function/update_xml.php in FLABER 1.1 and earlier allows remote attackers to overwrite arbitrary files by specifying the target filename in the target_file parameter. NOTE: this can be leveraged for code execution by overwriting a PHP file, as demonstrated using function/upload_file.php.

More... (http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2008-6490)