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A vulnerability in iXsystems FreeNAS (and TrueNAS) 11.2 before 11.2-u8 and 11.3 before 11.3-U1 allows an attacker to cause a denial of service by sending excessively long or rapid authentication messages to the login authentication component, which lacks proper input length and rate limiting.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a proof-of-concept exploit for CVE-2020-11650, a denial-of-service vulnerability in FreeNAS. The main file, 'attack.py', is a Python script that connects to the target FreeNAS instance's WebSocket API and sends a specially crafted authentication request with an extremely large password value. This is intended to overwhelm the service and cause a denial of service. The script requires the attacker to specify the target's IP address as a command-line argument. The only other file is a brief README.md with usage instructions. The exploit does not attempt to gain unauthorized access or execute arbitrary code; its sole purpose is to crash or hang the target service by exploiting improper input handling in the authentication mechanism.
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