By Billy Hoffman
This ebook may be required analyzing for somebody who's constructing, operating with, or maybe handling an online software. the applying does not also have to take advantage of Ajax. lots of the innovations during this ebook are safety practices for non-Ajax purposes which were prolonged and utilized to Ajax; no longer the wrong way round. for instance, SQL injection assaults can exist even if an program makes use of Ajax or now not, yet Ajax offers an attacker different "entry issues" to aim to assault your program. every one provider, technique, and parameter is taken into account an access point.
After studying this booklet, i'm discovering myself correcting safeguard mistakes i'm merely understand discovering in my initiatives. a few corrections i have made problem JSON, the GET vs. put up factor, and others. With the corrections made, i think that my functions are much more secure. This e-book helped make that take place.
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Additional resources for Ajax Security
Once a response is received from the asynchronous request, the data or page fragment contained in the response has to be inserted back into the current page. This is accomplished by making modifications to the DOM. getElementById to find the HTML span in which the time was displayed. The handleCurrentTimeChanged method then called additional DOM methods to create a text node if necessary and then modify its contents. This is nothing new or revolutionary; but the fact that the dynamic content can be refreshed from the server and not be included with the initial response makes all the difference.
It has actually created a perfect storm of potential vulnerabilities by impacting application security in three major ways: • • • Ajax applications are more complex. Ajax applications are more transparent. Ajax applications are larger. INCREASED COMPLEXITY,TRANSPARENCY, AND SIZE The increased complexity of Ajax applications comes from the fact that two completely separate systems—the Web server and the client’s browser—now have to work together 19 CHAPTER 1 INTRODUCTION TO AJAX SECURITY in unison (and asynchronously) in order to allow the application to function properly.
Compare this situation to attacking a thick-client application. In the thick-client case, even if the attacker manages to obtain the client portion of the application, it may be that the server portion of the application is only accessible on a certain internal network disconnected from the rest of the outside world. Our hacker may have to physically break into a particular office building in order to mount an attack against the server. That is orders of magnitude more dangerous then being able to crack it while sitting in a basement 1,000 miles away eating pizza and drinking Red Bull.
Ajax Security by Billy Hoffman