![]() ![]() You can see the Drupal Core CSRF vulnerabilities fixed in 5.2 for an example of "bad code" and how to fix it. Using a link and a menu callback to handle a action that modifies data (especially destructive modifications like deletion) Using the $_POST variables directly and creating a form via HTML instead of the Drupal Form API Create forms in a safe way to avoid cross-site request forgeries (CSRF) Use data from $form_state instead of from $form_state in your code. ![]() The Form API's drupal_validate_form() and _form_validate() functions take care of populating a safe set of data in $form_state, using sanitized data from $form_state. Famously, attacks for SA-CORE-2014-005 leveraged a weakness in the form API input processing which has since been fixed. For example, you may have put a textfield on the page in your form, but the data returned for the textfield in $form_state might not be a string: it could be an uploaded file or an array. $form_state is actually a copy of the raw, unsanitized data from PHP's $_POST superglobal, so the data it contains has not been type-checked. In the Form API, using data from the $form_state array is a security risk. !common.inc/group/sanitization/7 (filtering or sanitizing functions) For example, just before sending plain text to the browser or mixing plain text with HTML, escape it with "check_plain()". Soln : he solution is to use an appropriate filter when needed. avoid "cross site scripting (XSS) attacks". Soln: add filtering in user keyword 1,make a system such a way that there is no user with single quote, like O'reilly.Ģ, make user not enter uncommon words like select,insert,update,delete. SELECT cust_id, cust_name, cust_email FROM customers WHERE category = '' DROP TABLE customers -' What would happen if a visitor used the keyword ' DROP TABLE customers -? The query would be: This enables the user to inject SQL statements into the query. Write PDO query instead of direct query Ui.autocomplete - jQuery UI: AutocompleteĮffects.bounce - jQuery UI: Effects BounceĮffects.explode - jQuery UI: Effects ExplodeĮffects.highlight - jQuery UI: Effects HighlightĮffects.pulsate - jQuery UI: Effects PulsateĮansfer - jQuery UI: Effects Transfer Drupal.progress - Drupal progress indicatorĭllapse - Drupal collapsible fieldsetĭrupal.textarea - Drupal resizable textareaĭtocomplete - Drupal autocomplete ![]()
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