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Cannot upload PNG image due to iexssprotect
theoveenker #1
Member since Sep 2017 · 8 posts
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Subject: Cannot upload PNG image due to iexssprotect
Hi all,

I'm running Greebo and it all works fine. I have the default mime.conf installed.

I was trying to replace a screenshot (PNG) on my wiki and suddenly got the dreaded "The upload was blocked for possibly malicious content.".

It turned out I could upload any other PNG image, but not the one I needed. Even after recreating the screenshot it did not work. After some research I found out (using the strings tool) that the PNG file contained the sequence <A which made media_contentcheck() trigger a -3 error.

I guess I can get around it by turning off iexssprotect, but wouldn't it be better if media_contentcheck() first checked mime times to see if the file is text or a valid binary image instead of first assuming it is a text file?

What can I do to upload my image other than turning off iexssprotect?

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