meterN v1.2.3 – Remote Code Execution (RCE) (Authenticated)

Exploit Database
112 阅读

作者： LiquidWorm

日期： 2021-12-14
类别：
- webapps
平台：
- php
来源：https://www.exploit-db.com/exploits/50596/

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# Exploit Title: meterN v1.2.3 - Remote Code Execution (RCE) (Authenticated)

# Date: 18/11/2021

# Exploit Author: LiquidWorm

# Vendor Homepage: https://www.metern.org

<!--

meterN v1.2.3 Authenticated Remote Command Execution Vulnerability

Vendor: Jean-Marc Louviaux

Product web page: https://www.metern.org

Affected version: 1.2.3 and 0.8.3.2

Summary: meterN is a set of PHP/JS files that make a -Home energy metering & monitoring- solution.

It accept any meters like : electrical, water, gas, fuel consumption, solar, Wind energy production

and so on. Sensors such as temperature or humidity are also accepted. The philosophy is: To keep it

simple, fast, with a low foot print to run on cheap and low powered devices.

Desc: The application suffers from an authenticated OS command execution vulnerability. This can be

exploited to execute arbitrary commands through the 'COMMANDx' and 'LIVECOMMANDx' POST parameters in

admin_meter2.php and admin_indicator2.php scripts. The application interface allows users to perform

these actions through HTTP requests without performing any validity checks to verify the requests.

This CSRF can be exploited to perform actions with administrative privileges if a logged-in user

visits a malicious web site.

---------------------------------------------------------------------------------------------------

/admin/admin_meter2.php:

------------------------

69: if (!empty($_POST['COMMANDx']) && is_string($_POST['COMMANDx'])) {

70: $COMMANDx = htmlspecialchars($_POST['COMMANDx'], ENT_QUOTES, 'UTF-8');

71: } else {

72: $COMMANDx = '';

73: }

...

108: if (!empty($_POST['LIVECOMMANDx']) && is_string($_POST['LIVECOMMANDx'])) {

109: $LIVECOMMANDx = htmlspecialchars($_POST['LIVECOMMANDx'], ENT_QUOTES, 'UTF-8');

110: } else {

111: $LIVECOMMANDx = '';

112: }

...

271: exec("$COMMANDx 2>&1", $datareturn);

...

303: exec("$LIVECOMMANDx 2>&1", $datareturn);

---------------------------------------------------------------------------------------------------

Tested on: Apache/2.4.10 (Raspbian)

Apache/2.4.46 (Win64)

Linux 4.9.67-v7+ GNU/Linux (armv7l)

Microsoft Windows 10 Home (10.0.19042 Build 19042)

PHP/7.2.33

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic

@zeroscience

Advisory ID: ZSL-2021-5690

Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5690.php

18.11.2021

-->

PoC #1:

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<html>

<body>

</form>

</body>

</html>

PoC #2: