Multiple Vulnerabilities in Free Simple CMS

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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 Try For Free 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.

Previous Security Advisories with CWE-98:

HTB22990: Local File Inclusion Vulnerability in TeamCal Pro

HTB22985: Remote File Inclusion Vulnerability in ACal

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