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Welcome to the full schedule of the OWASP AppSec Research EU 2014 conference days
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Thursday, June 26 • 12:05 - 12:50
25 Million Flows Later – Large-scale Detection of DOM-based XSS

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In recent years, the Web witnessed a move towards sophisticated client-side functionality. This shift caused a significant increase in complexity of deployed JavaScript code and thus, a proportional growth in potential client-side vulnerabilities, with DOM-based Cross-site Scripting being a high impact representative of such security issues.

In this paper, we present a fully automated system to detect and validate DOM-based XSS vulnerabilities, consisting of a taint-aware JavaScript engine and corresponding DOM implementation as well as a context-sensitive exploit generation approach. Using these components, we conducted a large-scale analysis of the Alexa top 5000. In this study, we identified 6167 unique vulnerabilities distributed over 480 domains, showing that 9,6% of the examined sites carry at least one DOM- based XSS problem.

Speakers
avatar for Martin Johns

Martin Johns

Research Expert, SAP SE
Dr. Martin Johns is a Research Expert in the Product Security Research unit within SAP SE, where he leads the Web application security team. Furthermore, he serves on the board of the German OWASP chapter. Before joining SAP, Martin studied Mathematics and Computer Science at the Universities of Hamburg, Santa Cruz (CA), and Passau. During the 1990ties and the early years of the new millennium he earned his living as a software engineer in... Read More →
SL

Sebastian Lekies

Sebastian Lekies is a PhD candidate at SAP and the University of Bochum. His main field of research is Web application security.  Thereby, he mainly focuses on client-side Web attacks such as Cross-Site Scripting, ClickJacking, DNS-Rebinding, Cross-Site Request Forgery, etc.  He regularly publishes his work at academic and non-academic security conferences such as CCS, Usenix Security, Blackhat, OWASP Appsec, Deepsec, etc.


Thursday June 26, 2014 12:05 - 12:50
LAB002
  • Company 58

Attendees (11)