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| author | Roman Arutyunyan <arut@nginx.com> | 2024-10-22 18:34:13 +0400 |
|---|---|---|
| committer | Roman Arutyunyan <arutyunyan.roman@gmail.com> | 2024-11-21 16:08:48 +0400 |
| commit | 569948aa12409773f27572fca3d2c8e18c9c657f (patch) | |
| tree | 49aced3b31d85a80a7670ffae0445d49f3c1cc2e /src/stream/ngx_stream_ssl_module.c | |
| parent | d1a02451c3c5767b5d0f23e138db98a9f7801335 (diff) | |
| download | nginx-569948aa12409773f27572fca3d2c8e18c9c657f.tar.gz nginx-569948aa12409773f27572fca3d2c8e18c9c657f.zip | |
Mp4: prevent chunk index underflow.
When cropping stsc atom, it's assumed that chunk index is never 0.
Based on this assumption, start_chunk and end_chunk are calculated
by subtracting 1 from it. If chunk index is zero, start_chunk or
end_chunk may underflow, which will later trigger
"start/end time is out mp4 stco chunks" error. The change adds an
explicit check for zero chunk index to avoid underflow and report
a proper error.
Zero chunk index is explicitly banned in ISO/IEC 14496-12, 8.7.4
Sample To Chunk Box. It's also implicitly banned in QuickTime File
Format specification. Description of chunk offset table references
"Chunk 1" as the first table element.
Diffstat (limited to 'src/stream/ngx_stream_ssl_module.c')
0 files changed, 0 insertions, 0 deletions