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Simon Willison’s Weblog

2 items tagged “uploads”

Django File Uploads (via) Nearly two years in the making, Django’s file upload capacity has received a major (and backwards incompatible) upgrade. Previously, files were uploaded by default in to RAM—now, files larger than 2.5MB are streamed to a temporary file and extensive hooks are provided to customise where they end up—streaming to S3, for example. 8 1st July 2008, 5 pm

Evil GIFs: Partial Same Origin Bypass with Hybrid Files. First there were PNGs that had crossdomain.xml files embedded in them, now there are GIFs that contain Java applets (as JAR files). At this point I’d say don’t even bother trying to validate uploaded files, just make sure they’re served off an entirely different domain instead where XSS doesn’t matter. 12 1st July 2008, 8:58 am

A django site