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Moderately critical

Extreme CMS Multiple Vulnerabilities

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Release Date:  2006-11-15    Last Update:  2006-11-22    Views:  8,182

Secunia Advisory SA22919

Where:

From remote

Impact:

Security Bypass, Cross Site Scripting

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


r0ut3r has discovered some vulnerabilities in Extreme CMS, which can be exploited by malicious users to conduct script insertion attacks and by malicious people to bypass certain security restrictions.

1) Input passed to the "bg1", "bg2", "text", and "size" form field parameters in admin/options.php is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is viewed.

2) It is possible to access admin/options.php without proper authentication. In combination with vulnerability #1 this can e.g. be exploited by an unauthenticated person to conduct script insertion attacks.

The vulnerabilities are confirmed in version 0.9. Other versions may also be affected.


Solution:
Edit the source code to ensure that input is properly sanitised and restrict access to the "admin" directory e.g. with an ".htaccess" file.

Provided and/or discovered by:
r0ut3r

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Extreme CMS Multiple Vulnerabilities

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