📁 PHP Dosya Yöneticisi
/
/
home
/
demodesigncom
/
takiaksesuar.demodesign.com.tr
/
vendor
/
voku
/
anti-xss
/
build
/
docs
📝
base.md
← Geri Dön
[](https://github.com/voku/anti-xss/actions) [](http://codecov.io/github/voku/anti-xss?branch=master) [](https://www.codacy.com/app/voku/anti-xss) [](https://packagist.org/packages/voku/anti-xss) [](https://packagist.org/packages/voku/anti-xss) [](https://packagist.org/packages/voku/anti-xss) [](https://www.paypal.me/moelleken) [](https://www.patreon.com/voku) # :secret: AntiXSS "Cross-site scripting (XSS) is a type of computer security vulnerability typically found in Web applications. XSS enables attackers to inject client-side script into Web pages viewed by other users. A cross-site scripting vulnerability may be used by attackers to bypass access controls such as the same origin policy. Cross-site scripting carried out on websites accounted for roughly 84% of all security vulnerabilities documented by Symantec as of 2007." - http://en.wikipedia.org/wiki/Cross-site_scripting ### DEMO: [http://anti-xss-demo.suckup.de/](http://anti-xss-demo.suckup.de/) ### NOTES: 1) Use [filter_input()](http://php.net/manual/de/function.filter-input.php) - don't use GLOBAL-Array (e.g. $_SESSION, $_GET, $_POST, $_SERVER) directly 2) Use [html-sanitizer](https://github.com/tgalopin/html-sanitizer) or [HTML Purifier](http://htmlpurifier.org/) if you need a more configurable solution 3) Add "Content Security Policy's" -> [Introduction to Content Security Policy](http://www.html5rocks.com/en/tutorials/security/content-security-policy/) 4) DO NOT WRITE YOUR OWN REGEX TO PARSE HTML! 5) READ THIS TEXT -> [XSS (Cross Site Scripting) Prevention Cheat Sheet](https://github.com/OWASP/CheatSheetSeries/blob/master/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.md) 6) TEST THIS TOOL -> [Zed Attack Proxy (ZAP)](https://github.com/zaproxy/zaproxy) ### Install via "composer require" ```shell composer require voku/anti-xss ``` ### Usage: ```php use voku\helper\AntiXSS; require_once __DIR__ . '/vendor/autoload.php'; // example path $antiXss = new AntiXSS(); ``` Example 1: (HTML Character) ```php $harm_string = "Hello, i try to <script>alert('Hack');</script> your site"; $harmless_string = $antiXss->xss_clean($harm_string); // Hello, i try to alert('Hack'); your site ``` Example 2: (Hexadecimal HTML Character) ```php $harm_string = "<IMG SRC=javascript:alert('XSS')>"; $harmless_string = $antiXss->xss_clean($harm_string); // <IMG > ``` Example 3: (Unicode Hex Character) ```php $harm_string = "<a href=' javascript:alert(1)'>CLICK</a>"; $harmless_string = $antiXss->xss_clean($harm_string); // <a >CLICK</a> ``` Example 4: (Unicode Character) ```php $harm_string = "<a href=\"\u0001java\u0003script:alert(1)\">CLICK<a>"; $harmless_string = $antiXss->xss_clean($harm_string); // <a >CLICK</a> ``` Example 5.1: (non Inline CSS) ```php $harm_string = '<li style="list-style-image: url(javascript:alert(0))">'; $harmless_string = $antiXss->xss_clean($harm_string); // <li > ``` Example 5.2: (with Inline CSS) ```php $harm_string = '<li style="list-style-image: url(javascript:alert(0))">'; $antiXss->removeEvilAttributes(array('style')); // allow style-attributes $harmless_string = $antiXss->xss_clean($harm_string); // <li style="list-style-image: url(alert(0))"> ``` Example 6: (check if an string contains a XSS attack) ```php $harm_string = "\x3cscript src=http://www.example.com/malicious-code.js\x3e\x3c/script\x3e"; $harmless_string = $antiXss->xss_clean($harm_string); // $antiXss->isXssFound(); // true ``` Example 7: (allow e.g. iframes) ```php $harm_string = "<iframe width="560" onclick="alert('xss')" height="315" src="https://www.youtube.com/embed/foobar?rel=0&controls=0&showinfo=0" frameborder="0" allowfullscreen></iframe>"; $antiXss->removeEvilHtmlTags(array('iframe')); $harmless_string = $antiXss->xss_clean($harm_string); // <iframe width="560" height="315" src="https://www.youtube.com/embed/foobar?rel=0&controls=0&showinfo=0" frameborder="0" allowfullscreen></iframe> ``` ### Unit Test: 1) [Composer](https://getcomposer.org) is a prerequisite for running the tests. ``` composer install ``` 2) The tests can be executed by running this command from the root directory: ```bash ./vendor/bin/phpunit ``` ## AntiXss methods %__functions_index__voku\helper\AntiXSS__% %__functions_list__voku\helper\AntiXSS__% ### Support For support and donations please visit [Github](https://github.com/voku/anti-xss/) | [Issues](https://github.com/voku/anti-xss/issues) | [PayPal](https://paypal.me/moelleken) | [Patreon](https://www.patreon.com/voku). For status updates and release announcements please visit [Releases](https://github.com/voku/anti-xss/releases) | [Twitter](https://twitter.com/suckup_de) | [Patreon](https://www.patreon.com/voku/posts). For professional support please contact [me](https://about.me/voku). ### Thanks - Thanks to [GitHub](https://github.com) (Microsoft) for hosting the code and a good infrastructure including Issues-Managment, etc. - Thanks to [IntelliJ](https://www.jetbrains.com) as they make the best IDEs for PHP and they gave me an open source license for PhpStorm! - Thanks to [Travis CI](https://travis-ci.com/) for being the most awesome, easiest continous integration tool out there! - Thanks to [StyleCI](https://styleci.io/) for the simple but powerfull code style check. - Thanks to [PHPStan](https://github.com/phpstan/phpstan) && [Psalm](https://github.com/vimeo/psalm) for relly great Static analysis tools and for discover bugs in the code! ### License [](https://app.fossa.io/projects/git%2Bgithub.com%2Fvoku%2Fanti-xss?ref=badge_large)
💾 Kaydet
İptal
📝 Yeniden Adlandır
İptal
Kaydet
🔐 Dosya İzinleri (chmod)
İzin Değeri:
Hızlı Seçim:
777
755
644
600
777
= Herkes okur/yazar/çalıştırır
755
= Sahip tam, diğerleri okur/çalıştırır
644
= Sahip okur/yazar, diğerleri okur
600
= Sadece sahip okur/yazar
İptal
Uygula