![]() ![]() Manually creating/updating a SQL query to accept dynamic parameters. ![]() The main cases we identified this solution would be used are: Please refer to SQL Injections and prevention methods to minimize the risk of SQL injections. Misuse of thise solution gives a hacker the possibility to get unwanted privileges and/or break the web pages and database. The purpose of this method is to let experienced developers create dynamic SQL queries. The responsibility of writing secure code falls on the user or third party software developer. This solution requires the user to edit the code manually, or to install a third-party extension that creates such code. ![]() Important: Users cannot generate such code using the Objects and Server Behaviors that ship with Dreamweaver 8.0.2 or CS3 (Example: Inserting a Recordset via the Server Behaviors panel or Insert bar). So how can we protect against SQL injections while still allowing for dynamic parameters and keeping the resulting code editable via the Server Behaviors panel in Dreamweaver? The solution is to insert the dynamic parameters into the SQL query itself, rather than passing them as classic SQL parameters (which would either be escaped or appended to the SQL via prepared statements). The following example shows a simple PHP Recordset that uses a dynamic SQL parameter to filter results. Prepared statements for PHP became available with MySQL 4.1, but because we wanted to support previous versions of MySQL as well, we decided to implement a custom function that does virtually the same thing. Please refer to SQL Injection Attacks by Example for additional information on SQ injection attacks. Dreamweaver 8.0.2 and CS3 use the prepared statements approach for ASP_VBS, ASP_JavaScript, Cold Fusion and JSP server models, and the escape the user's input approach for the PHP_MySQL server model. We recommend prepared statements which are described in more detail in Using prepared statements.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |