Cross-site Scripting (XSS) Vulnerabilities in Expression CMS

This vulnerability was discovered by our security researchers before 2019.

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Advisory ID:	HTB22617
Product:	Expression
Vendor:	Backbone Technology
Vulnerable Versions:	Current at 18.09.2010 and probably prior
Tested Version:	Current at 18.09.2010
Advisory Publication:	September 22, 2010 [without technical details]
Vendor Notification:	September 22, 2010
Public Disclosure:	October 6, 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)
Discovered and Provided:	High-Tech Bridge Security Research Lab
Advisory Details:
High-Tech Bridge SA Security Research Lab has discovered multiple vulnerabilities in Expression CMS which could be exploited to perform cross-site scripting attacks. 1) Cross-site scripting (XSS) vulnerability in Expression CMS 1.1 The vulnerability exists due to input sanitation error in the "section_id" parameter in index.php within the "contact us" page. 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/?section_id=1002815%27%22%3E%3Cscript%3Ealert%28/XSS/%29%3C/scri pt%3E 1.2 The vulnerability exists due to input sanitation error in the "section_copy_id" parameter in index.php within the "contact us" page. 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/?section_copy_id=1005176%27%22%3E%3Cscript%3Ealert%28123%29%3C/s cript%3E
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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 HTB22617 - https://www.immuniweb.com/advisory/HTB22617 - Cross-site Scripting (XSS) Vulnerabilities in Expression CMS [2] Expression CMS - http://www.backbonetechnology.com - Expression is an integrated Web Management Framework (WMF) and Content Management System (CMS) created by Backbone Technology. [3] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Previous Security Advisories with CWE-79:

HTB22614: Multiple Vulnerabilities in Elxis CMS

HTB22611: Cross-site Scripting (XSS) Vulnerabilities in Docebo

194.3k
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18
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