alpine 3.6
access weakness #366


Weakness Breakdown


An access weakness occurs when software does not properly implement permissions that could have unintended consequences if exploited by malicious actors. An example of this weakness is when a default username and password are set by the developer but do not get changed by the system administrator.

Warning code(s):

Ensure that umask is given most restrictive possible setting.

File Name:



The highlighted line of code below is the trigger point of this particular Alpine 3.6 access weakness.

         if (r < 0)
                log_warning_errno(r, "failed to parse kernel command line, ignoring: %m");

        if (arg_debug)

        if (getuid() != 0) {
                r = log_error_errno(EPERM, "root privileges required");
                goto exit;

        r = mac_selinux_init("/dev");
        if (r < 0) {
                log_error_errno(r, "could not initialize labelling: %m");
                goto exit;

        /* set umask before creating any file/directory */
        r = chdir("/");
        if (r < 0) {
                r = log_error_errno(errno, "could not change dir to /: %m");
                goto exit;


        udev_list_init(udev, &properties_list, true);

        r = mkdir(UDEV_ROOT_RUN "/udev", 0755);
        if (r < 0 && errno != EEXIST) {
                r = log_error_errno(errno, "could not create " UDEV_ROOT_RUN "/udev: %m");
                goto exit;

        dev_setup(NULL, UID_INVALID, GID_INVALID);

        /* before opening new files, make sure std{in,out,err} fds are in a sane state */
        if (arg_daemonize) {
                int fd;

                fd = open("/dev/null", O_RDWR);
                if (fd >= 0) {
                        if (write(STDOUT_FILENO, 0, 0) < 0)
                                dup2(fd, STDOUT_FILENO);
                        if (write(STDERR_FILENO, 0, 0) < 0)
                                dup2(fd, STDERR_FILENO);
                        if (fd > STDERR_FILENO)
                } else {
                        log_error("cannot open /dev/null"); 

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