- #Javascript sql injection tool how to#
- #Javascript sql injection tool software#
- #Javascript sql injection tool code#
In debug mode Yii shows quite verbose errors which are certainly helpful for development. Avoiding debug info and tools in production ¶ If it can't be done consider hosting yourĪpplication elsewhere. If it's the case don't forget to deny access to everything except web. In case of shared hostingĮnvironments it could be impossible to achieve so we'll end up with all the code, configs and logs in server webroot. See the Sessions and Cookies sameSite option for more information.īy default server webroot is meant to be pointed to web directory where index.php is. Setting the sameSite cookie setting does not make the above obsolete since not all browsers support the setting yet. Note: Since version 2.0.21 Yii supports the sameSite cookie setting (requires PHP version 7.3.0 or higher). It is important to implement extra validation such as checking an IP address or a secret token in this case. Warning: Disabling CSRF will allow any site to send POST requests to your site. controller->enableCsrfValidation = false
#Javascript sql injection tool code#
Do not place this code into beforeRun() method because it won't have effect. return parent::beforeAction($action) ĭisabling CSRF validation in standalone actions must be done in init() call parent method that will check CSRF if such property is `true`. set `$this->enableCsrfValidation` here based on some conditions. To disable CSRF validation per custom actions you can do: namespace app\ controllers CSRF validation will not be applied to this and other actions It could be achieved by setting its property: namespace app\ controllers Sometimes you need to disable CSRF validation per controller and/or action. In order to avoid CSRF you should always: Unfortunately, this will not save us, because an attackerĬan put some JavaScript code instead of tag, which allows to send POST requests to that URL as well.įor this reason, Yii applies additional mechanisms to protect against CSRF attacks. So we can modify code to accept only POST requests on that URL. We know, that the browser will always send GET request to load an image, Accessing it using GET request, causes transfer of $2000įrom authorized user account to user anotherUser.
However this was just an example, there are much more things one could do using this approach, for example triggering payments One can say that logging out a user is not a serious thing, That's the basic idea of how a CSRF attack works. The browser will send the GET request to that URL and the user will be logged out from an. Requesting an image or requesting a page so when the user opens a page with such a manipulated tag, The browser doesn't make any difference between As longĪs it's requested by the user themselves everything is OK, but one day bad guys are somehow posting This assumption could be false.įor example, the website an. has a /logout URL that, when accessed using a simple GET request, logs the user out. The idea is that many applications assume that requests comingįrom a user browser are made by the user themselves. Note that HtmlPurifier processing is quite heavy so consider adding caching.ĬSRF is an abbreviation for cross-site request forgery. If it should be HTML we could get some help from HtmlPurifier: If all you need is plain text then escaping is as easy as the following:
XSS or cross-site scripting happens when output isn't escaped properly when outputting HTML to the browser. You can get details about the syntax in Quoting Table and Column Names. $rowCount = $connection->createCommand($sql)->queryScalar() In terms of basic PHP that would look like the following: $sortBy = $_GET For example, if we know that sorting could be done by three fields title, created_at and statusĪnd the field could be supplied via user input, it's better to check the value we've got right where we're receiving it. There are two main principles when it comes to security no matter which application is being developed:įilter input means that input should never be considered safe and you should always check if the value you've got isĪctually among allowed ones. So you will also find links for further reading on the general ideas behind these.
#Javascript sql injection tool software#
Most of these principles are not unique to Yii alone but apply to website or software development in general,
#Javascript sql injection tool how to#
Avoiding debug info and tools in productionīelow we'll review common security principles and describe how to avoid threats when developing applications using Yii.