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Cross-site Scripting (XSS) Vulnerability in SiteLoom CMS

Advisory ID:HTB22516
Product:SiteLoom CMS
Vendor:SiteLoom ApS
Vulnerable Versions:Current on 21.07.2010 and probably prior
Tested Version:Current on 21.07.2010
Advisory Publication:July 22, 2010 [without technical details]
Vendor Notification:July 22, 2010
Public Disclosure:August 5, 2010
Latest Update:July 23, 2010
Vulnerability Type:Cross-Site Scripting [CWE-79]
Risk Level:Medium
CVSSv2 Base Score:4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N)
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 vulnerability in SiteLoom CMS which could be exploited to perform cross-site scripting attacks.

1) Cross-site scripting (XSS) vulnerability in SiteLoom CMS
The vulnerability exists due to input sanitation error in the "mailform_1" parameter 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?pageid=8&mailform_send=true&confirm_value=send_okay&ma ilform_1=%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E

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[1] High-Tech Bridge Advisory HTB22516 - - Cross-site Scripting (XSS) Vulnerability in SiteLoom CMS
[2] SiteLoom CMS - - SiteLoom CMS is a powerful content management system written in PHP.
[3] Common Weakness Enumeration (CWE) - - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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