What if XSS was a browser bug?

HIP - Track 1 - Room 5
Frederik Braun
Cross-Site Scripting (XSS) is still the most common security issue on the web - with no easy way to be prevented. The talk will provide the necessary background on XSS and where previous approaches failed. Then we will present the Sanitizer API, a new and upcoming browser API that solves this issue.
We’ll talk about mXSS and HTML parsing as background and then also explain why the XSS Auditor didn’t work (as a prime example of a browser-controlled XSS mitigation). Using examples from recent mXSS attacks against sanitizers, we are explaining the root cause of these issues and the solution: Parsing needs to be done within a context-element. Then we will explain how a built-in Sanitizer API can fill the existing gap and what it can and can not protect against, looking at more recent attacks like DOM Clobbering and script gadgets.

Additional information

Live Stream https://streaming.media.ccc.de/jev22/hip1
Type Talk/panel 45 min + 10 min Q&A (55 Minuten)
Language English

More sessions

12/27/22
Theater Hall - E.T.I. (HiP main stage)
pandzillophon
HIP - Track 1 - Room 5
We'll look at the role IT and software play in modern manufacturing, with a twist on the semiconductor industry. Since I'm a security guy, we'll mostly focus on the sorry state of that.
12/27/22
Theater Hall - E.T.I. (HiP main stage)
HIP - Track 1 - Room 5
Das US-Militär hat massenhaft Geräte zur biometrischen Erfassung von Menschen in Afghanistan genutzt. Einige Geräte wurden beim hastigen Abzug der NATO-Truppen zurückgelassen. Wir haben bei Analysen solcher Geräte große Mengen an biometrischen und weiteren personenbezogenen Daten gefunden. In den falschen Händen bedeuten diese Daten Lebensgefahr für Menschen in Afghanistan und Irak.
12/27/22
Track 2 Room 2
Anne Herpertz
HIP - Track 2 - Room 2
Nazis, Querdenken und andere verschwörungsideologische Aufmärsche - welche Möglichkeiten gibt es, in Einklang mit Versammlungsgesetzen und in Verhandlungen mit Polizei und Versammlungsbehörden legal zu blockieren? Ein How-To aus den Erfahrungen bei @QuerstellenDD.
12/27/22
Theater Hall - E.T.I. (HiP main stage)
Mate Soos
HIP - Track 1 - Room 5
In IT security we have been preoccupied with failures, with things that go wrong, and so we count the negatives -- the times when we failed. How about we seriously started counting the positives? More importantly, what if by adding more and more constraints to avoid the holes we have found, we are also removing the positive capacities in the system, thereby hurting our chance of success more than we hurt our chance of failure? In this talk, I will try to highlight how IT security could be done ...
12/27/22
Theater Hall - E.T.I. (HiP main stage)
Ilja van Sprundel
HIP - Track 1 - Room 5
The C programming language first appeared in 1972 and became enormously popular. It has this magical combination of features that allows developers to quickly write portable code that can be reused and easily ported to different architectures. It has been the foundation of most operating systems and systems programming in the past 50 years.
12/27/22
Theater Hall - E.T.I. (HiP main stage)
Matthias Monroy
HIP - Track 1 - Room 5
The "Enhanced Border Security Partnership" poses an unprecedented threat to civil liberties in Europe.
12/27/22
Theater Hall - E.T.I. (HiP main stage)
Thomas Fricke
HIP - Track 1 - Room 5
We summarize howto secure Kubernetes clusters in critical infrastructure and give insights from the machine rooms.