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.
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Subject: Simple PHP Blog Cross-Site Request Forgery
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