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SSCHADV2012-099 - t-online.de eMail Center - Cross-Site Request Forgery & Cross-site Scripting vulnerabilities

Advisory:
t-online.de eMail Center – Cross-Site Request Forgery  & XSS vulnerabilities
Advisory ID:
SSCHADV2012-099
Author:
Stefan Schurtz
Affected Software:
Successfully tested on email.t-online.de
Vendor URL:
Vendor Status:
fixed
 
======================
Vulnerability Description
======================
 
http://email.t-online.de is prone to multiple CSRF and XSS vulnerabilities
 
======================
PoC-Exploit
======================

// XSS
 
A XSS it’s possible by a text or html file send as an attachement, which includes the following JavaScript: ‘"</script><script>alert(/xss/)</script>. When the user opens the attachment the XSS is executed.

// CSRF

It’s possible to logout a user, to deactivate the spam detection and to set a new e-mail forwarding.

======================
Solution
======================

fixed

======================
Disclosure Timeline
======================

08-Sep-2012 – T-online Support informed (info@telekom.de)
08-Sep-2012 – heise Security informed
11-Sep-2012 – Telekom Security Team informed by heise Security
13-Oct-2012 – fixed by vendor

======================
Credits
======================

Vulnerabilities found and advisory written by Stefan Schurtz.

======================
References
======================

http://www.darksecurity.de/advisories/2012/SSCHADV2012-099.txt

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