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From "Aron Nopanen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLEX-35123) DOM XSS vulnerability in history.js
Date Fri, 26 Aug 2016 19:36:21 GMT
Aron Nopanen created FLEX-35123:
-----------------------------------

             Summary: DOM XSS vulnerability in history.js
                 Key: FLEX-35123
                 URL: https://issues.apache.org/jira/browse/FLEX-35123
             Project: Apache Flex
          Issue Type: Bug
            Reporter: Aron Nopanen


Template file history.js contains a DOM XSS vulnerability. While it looks like it would be
difficult to exploit, it should be addressed.

The code in question is in a block specific to ancient versions of Safari (<= 2.0.4), so
I propose that block could safely be removed entirely.

The vulnerable line is:

getFormElement().innerHTML = '<form name="historyForm" action="'+file+'#' + flexAppUrl
+ '" method="GET"></form>';

The variables 'file' and 'flexAppUrl' are being passed unescaped into HTML subcontext.

I'm attaching a patch that would remove the Safari-specific handling, including the vulnerable
line.



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