Secure input and output handling - ViennaPHP
2 likes838 views
The document discusses best practices for secure input and output handling in Magento development, emphasizing the importance of data validation and output escaping to prevent security vulnerabilities like XSS and injection attacks. It highlights the features and technology stack of Magento 2, along with various validation rules and methods for ensuring data integrity and security during both frontend and backend processes. The document concludes by outlining a responsible approach to software design, including thorough validation, data management, and testing.
![Add your own validator
define([
'jquery',
'jquery/ui',
'jquery/validate',
'mage/translate'
], function ($) {
$.validator.addMethod('validate-custom-name',
function (value) {
return (value !== 'anna');
}, $.mage.__('Enter valid name'));
});
M
2](https://image.slidesharecdn.com/presentation2016-03-21phpmeetup-160324072138/85/Secure-input-and-output-handling-ViennaPHP-23-320.jpg)
Secure input and output handling - ViennaPHP
- 1. Secure input and output handling How not to suck at data validation and output
- 2. Anna Völkl / @rescueAnn Hi, I'm Anna. http://anna.voelkl.at I'm a Magento Certified Developer. 5 years Magento, Java/PHP since 2004 I love IT & Telecommunication and IT- & Information- Security. I work at . Web Agency in Vienna/AT
- 3. What is Magento? ● eCommerce Plaform ● Initial release 2008 ● Varien eBay Permira private equity fund ● Editions – Community Edition (CE, Open Source) – Enterprise Edition (EE) ● Matthias Talk – https://github.com/viennaphp/talks/blob/master/201505/01-outlook-on-magento-2.pdf
- 5. Why is Magento cool? ● Feature rich ● Highly customizeable ● Multiple stores/languages/currencies ● Medium-large enterprises, Small-Business Team ● Very active developer community (magento.stackexchange.com, Twitter, Slack, IRC, official Forum, Reddit,...) ● Magento 2 ;-)
- 6. Magento 2
- 7. Magento 2 technology stack ● Apache 2.x/Nginx 1.7+ ● PHP 5.5, 5.6x, 7.0 ● MySQL 5.6.x/MySQL Percona 5.6.x ● Optional – Varnish 3.x/4.x – Redis 2.x/3.x, Memcache 1.4.x (Cache Storage) – Solr 4.x (ElasticSearch planned)
- 8. Magento 2 technology stack ● HTML 5, CSS 3 (LESS) ● Jquery, RequireJS ● Zend Framework 1, Zend Framework 2, Symfony ● Coding standards PSR-0 (autoloading standard), PSR-1 (basic coding standards), and PSR-2 (coding style guide), PSR-3, PSR-4 ● Composer (dependency management)
- 9. Magento 2 testing ● Automated testing suite – Integration – Functional areas – Performance ● PHPUnit (unit tests) ● Selenium (functional tests)
- 10. Once upon a time...
- 11. academic titles?! Teamwork also involves being a good teammate, which is why we are very proud シャネル デコ FC Barcelona and was presenting partner of the Fan Zone event prior to the gamehqn Лечебные грязи Сакского озера Trying to find for a approach to raise male power and endurance. New year2013 best now41 Импотенция вы поглядите ! how to write an essay explaining why you deserve a scholarship Sophisticated Men High-heeled shoes A Wise Choice http://onemilliondollarhomepage.ru/ how to write up divorce paper write your name really cool shady lady free download driver samsung hd160jj p
- 14. Security-Technology, Department of Defense Computer Security Initiative, 1980
- 15. OWASP Top 10 1) Injection 2)Broken Authentication and Session Management 3)Cross Site Scripting (XSS) 4)Insecure Direct Object References 5)Security Misconfiguration 6)Sensitive Data Exposure 7)Missing Function Level Access Control 8)Cross-Site Request Forgery (CSRF) 9)Using Components with known Vulnerabilities 10)Unvalidated Redirects and Forwards
- 16. Stop „Last Minute Security“ ● Do the coding, spend last X hours on „making it secure“ ● Secure coding doesn't really take longer ● Data quality software quality security ● Always keep security in mind
- 17. Every feature adds a risk. Every input/output adds a risk.
- 18. http://blogs.technet.com/b/rhalbheer/archive/2011/01/14/real-physical-security.aspx
- 19. Input
- 20. Frontend input validation ● User experience ● Stop unwanted input when it occurs ● Do not bother your server with crazy input ● Only store, what you expect Don't fill up your database with garbage.
