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Commit Graph

448 Commits

Author SHA1 Message Date
Tim Beale
fde9f7c81b CVE-2018-16857 dsdb/util: Add better default lockOutObservationWindow
Clearly the lockOutObservationWindow value is important, and using a
default value of zero doesn't work very well.

This patch adds a better default value (the domain default setting of 30
minutes).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13683

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Wed Nov 28 11:31:14 CET 2018 on sn-devel-144
2018-11-28 11:31:14 +01:00
Tim Beale
13014aea13 CVE-2018-16857 dsdb/util: Fix lockOutObservationWindow for PSOs
Fix a remaining place where we were trying to read the
msDS-LockoutObservationWindow as an int instead of an int64.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13683

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-11-28 08:22:25 +01:00
Tim Beale
c7b937c5aa CVE-2018-16857 dsdb/util: Correctly treat lockOutObservationWindow as 64-bit int
Commit 442a38c918 refactored some code into a new
get_lockout_observation_window() function. However, in moving the code,
an ldb_msg_find_attr_as_int64() inadvertently got converted to a
ldb_msg_find_attr_as_int().

ldb_msg_find_attr_as_int() will only work for values up to -2147483648
(about 3.5 minutes in MS timestamp form). Unfortunately, the automated
tests used a low enough timeout that they still worked, however,
password lockout would not work with the Samba default settings.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13683

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-11-28 08:22:25 +01:00
Volker Lendecke
579ce3eb4e dsdb: Slightly simplify samdb_check_password
Avoid an "else" where we have the early return

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Björn Baumbach <bbaumbach@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-11-16 18:35:22 +01:00
Tim Beale
3efb4588ab dsdb: Add dsdb_request_has_control() helper function
Most of the DSDB modules only want to check the existence of a control,
rather than access the control itself. Adding a helper function allows
the code to ask more natural-sounding yes/no questions, and tidies up
an ugly-looking long-line in extended_dn_out.c.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>

Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Fri Oct 12 07:23:26 CEST 2018 on sn-devel-144
2018-10-12 07:23:26 +02:00
Stefan Metzmacher
0e442e0942 s4:dsdb/common: add samdb_domain_guid() helper function
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11517

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-09-04 02:31:27 +02:00
Stefan Metzmacher
c1b0ac95db dsdb:util_trusts: add dsdb_trust_local_tdo_info() helper function
This is similar to dsdb_trust_xref_tdo_info(), but will also work
if we ever support more than one domain in our forest.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11517

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-09-04 02:31:26 +02:00
Stefan Metzmacher
f5f96f558b dsdb/util_trusts: domain_dn is an input parameter of dsdb_trust_crossref_tdo_info()
We should not overwrite it within the function.
Currently it doesn't matter as we don't have multiple domains
within our forest, but that will change in future.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11517

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-09-04 02:31:26 +02:00
Gary Lockyer
1b07f13372 dsdb: add defines for sessionInfo and networkSessionInfo
Replace uses of the string "sessionInfo" with the constant
DSDB_SESSION_INFO, and "networkSessionInfo" with the constant
DSDB_NETWORK_SESSION_INFO.

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-06-09 15:02:11 +02:00
Douglas Bagnall
c2cac449c8 dsdb/util: use parse_guid_string, not sscanf()
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-05-31 01:57:16 +02:00
Tim Beale
706070274d dsdb/rpc: Update effective badPwdCount to use PSO settings
The lockOutObservationWindow is used to calculate the badPwdCount. When
a PSO applies to a user, we want to use the PSO's lockout-observation
window rather the the default domain setting.

This is finally enough to get some of the PSO password_lockout tests
to pass.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-23 06:55:30 +02:00
Tim Beale
442a38c918 dsdb/auth: Use PSO settings for lockOutThreshold/Duration
If a PSO applies to a user, use its lockOutThreshold/Duration settings
instead of the domain setting. When we lookup a user, we now include the
msDS-ResultantPSO attribute. If the attribute is present for a user,
then we lookup the corresponding PSO object to get the lockOutThreshold/
Duration settings.

Note: This is not quite enough to make the PSO lockout tests pass, as
msDS-User-Account-Control-Computed is still constructed based on the
domain lockoutDuration setting rather than the PSO.

Updating the password_hash.c code properly will be done in a subsequent
commit.

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2018-05-23 06:55:30 +02:00
Gary Lockyer
79ba530aaf dsdb: refactor password attibutes to constant
The password attributes are defined as literal in two places in the
password_hash code.  They will also be needed to support password change
logging. This patch replaces the individual definitions with a shared
constant.

Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-05-10 20:02:22 +02:00
Garming Sam
3fcb768057 dsdb: Allow the disable of the Windows server site fallback
A usage in GetDCNameEx2 could return the wrong result. This may need to
be fixed in other places.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13365

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-05-04 06:12:10 +02:00
Stefan Metzmacher
e9ace1852f s4:dsdb: add dsdb_trust_domain_by_{sid,name}()
This gets the lsa_ForestTrustDomainInfo for the searched
domain as well as the lsa_TrustDomainInfoInfoEx for the
direct trust (which might be the same for external trust or
the forest root domain).

