Following the discussion https://github.com/shadow-maint/shadow/pull/345
I have changed the documentation to clarify the behaviour of subid
delegation when any subid source except files is configured.
Clarify that the subid delegation can only come from one source.
Moreover, add an example of what might happen if the subid source is NSS
and useradd is executed.
Related: https://github.com/shadow-maint/shadow/issues/331
Include the new HMAC_CRYPTO_ALGO key that is needed by pam_timestamp to
select the algorithm that is going to be used to calculate the message
authentication code.
pam_timestamp is currently using an embedded algorithm to calculate the
HMAC message, but the idea is to improve this behaviour by relying on
openssl's implementation. On top of that, the ability to change the
algorithm with a simple configuration change allows to simplify the
process of removing unsecure algorithms.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1947294
man/usermod.8.xml: specify what happens when the current home directory
doesn't exist if using -d and -m options. Moreover, specify what happens
when the group ownership is changed and the uid's don't match in -u and
-g options.
man/shadow.5.xml: indicate the exact time and timezone for the dates.
Moreover, clarify that when the password expires the user won't be able
to login.
man/chage.1.xml: Indicate that -d option with a value of 0 forces the
user to change his password. Besides, set an example on how to use -E
option. Finally, add a general note to clarify that chage only takes
charge of local users and another note to indicate that it doesn't check
inconsistencies between shadow and passwd files.
According to crypt(5), MD5 and DES should not be used for new
hashes. Also the default number of SHA rounds chosen by libc is orders
of magnitude too low for modern hardware. Let's warn the users about
weak choices.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Explanation: clarify the useradd -d parameter as it does create directory HOME_DIR if it doesn't exit.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1677005
Changelog: [serge] minor tweak to the text
This option can be used to set a separate mode for useradd(8) and
newusers(8) to create the home directories with.
If this option is not set, the current behavior of using UMASK
or the default umask is preserved.
There are many distributions that set UMASK to 077 by default just
to create home directories not readable by others and use things like
/etc/profile, bashrc or sudo configuration files to set a less
restrictive
umask. This has always resulted in bug reports because it is hard
to follow as users tend to change files like bashrc and are not about
setting the umask to counteract the umask set in /etc/login.defs.
A recent change in sudo has also resulted in many bug reports about
this. sudo now tries to respect the umask set by pam modules and on
systems where pam does not set a umask, the login.defs UMASK value is
used.
This option can be used to set a separate mode for useradd(8) and
newusers(8) to create the home directories with.
If this option is not set, the current behavior of using UMASK
or the default umask is preserved.
There are many distributions that set UMASK to 077 by default just
to create home directories not readable by others and use things like
/etc/profile, bashrc or sudo configuration files to set a less
restrictive
umask. This has always resulted in bug reports because it is hard
to follow as users tend to change files like bashrc and are not about
setting the umask to counteract the umask set in /etc/login.defs.
A recent change in sudo has also resulted in many bug reports about
this. sudo now tries to respect the umask set by pam modules and on
systems where pam does not set a umask, the login.defs UMASK value is
used.
If SSH_ORIGINAL_COMMAND is set, it will be added to the syslog entry.
Closes#123.
Changelog: (SEH squashed commit): Fixing indentation
Changelog: (SEH) break up long line
Suggesting mode 2770 is dangerous because it makes the binary writeable
by all members of the owning group which is supposed to be normal
end-users. Suggest 2710 instead as is usual for s[ug]id binaries,
allowing execution but neither reading nor writing.
Signed-off-by: Michael Weiser <michael.weiser@gmx.de>
Synchronize how passwd(5) and shadow(5) describe the password field.
Reorder the descriptions more logically.
Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
