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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
http://corporate.secunia.com/how_to_buy/15/?r=l

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TITLE:
Extreme CMS Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA22919

VERIFY ADVISORY:
http://secunia.com/advisories/22919/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Extreme CMS 0.x
http://secunia.com/product/12620/

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

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About:
This Advisory was delivered by Secunia as a free service to help
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Please Note:
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