Summary ======= The package ffmpeg before version 2:4.3.1-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 2:4.3.1-1. # pacman -Syu "ffmpeg>=2:4.3.1-1" The problem has been fixed upstream in version 4.3.1. Workaround ========== None. Description =========== A use-after-free via a crafted EXTINF duration in an m3u8 file has been found in ffmpeg <= 4.2.3, because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in libavformat/format.c Impact ====== An attacker can execute arbitrary code on the affected host via crafted multimedia content. References ========== https://trac.ffmpeg.org/ticket/8673 https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200529033905.41926-1-lq@... https://security.archlinux.org/CVE-2020-13904