Total Tests:

Multiple Vulnerabilities in Free Simple CMS

Advisory ID:HTB23010
Product:Free Simple CMS
Vendor:Dustin Cowell Enterprises
Vulnerable Versions:1.0 and probably prior
Tested Version:1.0
Advisory Publication:May 25, 2011 [without technical details]
Vendor Notification:May 25, 2011
Public Disclosure:June 15, 2011
Vulnerability Type:Cross-Site Scripting [CWE-79]
PHP File Inclusion [CWE-98]
Risk Level:High
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
7.6 (AV:N/AC:H/Au:N/C:C/I:C/A:C)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerabilities in Free Simple CMS which could be exploited to perform cross-site scripting attacks and compromise vulnerable system.

1) Cross-site scripting (XSS) vulnerabilities in Free Simple CMS
1.1 The vulnerability exists due to input sanitation error in URL in index.php. A remote attacker can send a specially crafted HTTP request to the vulnerable script and execute arbitrary HTML and script code in user`s browser in context of the vulnerable website.
Exploitation example:
http://[host]/index.php/%27%3E%3Cscript%3Ealert%28document.cookie%29;%3C/scr ipt%3E
1.2 The vulnerability exists due to input sanitation error in the "db_themes_background_color_page" parameter in themes/default/index.php. A remote attacker can send a specially crafted HTTP 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 that "register_globals" is enabled.
Exploitation example:
http://[host]/themes/default/index.php?db_themes_background_color_page=%22%3 E%3Cscript%3Ealert%28123 %29;%3C/script%3E

2) Local file inclusion vulnerability in Free Simple CMS
The vulnerability exists due to input sanitation error in the "include" parameter in index.php within the reset password functionality. A remote attacker can include and execute arbitrary files on the target system using directory traversal sequences.
Exploitation example:
http://[ host ]/index.php?page=login&request=forgot_password&include=../../../../../../../ ../etc/passwd

How to Detect Cross-Site Scripting Vulnerabilities
Website Security Test
  • GDPR & PCI DSS Test
  • Website CMS Security Test
  • CSP & HTTP Headers Check
  • WordPress & Drupal Scanning
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Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


References:
[1] High-Tech Bridge Advisory HTB23010 - https://www.immuniweb.com/advisory/HTB23010 - Multiple Vulnerabilities in Free Simple CMS
[2] Free Simple CMS - freesimplesoft.com - Free Simple CMS is a simple content management software.
[3] 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.
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