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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:
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TITLE:
Simple Machines Forum Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA23175

VERIFY ADVISORY:
http://secunia.com/advisories/23175/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Simple Machines Forum 1.x
http://secunia.com/product/5285/

DESCRIPTION:
Jessica Hope has discovered a vulnerability in Simple Machines Forum,
which can be exploited by malicious people to conduct cross-site
scripting attacks.

If the "image" parameter is passed when accessing attachments, Simple
Machines Forum automatically sets the "image/gif" MIME type. Since the
Microsoft Internet Explorer browser overrides HTTP headers and tries
to guess MIME types via the content instead, this can be exploited to
execute arbitrary HTML and JavaScript code in a user's Internet
Explorer session in context of an affected site.

The vulnerability is confirmed in version 1.1. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure that the attachment is an image file.

PROVIDED AND/OR DISCOVERED BY:
Jessica Hope

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About:
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