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LightBlog 9.5 - REMOTE FILE UPLOAD VULNERABILITY by Omni 1) Infos --------- Date : 2008-01-30 Product : LightBlog Version : v 9.5 Vendor : http://www.publicwarehouse.co.uk/ Vendor Status : 2008-01-31 Informed! 2008-01-31 Patch received from vendor! 2008-02-01 Published! Description : Lightblog provides webmasters who don't have SQL databases with a fully featured blogging system. Using text files to store data, there's no need for complicated installation procedures or a potentially pricey hosting bill. Dork : "Powered by LightBlog" - Powered by LightBlog Source : omnipresent - omni - http://omni.netsons.org E-mail : omnipresent[at]NOSPAMemail[dot]it - omni[at]NOSPAMplayhack[dot] Team : Playhack.net Security 2) Security Issues ------------------- --- [ Remote File Upload Vulnerability ] --- =============================================== A remote file upload vulnerability is present in LightBlog version 9.5. Users without permissions are able to upload any kind of files, also .php; so the attacker can upload their own remote PHP shell. The file vulnerable is: cp_upload_image.php, and you can find it under the root directory of the blog uploaded. (shown in the section PoC). --- [ PoC ] --- =============== http://localhost/light/cp_upload_image.php Just look for your PHP shell, upload it (shell.php) and then use it: http://localhost/light/images/shell.php --- [ Patch ] --- =============== - Edit the source code. - use CHMOD - Delete cp_upload_image.php - Use the vendor patch. Best Regards, /Omni # milw0rm.com [2008-02-01]