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Cross-site Scripting (XSS) Vulnerabilities in WebPress

Advisory ID:HTB22478
Product:WebPress
Vendor:YWP
Vulnerable Versions:Current on 01.07.2010 and probably prior
Tested Version:Current on 01.07.2010
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]
Risk Level:Low
CVSSv2 Base Score:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Discovered and Provided:High-Tech Bridge Security Research Lab
 

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerabilities in WebPress which could be exploited to perform cross-site scripting attacks.


1) Cross-site scripting (XSS) vulnerabilities in WebPress

1.1 The vulnerability exists due to input sanitation error in the "id_num_mod" parameter in admin_page_listings_lists_action.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. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.

Exploitation example:
http://host/path/_system/listings/lists/_pages/admin_page_listings_lists_action.php?id_num_mod=1%27% 22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E&submit_action=Edit

1.2 The vulnerability exists due to input sanitation error in the "range_listing_id" parameter in admin_page_listings_entries_amd_form.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. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.

Exploitation example:
http://host/path/_system/listings/entries/_pages/admin_page_listings_entries_amd_form.php?range_list ing_id=1%27%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E&listing_id=1

1.3 The vulnerability exists due to input sanitation error in the "id_num_mod" parameter in admin_page_sidemenu_blocks_action.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. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.

Exploitation example:
http://host/path/_system/menus/sidemenu_blocks/_pages/admin_page_sidemenu_blocks_action.php?id_num_m od=1%27%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3Edcf&submit_action=Edit

1.4 The vulnerability exists due to input sanitation error in the "id_num_mod" parameter in admin_page_accounts_users_action.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. Successful exploitation requires that victim is logged-in into the application and has access to administrative interface.

Exploitation example:
http://host/path/_system/accounts/users/_pages/admin_page_accounts_users_action.php?id_num_mod=xxx%3 Cscript%3Ealert%28document.cookie%29%3C/script%3E&submit_action=Edit


Solution:
Currently we are not aware of any vendor-supplied patches or other solutions. The vendor was contacted in accordance to our Vendor Notification Policy but we didn't get any answer or feedback.


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References:
[1] High-Tech Bridge Advisory HTB22478 - https://www.htbridge.com/advisory/HTB22478 - Cross-site Scripting (XSS) Vulnerabilities in WebPress
[2] WebPress - goywp.com - WebPress is a Content Management System (CMS), that resides on the server with your website.
[3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

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