Command Injection Affecting extra-ffmpeg package, versions *
Snyk CVSS
Attack Complexity
Low
Confidentiality
High
Threat Intelligence
Exploit Maturity
Proof of concept
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Test your applications- Snyk ID SNYK-JS-EXTRAFFMPEG-607911
- published 20 Aug 2020
- disclosed 20 Aug 2020
- credit d3lla
How to fix?
A fix was pushed into the master branch but not yet published.
Overview
extra-ffmpeg is a Decode, encode, transcode, mux, demux, stream, filter, and play media through machine (via "ffmpeg").
Affected versions of this package are vulnerable to Command Injection. It is possible to inject arbitrary commands due to insecure command formatting. User input inserted as part of the os parameter is passed to the child_process.exec function without any check.
PoC
const ffmpeg = require('extra-ffmpeg');
ffmpeg.sync([{y: true}, {i: '`touch HACKED`'}, {acodec: 'copy', o: 'aud.mp3'}]);