alpine 3.6
access weakness #180


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.

         pwent = getpwuid(geteuid());

        if (pwent) {
            if (chdir(pwent->pw_dir) == -1) {
                ap_log_error(APLOG_MARK, APLOG_ALERT, errno, wsgi_server,
                             "mod_wsgi (pid=%d): Unable to change working "
                             "directory to home directory '%s' for uid=%ld.",
                             getpid(), pwent->pw_dir, (long)geteuid());

            return -1;
        else {
            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, wsgi_server,
                         "mod_wsgi (pid=%d): Unable to determine home "
                         "directory for uid=%ld.", getpid(), (long)geteuid());

            return -1;

    /* Setup the umask for the effective user. */

    if (daemon->group->umask != -1)

     * Linux prevents generation of core dumps after setuid()
     * has been used. Attempt to reenable ability to dump core
     * so that the CoreDumpDirectory directive still works.

#if defined(HAVE_PRCTL) && defined(PR_SET_DUMPABLE)
    /* This applies to Linux 2.4 and later. */

    if (ap_coredumpdir_configured) {
        if (prctl(PR_SET_DUMPABLE, 1)) {
            ap_log_error(APLOG_MARK, APLOG_ALERT, errno, wsgi_server,
                    "mod_wsgi (pid=%d): Set dumpable failed. This child "
                    "will not coredump after software errors.", getpid());

    return 0;

static int wsgi_setup_socket(WSGIProcessGroup *process)
    int sockfd = -1; 

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