Cross site scripting (XSS) is a type of computer security vulnerability typically found in web applications, but in proposing defensive measures for cross site scripting the websites validate the user input and determine if they are vulnerable to cross site scripting. The major considerations are input validation and output sanitization.
There are lots of defense techniques introduced nowadays and even though the coding methods used by developers are evolving to counter attack cross site scripting techniques, still the security threat persist in many web applications for the following reasons:
• The complexity of implementing the codes or methods.
• Non-existence of input data validation and output sanitization in all input fields of the application.
• Lack of knowledge in identifying hidden XSS issues etc.
This proposed project report will briefly discuss what cross site scripting is and highlight the security features and defense techniques that can help against this widely versatile attack.
This document discusses cross-site scripting (XSS) attacks and defenses. It describes different types of XSS (persistent, non-persistent, DOM-based), how XSS attacks work, and examples of XSS injection vectors. It also provides recommendations for preventing XSS, including encoding output, sanitizing input, and using features like HttpOnly cookies.
Cross site scripting (XSS) is a type of computer security vulnerability typically found in web applications, but in proposing defensive measures for cross site scripting the websites validate the user input and determine if they are vulnerable to cross site scripting. The major considerations are input validation and output sanitization.
There are lots of defense techniques introduced nowadays and even though the coding methods used by developers are evolving to counter attack cross site scripting techniques, still the security threat persist in many web applications for the following reasons:
• The complexity of implementing the codes or methods.
• Non-existence of input data validation and output sanitization in all input fields of the application.
• Lack of knowledge in identifying hidden XSS issues etc.
This proposed project report will briefly discuss what cross site scripting is and highlight the security features and defense techniques that can help against this widely versatile attack.
This document discusses cross-site scripting (XSS) attacks and defenses. It describes different types of XSS (persistent, non-persistent, DOM-based), how XSS attacks work, and examples of XSS injection vectors. It also provides recommendations for preventing XSS, including encoding output, sanitizing input, and using features like HttpOnly cookies.
[CB16] Electron - Build cross platform desktop XSS, it’s easier than you thin...CODE BLUE
Electronは、WindowsやOS X、Linuxのデスクトップアプリケーションを簡単に作成するためのフレームワークであり、Atom EditorやVisual Studio Code、Slackといった人気アプリケーションの開発にも用いられている。ElectronはChromiumとnode.jsを内包することでWebアプリケーション開発者が慣れた手法でデスクトップアプリケーションを開発可能にしている反面、アプリケーション内にDOM-based XSSが一か所でも存在すると容易に任意コード実行が可能になるなどセキュリティ上の問題点も多数存在しており、事実、今日までに著名なElectron製アプリケーションにおいて任意コード実行が可能な脆弱性を多数発見・報告している。
本セッションでは、Electronを利用して開発する際に発生しやすいセキュリティ上の問題点を整理して理解することを目的にしている。
--- はせがわ ようすけYosuke Hasegawa
株式会社セキュアスカイ・テクノロジー常勤技術顧問。
Internet Explorer、Mozilla FirefoxをはじめWebアプリケーションに関する多数の脆弱性を発見。 Black Hat Japan 2008、韓国POC 2008、2010、OWASP AppSec APAC 2014他講演多数。
OWASP Kansai Chapter Leader / OWASP Japan Board member