Commit Graph

33 Commits

Author SHA1 Message Date
Haelwenn Monnier
b865e14f25
login & su: Treat an empty passwd field as invalid (#315)
* login & su: Treat an empty passwd field as invalid

Otherwise it's treated like the “require no password” clause while it probably
should be treated like a normal su that can't validate anyway.

A similar change should be done for USE_PAM.

* su & login: Introduce PREVENT_NO_AUTH
2021-03-28 22:16:03 -05:00
Serge Hallyn
697901a328
Merge pull request #303 from breard-r/yescrypt
Add yescrypt support
2021-03-28 22:13:56 -05:00
Martijn de Gouw
c464ec5570 newuidmap,newgidmap: Relax gid checking to allow running under alternative group ID
Signed-off-by: Martijn de Gouw <martijn.de.gouw@prodrive-technologies.com>
2021-02-08 13:32:18 +01:00
Rodolphe Bréard
5cd04d03f9 Add yescrypt support 2021-02-01 22:11:10 +01:00
Jason Franklin
e2f74c347b
Add "NONEXISTENT" to "etc/login.defs" 2020-05-11 09:26:04 -04:00
Topi Miettinen
69301dfa24
login.defs: warn about weak choices
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>
2020-04-10 14:09:55 +03:00
Duncan Overbruck
085d04c3dd
add new HOME_MODE login.defs(5) option
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.
2020-01-12 16:18:32 +01:00
Serge Hallyn
93f1f35123 Revert "add new HOME_MODE login.defs(5) option"
Missing file

This reverts commit a847899b52.
2020-01-12 07:56:19 -06:00
Duncan Overbruck
a847899b52
add new HOME_MODE login.defs(5) option
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.
2020-01-11 22:27:39 +01:00
prez
2958bd050b Initial bcrypt support 2019-12-01 11:00:57 -06:00
Stanislav Brabec
3025fefc41 login.defs: Cosmetic space change
Fix formatting of login.defs comments. Variables are preceeded by "#"
without space, comments are preceeded by "# ". It makes the file machine
parseable again.

Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
2019-07-26 22:47:05 +02:00
Stanislav Brabec
00a5cff244 login.defs: Really add LASTLOG_UID_MAX
However 46331648 mentions adding of LASTLOG_UID_MAX to login.defs, it did
not happen.

Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>
2019-07-26 22:34:59 +02:00
WheresAlice
1e98b3b559 Make language less binary 2017-09-20 17:00:29 +01:00
Stéphane Graber
65c2617140
Tweak uid/gid map default configuration
- Use an allocation of 65536 uids and gids to allow for POSIX-compliant
   user owned namespaces.
 - Don't allocate a uid/gid map to system users.
   Unfortunately checking for --system isn't quite enough as some
   distribution wrappers always call useradd without --system and take care
   of choosing a uid and gid themselves, so also check whether the
   requested uid/gid is in the user range.

This is taken from a patch I wrote for Ubuntu a couple years ago and
which somehow didn't make it upstream.

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>
2016-02-15 18:11:10 -05:00
Dimitri John Ledkov
46a72bc342
Force use shadow, even if missing. 2015-02-27 17:01:30 +00:00
Eric W. Biederman
f28ad4b251 Add backend support for suboridnate uids and gids
These files list the set of subordinate uids and gids that users are allowed
to use.   The expect use case is with the user namespace but other uses are
allowed.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-08-05 10:08:45 -05:00
Guido Trentalancia
04b950b824 fix typographic errors and use a better format 2013-07-28 19:04:50 +02:00
nekral-guest
ee3d411024 * etc/login.defs: Updated description of UMASK to indicate its
usage by pam_umask.
2010-03-26 11:53:06 +00:00
nekral-guest
65741533ca * etc/login.defs: SYS_GID_MIN /SYS_UID_MIN changed from 100 to
101. GID 100 seems to be used statically.
2009-07-23 20:41:35 +00:00
nekral-guest
d60f0a1a10 * etc/login.defs: Added note for PAM enabled configurations. 2009-03-14 13:20:25 +00:00
nekral-guest
af96cba0cc * etc/login.defs: Improve the documentation of UMASK. 2009-01-19 10:21:50 +00:00
nekral-guest
b18d46e68d * NEWS, etc/login.defs: New CREATE_HOME variable to tell useradd
to create a home directory for new users.
	* src/useradd.c, man/useradd.8.xml: New -M/--no-create-home option
	and CREATE_HOME usage. System accounts are not impacted by
	CREATE_HOME.
	* man/useradd.8.xml: Indicate that a new group is created by
	default.
	* src/useradd.c: Removed TODO item (moved to the TODO file).
2008-09-13 11:55:41 +00:00
nekral-guest
987d853aa9 Document MAX_MEMBERS_PER_GROUP. 2008-03-08 16:05:30 +00:00
nekral-guest
18c914f086 Added new option -r, --system for system accounts in useradd, groupadd,
and newusers.
2008-02-19 21:01:38 +00:00
nekral-guest
6e3ad7a275 * man/chpasswd.8.xml, man/chgpasswd.8.xml: Document how the
encryption algorithm is chosen for the passwords. Document the new
  -c and -s options. Add a reference to login.defs(5).
* man/login.defs.5.xml: Document the ENCRYPT_METHOD,
  MD5_CRYPT_ENAB, SHA_CRYPT_MIN_ROUNDS, and SHA_CRYPT_MAX_ROUNDS
  variables.
* etc/login.defs: Indicate that MD5_CRYPT_ENAB is deprecated.
  Document the relationship with PAM for MD5_CRYPT_ENAB and
  ENCRYPT_METHOD.
2007-11-20 12:59:20 +00:00
nekral-guest
e406b7fe4a * libmisc/salt.c: The salt has a random size (between 8 and 16
bytes).
* lib/getdef.c, etc/login.defs: Add definitions for
  SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS.
* libmisc/salt.c: Use SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS
  to add a random number of rounds if needed.
2007-11-20 00:05:54 +00:00
nekral-guest
b8d8d0de00 Add support for SHA256 and SHA512 encrypt methods. Apply RedHat's patch
shadow-4.0.18.1-sha256.patch. Thanks to Peter Vrabec. Hardly no changes
except re-indent and changes related to recent modifications (max_salt_len
in crypt_make_salt). Changes in lib/defines.h not applied (definition of
ENCRYPTMETHOD_SELECT). I will add a configure check or flag.
2007-11-19 22:14:19 +00:00
nekral-guest
b2120265fd Added the subversion svn:keywords property (Id) for proper identification. 2007-11-10 23:46:11 +00:00
nekral-guest
5e20c4359f [svn-upgrade] Integrating new upstream version, shadow (4.0.18) 2007-10-07 11:47:57 +00:00
nekral-guest
8451bed8b0 [svn-upgrade] Integrating new upstream version, shadow (4.0.13) 2007-10-07 11:47:01 +00:00
nekral-guest
8e167d28af [svn-upgrade] Integrating new upstream version, shadow (4.0.8) 2007-10-07 11:46:07 +00:00
nekral-guest
effd479bff [svn-upgrade] Integrating new upstream version, shadow (4.0.4) 2007-10-07 11:45:23 +00:00
nekral-guest
45c6603cc8 [svn-upgrade] Integrating new upstream version, shadow (19990709) 2007-10-07 11:44:02 +00:00