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In standalone setups we use the PAM stack to verify
the plaintext authentication, so we need to pass it
down...
There are still production systems out there
(legacy audio/video recording systems...)
using this.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9705
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Jul 17 11:17:54 UTC 2024 on atb-devel-224
pam_matrix calls smb_pam_conv() with resp=NULL in some situation,
we should not segfault...
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9705
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
This adds support for MIT Kerberos minimal PAC. Tickets from pure
Kerberos realms with MIT Kerberos 1.21 or newer will always include a
minimal PAC. The PAC include the checksum buffers and a logon_name PAC
buffer.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This gets rid of the multiple goto and just have a single destructor
goto.
Best view this commit with `git show -b <sha> --color-moved=zebra`
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is in preparation to split up the function into several functions.
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This reverts commit 944cb51506.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15583
Signed-off-by: Bjoern Jacke <bjacke@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Wed Mar 27 10:47:23 UTC 2024 on atb-devel-224
This message happens frequently when running a
PDC/NT4 mode w/out winbind.
Signed-off-by: David Mulder <dmulder@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Mar 27 02:15:31 UTC 2024 on atb-devel-224
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15469
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Fri Dec 1 08:06:44 UTC 2023 on atb-devel-224
This avoids messing up the debug logs when multiple processes are
writing into the same file.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Oct 11 00:24:58 UTC 2023 on atb-devel-224
Currently, we rely on ‘stored_nt’ being NULL to give an
NT_STATUS_WRONG_PASSWORD error.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The combination MANDATORY | ENABLED_BY_DEFAULT | ENABLED is very
commonly used, and introducing a shorter alias for it makes the code
clearer.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
The domain-local groups that are added to the PAC of a service ticket
are now, if the service doesn't disclaim support for SID compression,
placed into the resource groups structure in PAC_LOGON_INFO.
In a TGS exchange directed to a KDC, rather than to a service, the
resource groups structure is simply copied into the updated PAC without
any processing being done.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Besides the NETLOGON_GUEST bit indicating whether the user has been
authenticated, we now carry all of the other bits as well. This lets us
match Windows' behaviour of simply passing these bits through to an
updated PAC when processing a TGS-REQ.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Resource group SIDs should only be placed into a service ticket, but we
were including them in all tickets. Now that we have access to the group
attributes, we'll filter out any groups with SE_GROUP_RESOURCE set if
we're creating a TGT.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Group expansion, performed in dsdb_expand_nested_groups(), now
incorporates a check of the type of each group. Those that are resource
groups receive the SE_GROUP_RESOURCE bit in the attributes which are now
carried alongside each group SID.
Whereas before, in auth_convert_user_info_dc_sambaseinfo() and
auth_convert_user_info_dc_saminfo6(), we invariantly used the flag
combination SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT |
SE_GROUP_ENABLED to set attributes in the PAC, we now take the correct
attributes from user_info_dc.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
No need to recompile the world when only a few files need this.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Otherwise we'll generate a memory leak of imessaging_post_state/
tevent_immediate structures per incoming message!
