Ajax Security by Billy Hoffman

By Billy Hoffman

This e-book can be required examining for someone who's constructing, operating with, or maybe dealing with an internet program. the applying does not also have to take advantage of Ajax. lots of the strategies during this publication are safety practices for non-Ajax purposes which were prolonged and utilized to Ajax; no longer the opposite direction 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 attempt to assault your software. every one provider, procedure, and parameter is taken into account an access point.

The ebook itself is easily written. the fashion of writing is enticing. the single non-exciting a part of the booklet is the bankruptcy on customer part garage (i.e. cookies, Flash info items, neighborhood storage), yet this isn't the authors' fault. the subject itself isn't very interesting and that i came upon myself interpreting it quick so i'll get to the following bankruptcy. essentially the most attention-grabbing chapters is the single on JavaScript worms, just like the Samy malicious program. additionally fascinating are the occasional mentions of stories and discoveries within the safeguard group. for instance, the authors describe a proof-of-concept port scanner they wrote utilizing JavaScript by myself, which has the aptitude of scanning IP addresses and detecting the kind of net server they run (using the JS photograph object). one other attention-grabbing instance was once utilizing the :hover CSS type besides JavaScript to notice websites person has visited.

After analyzing this booklet, i'm discovering myself correcting safety blunders i'm in simple terms be aware of discovering in my initiatives. a few corrections i have made challenge JSON, the GET vs. publish factor, and others. With the corrections made, i believe that my purposes are much more secure. This e-book helped make that ensue.

Show description

Read or Download Ajax Security PDF

Best comptia books

The art of deception: controlling the human element of security

The world's so much notorious hacker deals an insider's view of the low-tech threats to high-tech safeguard Kevin Mitnick's exploits as a cyber-desperado and fugitive shape some of the most exhaustive FBI manhunts in historical past and feature spawned dozens of articles, books, motion pictures, and documentaries. for the reason that his unlock from federal felony, in 1998, Mitnick has became his existence round and verified himself as the most sought-after desktop defense specialists around the world.

Physical Security for IT

Loads of strategy yet now not sufficient perception. Having a strategy to deal with a subject is ok, yet with no greater information regarding why and examples, i did not think I obtained all i wished from this ebook. unfortunately there easily usually are not too many actual protection books from an IT viewpoint in the market. So for those who simply desire a technique to stick to, and that is all you wish - this can be a booklet for you.

Improving the Web

This is often quantity seventy eight of Advances in desktops. This sequence, which started booklet in 1960, is the oldest constantly released anthology that chronicles the ever- altering details know-how box. In those volumes we post from five to 7 chapters, 3 times in keeping with 12 months, that hide the most recent adjustments to the layout, improvement, use and implications of desktop know-how on society this day.

Botnet Detection: Countering the Largest Security Threat (Advances in Information Security)

Botnets became the platform of selection for launching assaults and committing fraud on the net. a greater knowing of Botnets may help to coordinate and boost new applied sciences to counter this severe safety danger. Botnet Detection: Countering the biggest defense risk contains chapters contributed by way of world-class leaders during this box, from the June 2006 ARO workshop on Botnets.

Additional info for Ajax Security

Sample text

The user is only blocked for the fraction of a second that getCurrentTime takes to execute, which is so brief that the vast majority of users would not even notice. When a response is received from the server, handleCurrentTimeChanged takes the response, which is simply a string representation of the current time, and alters the page DOM to reflect the new value. The user is only briefly blocked, as shown in Figure 1-5. None of this would be possible without JavaScript. 9 CHAPTER 1 INTRODUCTION TO AJAX SECURITY User Server Create XHR object Make request Continue using application Receive response Process response; modify DOM Figure 1-5 Ajax Application Workflow Same Origin Policy The Same Origin Policy is the backbone of the JavaScript security model.

These fragments can be raw data that are then transformed into HTML on the client, or they can be HTML fragments that are ready to be inserted directly into the document. In either case, after the server fulfills the request and returns the fragment to the client, the script code then modifies the page document object model (DOM) to incorporate the new data. This methodology not only satisfies our need for quick, smooth updates, but because the requests are made asynchronously, the user can even continue to use the application while the requests are in progress.

That’s odd. Eve checks her HTTP proxy, shown in Figure 2-5. So Eve’s request with SQL Injection probes was included in the request, and the server responded with a nice, detailed error message. The JavaScript callback function that handles the Ajax response with the flight information apparently suppresses errors returned by the server. Too bad the raw database error message was already sent over the wire where Eve can see it! The error message also tells her that the database server is Microsoft’s SQL Server.

Download PDF sample

Rated 4.38 of 5 – based on 50 votes