Unrestricted file upload vulnerability in index.php in the Twitter Clone (TClone) plugin for ReVou Micro Blogging allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in settings/my_photo.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2008-6751)