Aron Nopanen created FLEX-35123:
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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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