7
votes
3answers
1k views

Is there a way to bypass Django's XSS escaping with “unicode”?

Django (the Python web framework) escapes output to prevent XSS (Cross Site Scripting) attacks. It replaces ', ", <, >, & with their HTML safe versions. However this presentation on slide ...
3
votes
2answers
211 views

How to defend against invalid UTF7/8 that hides a <script> tag?

I'm scanning HTML before it reaches a browser, and I've just heard about a type of exploit that uses invalid UTF7 or UTF8 sequences to embed an otherwise invisible script tag, which is used to execute ...