CVE-2023-6601: Ffmpeg: hls unsafe file extension bypass in ffmpeg
First published: Wed Dec 06 2023(Updated: )
A flaw was found in FFmpeg's HLS demuxer. This vulnerability allows bypassing unsafe file extension checks and triggering arbitrary demuxers via base64-encoded data URIs appended with specific file extensions.
Credit: patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FFmpeg | >=2.0<6.0 | |
| FFmpeg | >=3.0<5.0 | |
| FFmpeg | >=4.2<6.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=2253172
- http://localhost:8000/secret
- http://www.dashif.org/guidelines/low-latency-live-v5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266129
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266128
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266131
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266130
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266132
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2266133
Frequently Asked Questions
What is the severity of CVE-2023-6601?
CVE-2023-6601 is considered a critical vulnerability due to the potential for arbitrary code execution through unsafe file extension checks.
How do I fix CVE-2023-6601?
To fix CVE-2023-6601, update FFmpeg to version 6.0 or higher, or apply relevant patches provided by the FFmpeg maintainers.
What versions of FFmpeg are affected by CVE-2023-6601?
CVE-2023-6601 affects FFmpeg versions from 2.0 up to, but not including, 6.0, particularly versions 3.0 to 6.0.
What type of attacks can exploit CVE-2023-6601?
CVE-2023-6601 can be exploited to bypass file extension checks and execute arbitrary demuxers, potentially leading to code execution.
Is there a workaround for CVE-2023-6601?
Currently, the most effective workaround for CVE-2023-6601 is to refrain from using affected versions of FFmpeg until an update is applied.
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