A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because...

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.

出典: OSV.dev (Open Source Vulnerabilities) OSV

影響パッケージ

Debian:12 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.1.3-1"}]}]

Debian:13 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.1.3-1"}]}]

Debian:14 ffmpeg

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.1.3-1"}]}]

参照URL

advisory security-tracker.debian.org