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Securing AngularJS Applications Sebastian Lekies (@slekies) Who Am I? Sebastian Lekies (@slekies) Senior Software Engineer at ➔ Tech Lead of the Web application security scanning team ➔ Google Internal Security Scanner & Cloud Security Scanner PhD Student at the University of Bochum ➔ Thesis topic: "Client-Side Web Application security" ➔ Interested in client-side attacks: XSS, ClickJacking, CSRF, etc. Agenda 1. Introduction a. What is Cross-Site Scripting? b. What is AngularJS? 2. Basic Angular Security Concepts a. Strict Contextual Auto Escaping b. The HTML Sanitizer 3. Common Security pitfalls a. Server-Side Template Injection b. Client-Side Template Injection c. Converting strings to HTML d. White- and Blacklisting URLs 4. Conclusion A quick introduction to Cross-Site Scripting (XSS)... - XSS is a code injection problem: <?php echo "<h1>Hello ".$_GET['username']."</h1>"; ?> A quick introduction to Cross-Site Scripting (XSS)... - Attacker model - Exploit: http://website.com/xss.php?username=<script>attackerCode</script> Browser www.website.com/xss.php?username=<script>attackerC... www.website.com Attacker User HTML + JS Link <script>attackerCode</script> Defending against Cross-Site Scripting (XSS)... Defending against XSS: Context-aware escaping and validation - HTML Context <?php echo "<h1>Hello ".htmlentities($_GET['username'])."</h1>"; ?> - Mixed Context: HTML + URI Context <?php echo "<a href = '".encodeForHTML(validateUri($_GET['uri']))."'>link</a>"; ?> (A brief) Introduction to AngularJS What is AngularJS? AngularJS is a client-side MVC/MVVM Web application framework… ● ...redefining the way client-side-heavy single page apps are written "Angular is what HTML would have been, had it been designed for applications" * ● Problem: HTML is great for static pages, but not so great for dynamic UIs ● Solution: Angular's declarative templating system with two-way data bindings * https://docs.angularjs.org/guide/introduction Introduction to Angular - Example Include the newest version of Angular... <script src="./angularjs/1.5.7/angular.min.js"></script> Introduction to Angular - Example Create a module... <script> var myApp = angular.module('myApp', []); </script> <body ng-app="myApp"> ... </body>

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Tech Lead of the Web application security scanning team. ➔ Google Internal AngularJS is a client-side MVC/MVVM Web application framework…

Securing AngularJS Applications PDF

52 Pages·2012·1.1 MB·English

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Tech Lead of the Web application security scanning team. ➔ Google Internal AngularJS is a client-side MVC/MVVM Web application framework…

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Author:	Unknown
Publication Year:	2012
Pages:	52
Language:	English
File Size:	1.1
Format:	PDF
Price:	FREE

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