File Upload Vulnerabilities

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prerequisites
intermediate Java • basics of Spark • basic debugging
skills learned
identifying implementation vulnerabilities • remediating Java code vulnerabilities • testing functionality with Postman
Sashank Dara
1 week · 6-8 hours per week · BEGINNER
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Look inside
In this liveProject, you’ll tackle the kind of file upload vulnerabilities that allow attackers to upload huge amounts of junk data, overwrite existing files, or even deploy a virus. It is vitally important to test and validate the file upload capabilities in your API implementations. You’ll investigate the bugs that might be causing these issues, and then apply a code-level fix.

This liveProject was implemented by Natan Streppel.
This project is designed for learning purposes and is not a complete, production-ready application or solution.

project author

Sashank Dara

Sashank Dara received his PhD in cybersecurity from IIIT-Bangalore in the area of applied cryptography and threat intelligence. He’s an expert cybersecurity technologist with more than 17 years of experience in the field, including as a consultant advisor for Manipal Global Education Services’ cybersecurity programs and as a security technology and strategy advisor for security startups including Appknox, Haltdos, and SecurityJourney.com. He remains a trusted information security consultant and advisor for top companies in EdTech, IT/ITes, academia, and real estate. He’s the co-inventor of 5 U.S. patents (and 3 IETF drafts) in the areas of cloud, SDN, and NFV security, and he’s published more than a dozen research papers at IEEE, LNCS conferences in the areas of cloud security, privacy, cryptography, and threat intelligence. A prolific speaker at security conferences and invited talks, Dara is currently the CTO and co-founder of Seconize, an award-winning cybersecurity startup pioneering a cyber risk and compliance management SaaS product suite.

prerequisites

The liveProject is for Java programmers familiar with basic REST API development. To begin this project you will need to be familiar with:

TOOLS
  • Intermediate level Java (classes, objects)
  • Basics of Spark (GET and POST handlers)
  • Basics of SQL and JDBC (how to read SQL and perform queries)
  • Basics of Linux and performing commands from the command line
  • Java IDEs such as Eclipse or IntelliJ IDEA
  • Testing APIs, using Postman
  • Gradle
  • Docker
  • GIT
TECHNIQUES
  • Basic Debugging
  • Code Reviews
  • Code Refactoring
  • Unit Testing

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