Multiple XSS in Free Simple CMS

vendor:

Free Simple CMS

by:

High-Tech Bridge SA Security Research Lab

8.8

CVSS

HIGH

XSS (Cross Site Scripting), Local File Inclusion

79, 22

CWE

Product Name: Free Simple CMS

Affected Version From: 1

Affected Version To: 1

Patch Exists: YES

Related CWE: N/A

CPE: a:dustin_cowell_enterprises:free_simple_cms

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: N/A

2011

Multiple XSS in Free Simple CMS

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Free Simple CMS , which can be exploited to perform cross-site scripting attacks. Input appended to the URL after index.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. Input passed via the GET "db_themes_background_color_page" parameter to /themes/default/index.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website. Input passed via the GET "include" parameter to index.php (when GET "page" parameter is set to "login" and GET "request" parameter is set to "forgot_password") is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal sequences.

Mitigation:

Disable the register_globals directive, and ensure that all user-supplied input is properly sanitised and validated.

Source

Exploit-DB raw data:

Vulnerability ID: HTB23010
Reference: http://www.htbridge.ch/advisory/multiple_xss_in_free_simple_cms.html
Product: Free Simple CMS
Vendor: Dustin Cowell Enterprises ( http://www.freesimplesoft.com/ )
Vulnerable Version: 1.0 and probably prior
Tested on: 1.0
Vendor Notification: 25 May 2011
Vulnerability Type: XSS (Cross Site Scripting), Local File Inclusion
Risk level: High
Credit: High-Tech Bridge SA Security Research Lab ( http://www.htbridge.ch/advisory/ )

Vulnerability Details:
High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Free Simple CMS , which can be exploited to perform cross-site scripting attacks.

1) Input appended to the URL after index.php is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website

The following PoC code is available:

http://[host]/index.php/%27%3E%3Cscript%3Ealert%28document.cookie%29;%3C
/script%3E

2) Input passed via the GET "db_themes_background_color_page" parameter to /themes/default/index.php is not properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of affected website.

The following PoC code is available:

http://[host]/themes/default/index.php?db_themes_background_color_page=%
22%3E%3Cscript%3Ealert%28123%29;%3C/script%3E

Successful exploitation of the vulnerabilities requires that "register_globals" is enabled.

3) Input passed via the GET "include" parameter to index.php (when GET "page" parameter is set to "login" and GET "request" parameter is set to "forgot_password") is not properly verified before being used to include files.
This can be exploited to include arbitrary files from local resources via directory traversal sequences.

The following PoC code is available:

http://[host]/index.php?page=login&request=forgot_password&include=../..
/../../../../../../etc/passwd