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15201
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Example valgrind output:
==22502== 22,747,002 bytes in 21,049 blocks are possibly lost in loss record 1,075 of 1,075
==22502== at 0x4C29F73: malloc (vg_replace_malloc.c:309)
==22502== by 0x11D7089C: _talloc_pooled_object (in /usr/lib64/libtalloc.so.2.1.16)
==22502== by 0x9027834: tcopy_passwd (in /usr/lib64/libsmbconf.so.0)
==22502== by 0x6A1E1A3: pdb_copy_sam_account (in /usr/lib64/libsamba-passdb.so.0.27.2)
==22502== by 0x6A28AB7: pdb_getsampwnam (in /usr/lib64/libsamba-passdb.so.0.27.2)
==22502== by 0x65D0BC4: check_sam_security (in /usr/lib64/samba/libauth-samba4.so)
==22502== by 0x65C70F0: ??? (in /usr/lib64/samba/libauth-samba4.so)
==22502== by 0x65C781A: auth_check_ntlm_password (in /usr/lib64/samba/libauth-samba4.so)
==22502== by 0x14E464: ??? (in /usr/sbin/winbindd)
==22502== by 0x151CED: winbind_dual_SamLogon (in /usr/sbin/winbindd)
==22502== by 0x152072: winbindd_dual_pam_auth_crap (in /usr/sbin/winbindd)
==22502== by 0x167DE0: ??? (in /usr/sbin/winbindd)
==22502== by 0x12F29B12: tevent_common_invoke_fd_handler (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F30086: ??? (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F2E056: ??? (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F2925C: _tevent_loop_once (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x16A243: ??? (in /usr/sbin/winbindd)
==22502== by 0x16AA04: ??? (in /usr/sbin/winbindd)
==22502== by 0x12F29F68: tevent_common_invoke_immediate_handler (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F29F8F: tevent_common_loop_immediate (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F2FE3C: ??? (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F2E056: ??? (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F2925C: _tevent_loop_once (in /usr/lib64/libtevent.so.0.9.39)
==22502== by 0x12F4C7: main (in /usr/sbin/winbindd)
You can find one for each string in pdb_copy_sam_account(), in total
this already has 67 MB in total for this valgrind run.
pdb_getsampwnam() -> memcache_add_talloc(NULL, PDB_GETPWSID_CACHE, ...)
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15169
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Sep 16 20:30:31 UTC 2022 on sn-devel-184
The bad password count is supposed to limit the number of failed login
attempt a user can make before being temporarily locked out, but race
conditions between processes have allowed determined attackers to make
many more than the specified number of attempts. This is especially
bad on constrained or overcommitted hardware.
To fix this, once a bad password is detected, we reload the sam account
information under a user-specific mutex, ensuring we have an up to
date bad password count.
Discovered by Nathaniel W. Turner.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Checking for presence of both netgroup and innetgr. INNETGR is not
defined on libc's such as musl so not checking results in a build error.
Signed-off-by: listout <brahmajit.xyz@gmail.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Mon Aug 8 07:28:31 UTC 2022 on sn-devel-184
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jun 9 22:40:43 UTC 2022 on sn-devel-184
This partly reverts commit edda7a329e.
Revert the chunks related to netgroups and skip NIS support related ones.
Use getdomainname() from glibc instead of yp_get_default_domain() from
libnsl to get the NIS domain name.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15087
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This partly reverts commit 6dc463d3e2.
Reverted to allow next revert commits to apply cleanly. Do not recreate
selftest/knownfail.d/usernamemap file.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15087
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15041
Signed-off-by: Pavel Filipenský <pfilipen@redhat.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Noel Power <npower@samba.org>
Autobuild-User(master): Noel Power <npower@samba.org>
Autobuild-Date(master): Thu Apr 7 09:49:44 UTC 2022 on sn-devel-184
mapped_state is only evaluated in authsam_check_password_internals()
of auth_sam.c in source4, so setting it in the auth3 code
doesn't make any difference. I've proved that with
an SMB_ASSERT() and a full pipeline not triggering it.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13879
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This is not really relevant for now, as USER_INFO_INTERACTIVE_LOGON is
not evaluated in the source3/auth stack. But better add it to
be consistent.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15001
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Before the CVE-2020-25717 fixes we had a fallback from
getpwnam('DOMAIN\user') to getpwnam('user') which was very dangerous and
unpredictable.
Now we do the fallback based on sid_to_uid() followed by
getpwuid() on the returned uid.
This obsoletes 'username map [script]' based workaround adviced
for CVE-2020-25717, when nss_winbindd is not used or
idmap_nss is actually used.
In future we may decide to prefer or only do the SID/UID based
lookup, but for now we want to keep this unchanged as much as possible.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14901
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
[metze@samba.org moved the new logic into the fallback codepath only
in order to avoid behavior changes as much as possible]
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Mon Nov 15 19:01:56 UTC 2021 on sn-devel-184
This is only ever be called in standalone mode with an MIT realm,
so we don't have a PAC/info3 structure.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This code is only every called in standalone mode on a MIT realm,
it means we never have a PAC and we also don't have winbindd arround.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We should be strict in standalone mode, that we only support MIT realms
without a PAC in order to keep the code sane.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
