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TITLE:
Simple PHP Blog Cross-Site Request Forgery

SECUNIA ADVISORY ID:
SA27264

VERIFY ADVISORY:
http://secunia.com/advisories/27264/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Simple PHP Blog 0.x
http://secunia.com/product/5342/

DESCRIPTION:
Demential has discovered a vulnerability in Simple PHP Blog, which
can be exploited by malicious people to conduct cross-site request
forgery attacks.

The vulnerability is caused due to the application allowing users to
perform certain actions via HTTP requests without performing any
validity checks to verify the request. This can be exploited to e.g.
delete blocks or links by posting comments with malicious image links
and enticing a logged-in administrator to view the comments.

Successful exploitation requires that "[img]" has been switched on in
"Tags to Allow in Comments" in setup.php.

The vulnerability is confirmed in version 0.5.1. Other versions may
also be affected.

SOLUTION:
Do not browse untrusted websites or visit comments while logged on to
the application. Switch off the "[img]" tag in setup.php.

PROVIDED AND/OR DISCOVERED BY:
Demential

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