- 21. Magento Frontend Validation Magento 1 (51 validation rules) js/prototype/validation.js Magento 2 (74 validation rules) app/code/Magento/Ui/view/base/web/js/lib/validati on/rules.js
- 23. Add your own validator define([ 'jquery', 'jquery/ui', 'jquery/validate', 'mage/translate' ], function ($) { $.validator.addMethod('validate-custom-name', function (value) { return (value !== 'anna'); }, $.mage.__('Enter valid name')); }); M 2
- 24. M 2
- 25. <form> <div class="field required"> <input type="email" id="email_address" data-validate="{required:true, 'validate- email':true}" aria-required="true"> </div> </form> M 2
- 26. <form> <div class="field required"> <input type="email" id="email_address" data-validate="{required:true, 'validate- email':true}" aria-required="true"> </div> </form> M 2
- 27. <form> <fieldset data-hasrequired="* Required Fields"> <input type="password" data-validate="{required:true, 'validate- password':true}" id="password" aria- required="true"> <input type="password" data-validate="{required:true, equalTo:'#password'}" id="password- confirmation" aria-required="true"> </fieldset> </form> M 2
- 28. <form> <fieldset data-hasrequired="* Required Fields"> <input type="password" data-validate="{required:true, 'validate- password':true}" id="password" aria- required="true"> <input type="password" data-validate="{required:true, equalTo:'#password'}" id="password- confirmation" aria-required="true"> </fieldset> </form> M 2
- 29. Why frontend validation is not enough... https://quadhead.de/cola-hack-sicherheitsluecke-auf-meinecoke-de/
- 30. Don't trust the user. Don't trust the input!
- 31. Why validate input? User form input Database query results Web Services Server variables Cookies
- 32. Validate input rules Magento 1 Mage_Eav_Attribute_Data_Abstract Magento 2 MagentoEavModelAttributeDataAbstractData
- 33. MagentoEavModelAttributeDataAbstractData Input Validation Rules – alphanumeric – numeric – alpha – email – url – date M 2
- 34. ZendValidator Standard Validation Classes Alnum Validator Alpha Validator Barcode Validator Between Validator Callback Validator CreditCard Validator Date Validator DbRecordExists and DbNoRecordExists Validators Digits Validator EmailAddress Validator File Validation Classes GreaterThan Validator Hex Validator Hostname Validator Iban Validator Identical Validator InArray Validator Ip Validator Isbn Validator IsFloat IsInt LessThan Validator NotEmpty Validator PostCode Validator Regex Validator Sitemap Validators Step Validator StringLength Validator Timezone Validator Uri Validator
- 35. Output
- 36. Is input validation not enough? ● XSS – Protect your users – Protect yourself! ● Store escaped data? – Prepare the data where it's needed!
- 38. $block->escapeHtml() Whitelist: allowed Tags, htmlspecialchars M 2
- 40. $block->escapeHtml() Whitelist: allowed Tags, htmlspecialchars $block->escapeQuote() Escape quotes inside html attributes $addSlashes = false for escaping js that inside html attribute (onClick, onSubmit etc) M 2
- 41. $block->escapeUrl() Escape HTML entities in URL (htmlspecialchars) $block->escapeXssInUrl() eliminating 'javascript' + htmlspecialchars M 2
- 42. Magento 2 Templates XSS security <?php echo $block->getTitleHtml() ?> <?php echo $block->getHtmlTitle() ?> <?php echo $block->escapeHtml($block->getTitle()) ?> <h1><?php echo (int)$block->getId() ?></h1> <?php echo count($var); ?> <?php echo 'some text' ?> <?php echo "some text" ?> <a href="<?php echo $block->escapeXssInUrl( $block->getUrl()) ?>"> <?php echo $block->getAnchorTextHtml() ?> </a> Taken from http://devdocs.magento.com/guides/v2.0/frontend-dev-guide/templates/template-security.html
- 43. Magento 2 Templates XSS security ● Static Test: XssPhtmlTemplateTest.php in devtestsstatictestsuiteMagentoTestPhp ● See http://devdocs.magento.com/guides/v2.0/frontend- dev-guide/templates/template-security.html
- 45. What happend to the little attribute?
- 46. ● Weird customers and customer data was removed ● Frontend validation added • Dropdown (whitelist) would have been an option too ● Server side validation added ● Output escaped
- 47. Summary Think, act and design your software responsibly: 1) UTF-8 all the way 2) Client side validation, filter input 3) Server side validation 4) Data storage (database column size,...) 5) Escape output 6) Run tests
- 48. </happy>