compute_object_path (User *user)
{
        gchar *object_path;

        object_path = g_strdup_printf ("/org/freedesktop/Accounts/User%lu",
                                       (gulong) accounts_user_get_uid (ACCOUNTS_USER (user)));

        return object_path;
}

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.