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From "Yasser Zamani (JIRA)" <j...@apache.org>
Subject [jira] [Created] (WW-4539) Handling array of tokens in token session interceptor to prevent CSRF attack in an async-request app
Date Sun, 30 Aug 2015 17:14:45 GMT
Yasser Zamani created WW-4539:
---------------------------------

             Summary: Handling array of tokens in token session interceptor to prevent CSRF
attack in an async-request app
                 Key: WW-4539
                 URL: https://issues.apache.org/jira/browse/WW-4539
             Project: Struts 2
          Issue Type: Improvement
          Components: Core Interceptors
    Affects Versions: Future
            Reporter: Yasser Zamani
            Priority: Trivial
             Fix For: 2.3.x


We have an application based on Struts2 which may call multiple async actions via JQuery AJAX
post or form post. To prevent this application from CSRF attacks I'm going to write my own
interceptor which is very similar to Struts2 token session interceptor. But this one holds
an array of valid tokens instead of one token to enable user to have async multiple requests
with different valid token for each one. i.e. my own token TAG will generate different tokens
in each inclusion even in one JSP and thread. So, different part of JSP can have their own
async requests with valid tokens. Each token will be removed from array when corresponded
request has finished.

I decided to share my work to you for two reasons:
1. Maybe you are interested too to have this feature in Struts core.
2. To get your feedback if this solution works to prevent CSRF attacks. I just copy from token
session interceptor and current token tag in Struts core but still I'm wory about thread safety
of my work or any other issue.

Thanks in advance! 



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