alpine 3.6
access weakness #476


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 we are installed setuid root be careful to not drop core. */
	if (original_real_uid != original_effective_uid) {
		struct rlimit rlim;
		rlim.rlim_cur = rlim.rlim_max = 0;
		if (setrlimit(RLIMIT_CORE, &rlim) < 0)
			fatal("setrlimit failed: %.100s", strerror(errno));
	/* Get user data. */
	pw = getpwuid(original_real_uid);
	if (!pw) {
		logit("No user exists for uid %lu", (u_long)original_real_uid);
	/* Take a copy of the returned structure. */
	pw = pwcopy(pw);

	 * Set our umask to something reasonable, as some files are created
	 * with the default umask.  This will make them world-readable but
	 * writable only by the owner, which is ok for all files for which we
	 * don't set the modes explicitly.


	 * Initialize option structure to indicate that no values have been
	 * set.

	/* Parse command-line arguments. */
	host = NULL;
	use_syslog = 0;
	logfile = NULL;
	argv0 = av[0];

	while ((opt = getopt(ac, av, "1246ab:c:e:fgi:kl:m:no:p:qstvx"
	    "ACD:E:F:GI:J:KL:MNO:PQ:R:S:TVw:W:XYy")) != -1) {
		switch (opt) {
		case '1':
			options.protocol = SSH_PROTO_1;
		case '2':
			options.protocol = SSH_PROTO_2;

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