ffmpeg is a "cross-platform solution to record, convert and stream audio and video". ffmpeg is vulnerable to local file disclosure due to improper enforcement of domain restrictions when processing playlist files.
CWE-201: Information Exposure Through Sent Data - CVE-2016-1897, CVE-2016-1898
When a user opens a maliciously crafted playlist file in ffmpeg, ffmpeg will query a server for remote data. By carefully crafting the playlist, an attacker can cause ffmpeg to request internet URIs that expose file:// content from the victim's machine. CVE-2016-1897 refers to an issue with processing playlists that use concatenations, while CVE-2016-1898 refers to a related issue with subfiles.
By causing a specially-crafted playlist file to be processed with ffmpeg or Libav, a remote attacker may acquire file contents from a vulnerable system. In some circumstances, this may occur without explicit user interaction (such as the creation of a thumbnail preview by a file manager).
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Red Hat, Inc.
DragonFly BSD Project
F5 Networks, Inc.
Hewlett Packard Enterprise
QNX Software Systems Inc.
Slackware Linux Inc.
This vulnerability was publicly disclosed by Maxim Andreev.
This document was written by Garret Wassermann and Will Dormann.