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Cyber Defence Lab
Fighting cyber threats through
research
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education
www.cylab.be
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Web shells and the dangers of unrestricted file upload
In previous blog posts, we have already illustrated two web application vulnerabilities: brute force login cracking and SQL injection. In this post we illustrate a 3rd vulnerability, unrestricted file upload, and show how it can be exploited using a web shell.
Crack a login page : the easy way
In this blog post, we will show that a login page from a web application can be easily cracked if the application does not implement specific protections against this kind of attack.
VirusTotal, what is it and what is it good for?
If you have ever been a bit paranoid about files you have received per mail, or you work in a sensitive environment, you have searched online for tools which can help you analyze a file and give you a detailed overview if it could be harmful or not. Virustotal is one of the more prominent online services, which offers a way to upload any suspicious files and analyze them.
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