RSS Feed/News XFMG\VideoInfo\Preparer::fromStream() infinite-recurses on mdat with size 0, OOM-killing SyncAttachmentMirror

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Reputation:

Guys please fix this. It's been around for ages. It drives me bananas. I

Affected version
XenForo Media Gallery (version as installed — check Admin > Add-ons)
XenForo 2.3.x

Summary

XFMG\VideoInfo\Preparer::fromStream() enters unbounded recursion on any MP4/MOV containing a top-level box with a declared size of 0, exhausting the PHP memory limit regardless of how high that limit is set.

A box size of 0 is legal per ISO/IEC 14496-12 and means "this box extends to the end of...

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