File upload means sending a file from a local system to a remote system such as a server or another client with the intent that the remote system should store a copy of the file being transferred.

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Security concerns with uploading an image

We have to implement a user profile image upload feature in our web application. The user can upload his profile image. After uploading the image, it will be saved to a DB2 DB, and it will be ...
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Why would someone upload many iptables files during a security breach and are they a cause for concern?

My workplace had multiple unauthorized access security failures over the last month. Since then, most computers have been scrubbed and user accounts purged. Data was recovered from offsite backups and ...
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Simple method requiring no installation of special tools to share a file over the internet

I have searched for related topics, but found other existing answers to not be satisfactory, because they require installing special tools. This is a very common use case. For example, I want to ...
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How to remotely upload a file on linux and windows (without netcat or ssh)

With meterpreter from metasploit, there is an option (windows or linux victim) to upload files on the victim device. I searched in the metasploit-framework in order to find the script that does the ...
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Potential security issues in a two-part upload process

I use a pre-signed URL approach for uploading files to a private S3 bucket. A CloudFront distribution is configured to use this bucket as the source. The upload process is only available to ...
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Securing server from attacks and linking while allowing users to upload and store personal files?

I have read some questions and answers about uploading images specifically: Have I done enough not be compromised through image uploading Risks of a php image upload form Uploading images safe of ...
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38 views

JSP shell in the image on Tomcat

I have the server running Tomcat/7.0.52 under Ubuntu. I'm trying to create an image with JSP shell. I wrote the shell like this: <%@ page import="java.io.*" %> <%@ page import="java.util.*" ...
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22 views

What are good templates for an Image Upload policy?

I'm building a collaborative directory for events, where users and events will have their public profiles, each one with at least a main picture. For users, that picture may come from their social ...
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69 views

Is sharing with Direct Connect DC++ secure?

As I have some useful software that I want to share with friends and I don't like to get involved with torrents, DC++ (P2P client for sharing and chatting) seems a good way to do it, but I'm not sure ...
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Verify which file a request to the server originated from

In order to make my question clear I will give a practical scenario. Lets say I have a server where I allow people to upload a script and allot them part of my drive, the script can make requests to ...
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134 views

Bypassing Change Name Uploader

I have read all of the questions available on SE about bypassing the change name uploader. Consider an uploader which changes the file name each time you try to upload a file. The only allowed formats ...