Description
FFmpeg 2.x allows remote attackers to conduct cross-origin attacks and read arbitrary files by using the subfile protocol in an HTTP Live Streaming (HLS) M3U8 file, leading to an external HTTP request in which the URL string contains an arbitrary line of a local file.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | ffmpeg | 7:2.8.5-1 | — |
| Debian 13 | ffmpeg | 7:2.8.5-1 | — |
| Debian 12 | ffmpeg | 7:2.8.5-1 | — |
| Debian 8 | libav | 6:11.6-1~deb8u1 | DSA-3506-1 |
| Debian 7 | libav | 6:0.8.17-2 | DSA-3506-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | ffmpeg | 7:2.8.6-1ubuntu1 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libav | 6:9.20-0ubuntu0.14.04.1+esm1 | — |
Advisories 1
- DSA-3506-1 libav - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- openSUSE-SU-2016:0243 vendor-advisory
- 1034932 vdb-entry
- GLSA-201705-08 vendor-advisory
- 80501 vdb-entry
- USN-2944-1 vendor-advisory
- [oss-security] 20160114 Re: Fwd: FFmpeg: stealing local files with HLS+concat mailing-list
- SSA:2016-034-02 vendor-advisory
- DSA-3506 vendor-advisory
- http://habrahabr.ru/company/mailru/blog/274855
- GLSA-201606-09 vendor-advisory
- VU#772447 third-party-advisory