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Kayako eSupport v2.3.1 Support Tracker XSS Vulnerability
From: Seth Alan Woolley <seth () tautology org>
Date: Tue, 15 Feb 2005 00:15:28 -0800


1290 customers according to Google.


Vendor notified by their access log files (and this email to their sales staff):


Keeping this short and sweet since XSS vulns aren't that big of a deal 
to find, even still.  Clients login with cookies with a "remember me" 
check box.  I thought it was at least significant because of what "nav" 
is for.  The "nav" value is inserted as a subheading of the main page 
node, and one website I saw this at inserted html code with a link in 
the nav argument.  Nice.  One of those "double take" moments.  This XSS 
was used as a "feature", leveraged by a customer: a hosting company.  I 
was in awe.  They should simply know better.  So should Kayako.

Now, let's see how fast Kayako can release a security bulletin to their 
customers.  Isn't a security audit a part of every release?

No fix yet, since the code is proprietary.  I always release fixes for 
free software / open source code.  I can't do that with proprietary 
code, though.



P.S.  Vendors have burned me and their users in the past for not fessing 
up or giving credit where due; I agree with Linus Torvalds, vendor-sec 
and ideas like it are a bad idea:

"I happen to believe in openness, and vendor-sec does not. It's that 
simple." ( http://www.internetnews.com/dev-news/article.php/3458961 )

Seth Alan Woolley [seth at positivism.org], SPAM/UCE is unauthorized
Key id EF10E21A = 36AD 8A92 8499 8439 E6A8  3724 D437 AF5D EF10 E21A

Attachment: _bin

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