Thesis: Finding vulnerabilities in the implementation of an Open Source RAN protocol by fuzz testing

Göteborg, SE
den 19 oktober 2021
den 11 november 2021
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Come, and be where it begins.

Our Exciting Opportunity


The telecom industry is moving towards open designs and open networking protocols, where once equipment could be expected to be delivered and integrated by the same manufacturer now a radio access network (RAN) could consist of equipment delivered by different vendors.

This places even higher requirements on integration- and security testing since malicious actors may now to a greater extent try to exploit the implementations.

Fuzz testing is a well-known industry practice that can be used to randomize input to a program and find bugs and vulnerabilities that may be very difficult to find using other methods. Today there exist commercial tools that can perform fuzz testing for widespread protocols such as SSL/TLS and NETCONF, but for our lesser-known protocol, no such tool exists.

The thesis

In this thesis, we want to create a fuzz testing tool to explore what bugs can be found that would be difficult to find using unit testing or manual system verification.

The students can base their fuzzing tool on an already existing in-house simulator of this protocol.

Questions to answer
  • What type of fuzzer is best used for this protocol?
  • How effective is fuzzing compared to traditional system verification?
  • Depending on the outcome of using the tool can suggestions be made on how to improve the protocol to make it less susceptible to attacks?
  • How should a tool like this be designed to make sure it can be effectively maintained and used for future protocol versions?


  • Student in the 2nd year of your master program with a background in software engineering or computer science
  • Knowledge of C++ programming language

What´s in it for you?

Here at Ericsson, our culture is built on over a century of courageous decisions. With us, you will no longer be dreaming of what the future holds - you will be redefining it! You won't develop for the status quo, but will build what replaces it. Joining us is a way to move your career in any direction you want; with hundreds of career opportunities in locations all over the world, in a place where co-creation and collaboration are embedded into the walls. You will find yourself in a speak-up environment where empathy and humanness serve as cornerstones for how we work, and where work-life balance is a priority. Welcome to an inclusive, global company where your opportunity to make an impact is endless!

What happens once you apply?

To prepare yourself for next steps, please explore here:

Location for this role: Gothenburg, Sweden


Last day to apply: 10th November

Kindly note that we cannot process applications sent via email.

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Primary country and city: Sweden (SE) || || Göteborg || [[mfield2]]

Req ID: 608703

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