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XSSER: From XSS to RCE 3.0
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Hans-Michael Varbaek
March 28, 2019
Technology
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XSSER: From XSS to RCE 3.0
OWASP Copenhagen
Hans-Michael Varbaek
March 28, 2019
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Transcript
XSSER: From XSS to RCE 3.0 OWASP Copenhagen Chapter 28
March 2019
About me ➢ ISP Red Team – Copenhagen ➢ Presented
at Black Hat Europe, Kiwicon, Hack in the Box, etc. ➢ Full-time security consultant career began in Sydney, Australia
Shodan: port:80
How many web servers globally? ➢ 85 million approximately (Shodan
– Port:80) How many of them run PHP? ➢ 8.1 million approximately (Shodan – PHP) However..
What about virtual hosting? ➢ 1.4 billion websites ➢ 232
million unique domains ➢ 27 million websites running WordPress That’s a lot more attack surface for adversaries (Netcraft March 2019 Survey)
Classic XSS Attacks ➢ Cookie Stealing ➢ Prevented by “HttpOnly”
flag ➢ Defacements ➢ Phishing ➢ Session Hijacking (e.g. BeEF, XSSER, etc.)
None
None
None
None
XSSER
XSSER What and why? ➢ Can automate XSS attacks to
obtain RCE ➢ Meant for educational purposes ➢ Fully open source and available on GitHub
Demo
References https://github.com/Varbaek/xsser https://shodan.io https://news.netcraft.com/archives/cat egory/web-server-survey/
Questions?