We are currently developing a web app that allows users to upload files to act as attachments to information they provide. Obviously allowing users to upload any file types is very dangerous, ...
I came across this advisory recently and I'm a bit confused by both exploits, but specifically the file upload vulnerability. I don't understand how to actually exploit this condition (or even why ...
I want my users to be able to upload a photo. Currently I am not checking the uploaded photo for problems of any kind, although I do limit the size to 32k. Is there any way for me to check uploaded ...
There is image upload function in web application. After image is uploaded, it's resized using functions from PHP GD like imagecopyresampled and others. Before invocation of PHP GD's functions there ...
Some answers mention that it's possible to inject attacker-controlled HTML into images and therefore provoke XSS. I guess that this HTML will be processed by browser only if hole exists in browser. ...
My website will be hosting documents for end users and I would like to make this as secure as possible. Question Assuming that I have a need to share documents on a website that may contain hostile ...
I have a site, where people can upload graphics, you might think of it like an image hoster or a forum for pictures. Now, I allow upload of raster graphics to a certain size, but no vector graphics ...