Vulnerable Bash

vulnerable.sh

#!/bin/bash

create_secure_file() {
  local filename=$1
  local dir="/secure_dir"

  if [[ ! -d "$dir" ]]; then
    mkdir "$dir"
    chmod 700 "$dir"
  fi

  local tmpfile="${dir}/$(basename "$filename").tmp"

  touch "$tmpfile"
  chmod 644 "$tmpfile" 

  echo "Secure Content: $(date)" > "$tmpfile"

  chmod 600 "$tmpfile"
  mv "$tmpfile" "${dir}/${filename}"
  echo "Secure file '${dir}/${filename}' created successfully."
}

echo -n "Enter the name of the secure file you want to create: "
read FILENAME

create_secure_file "$FILENAME"