昨天半夜还帮DingKing搞定了几个FCKeditor,今天就看到坏狼那儿贴的有这文章。。。我提示一点: FCKeditor 的 asp aspx php 版本都存在此漏洞。。。
Infos: Fckeditor <=2.4.2 For php 任意上传文件漏洞 Author: Maple-x Date: 18/12/2007 FCKeditor是一款非常优秀的HTML在线编辑器。在处理PHP上传的地方存在严重的安全漏洞 导致用户可以上传任意文件 在fckeditor/editor/filemanager/upload/php/upload.php 61行
$sType = isset( $_GET['Type'] ) ? $_GET['Type'] : 'File' ;
// Check if it is an allowed type. if ( !in_array( $sType, array('File','Image','Flash','Media') ) ) SendResults( 1, '', '', 'Invalid type specified' ) ;
// Get the allowed and denied extensions arrays. $arAllowed = $Config['AllowedExtensions'][$sType] ; $arDenied = $Config['DeniedExtensions'][$sType] ;
// Check if it is an allowed extension. if ( ( count($arAllowed) > 0 && !in_array( $sExtension, $arAllowed ) ) || ( count($arDenied) > 0 && in_array( $sExtension, $arDenied ) ) ) SendResults( '202' ) ;
程序从$_GET数组中获取Type变量,然后通过in_array进行类型判断。 但在config配置文件中
$Config['ForceSingleExtension'] = true ;
$Config['AllowedExtensions']['File'] = array() ; $Config['DeniedExtensions']['File'] = array('html','htm','php','php2','php3','php4','php5','phtml','pwml','inc','asp','aspx','ascx','jsp','cfm','cfc','pl','bat','exe','com','dll','vbs','js','reg','cgi','htaccess','asis') ;
$Config['AllowedExtensions']['Image'] = array('jpg','gif','jpeg','png') ; $Config['DeniedExtensions']['Image'] = array() ;
$Config['AllowedExtensions']['Flash'] = array('swf','fla') ; $Config['DeniedExtensions']['Flash'] = array() ;
并未对Media类型进行上传文件类型的控制,导致用户上传任意文件
修补办法:更新到最新的2.5版本。或者在config.php文件中,添加对Media类型的文件类型限制
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