Bug: https://bugzilla.samba.org/show_bug.cgi?id=13286

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-02-21 14:19:18 +01:00
Stefan Metzmacher
f362387352 s4:dsdb: add dsdb_trust_search_tdo_by_sid() helper function
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-01-13 12:55:07 +01:00
kkplein
ce2ca7fa89 Update util.c to include DBGC_AUTH class
Signed-off-by: Mourik Jan C Heupink <heupink@merit.unu.edu>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2018-01-08 03:34:17 +01:00
Tim Beale
ed2fc52243 drs: Add basic GET_TGT support
This adds basic DRS_GET_TGT support. If the GET_TGT flag is specified
then the server will use the object cache to store the objects it sends
back. If the target object for a linked attribute is not in the cache
(i.e. it has not been sent already), then it is added to the response
message.

Note that large numbers of linked attributes will not be handled well
yet - the server could potentially try to send more than will fit in a
single repsonse message.

Also note that the client can sometimes set the GET_TGT flag even if the
server is still sending the links last. In this case, we know the client
supports GET_TGT so it's safe to send the links interleaved with the
source objects (the alternative of fetching the target objects but not
sending the links until last doesn't really make any sense).

Signed-off-by: Tim Beale <timbeale@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2017-09-18 05:51:24 +02:00
Andrew Bartlett
8d8d31eb2b dsdb: Add missing \n to debug
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2017-09-07 06:56:27 +02:00
Andrew Bartlett
7fdeea0f30 dsdb: Add comment showing where the normal password rules are applied
This looks like a footnote, but is actually where the default password rules are applied.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
2017-08-30 10:48:19 +02:00
Garming Sam
0431dc5ce9 dsdb: Add a samdb_dns_host_name which avoids searching
This ideally should also be used in rootDSE.

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2017-06-22 08:56:22 +02:00
Andrew Bartlett
438496220f dsdb: Ensure replication of renames works in schema partition
This caused failures against vampire_dc (on large-dc), likely due to
more frequent replication propagating the record before it was renamed.
The DC ran out of RIDs and RID allocation causes schema replication,
which failed.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12841
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2017-06-15 01:24:25 +02:00
Garming Sam
1816c84b29 dsdb: Allow parsed_dn_find to have a prefixed blob match
This allows us to search against binary DN using only the attributeID in
the case of msDS-RevealedUsers (as it appears right at the beginning).

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2017-03-13 05:10:12 +01:00
Garming Sam
608307745e dsdb: Move parsed_dn_find into a common location
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2017-03-13 05:10:12 +01:00
Chris Lamb
875f45b3f1 Correct "hexidecimal" typos.
Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2017-02-22 08:26:23 +01:00
Jeremy Allison
d333c56700 source4: Change to use lib/util/access functions.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12419

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>

Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Wed Nov 16 16:35:12 CET 2016 on sn-devel-144
2016-11-16 16:35:12 +01:00
Günther Deschner
89cc81ab0e werror: replace WERR_GENERAL_FAILURE with WERR_GEN_FAILURE in source4/dsdb/common/util.c
Guenther

Signed-off-by: Guenther Deschner <gd@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-09-28 00:04:21 +02:00
Andrew Bartlett
3d05128da0 dsdb: Avoid ldb_dn_validate() call on trusted input when not required
This call is very costly, because of the time required
to strictly check the syntax of the extended DN components.

This allows a 20% decrease in time taken for some link-heavy tests.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Tue Sep 27 20:47:34 CEST 2016 on sn-devel-144
2016-09-27 20:47:34 +02:00
Andreas Schneider
016f49997c dsdb: Do not use free'd memory.
The msg has already been free'd at this point so we need to print the
user_dn which gets assigned to msg->dn.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-09-09 00:32:12 +02:00
Andrew Bartlett
4e0ac09ef6 dsdb: Rework kcc_deleted() into dsdb_garbage_collect_tombstones()
This is so that in a future commit, we can wrap this in python and allow it to be called
from outside the samba server processs.

This requires that we rework the callers and internals to avoid reference to
private data structures of the KCC service.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-09-01 05:49:14 +02:00
Andrew Bartlett
eeb594ce93 dsdb: Limit potential stack use when parsing extended DNs
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-07-28 10:06:12 +02:00
Douglas Bagnall
5ce969d0c7 dsdb: add vanish links control
Normally linked attributes are deleted by marking them as with RMD flags,
but sometimes we want them to vanish without trace. At those times we
set the DSDB_CONTROL_REPLMD_VANISH_LINKS control.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Signed-off-by: Bob Campbell <bobcampbell@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Pair-programmed-with: Andrew Bartlett <abartlet@samba.org>
2016-07-15 10:01:28 +02:00
Stefan Metzmacher
272d6478a2 s4:dsdb/common: prepare dsdb_user_obj_set_defaults() for tombstone reanimation
accountExpires gets a different value, logonHours is not updated,
operatorCount and adminCount are added.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-07-09 15:06:19 +02:00
Stefan Metzmacher
b0501a1cb0 s4:dsdb/common: add a replication metadata stamp for an empty logonHours attribute
When a user object is created it gets a metadata stamp for logonHours,
while the logonHours attribute has no value.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-07-08 10:01:20 +02:00
Andreas Schneider
38b7bed93c s4-dsdb: Add missing header file for write() and close()
This fixes compilation with gcc 4.8.5.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2016-07-06 19:07:16 +02:00
Bob Campbell
21295155cc check_password_script: Add a DEBUG message for timeouts
Signed-off-by: Bob Campbell <bobcampbell@catalyst.net.nz>
Pair-programmed-with: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-07-05 00:00:15 +02:00
Garming Sam
878fa6ef7d check-password-script: Allow AD to execute these scripts
In contrast to source3, this is run as root and without substitution.

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-07-05 00:00:14 +02:00
Stefan Metzmacher
a35a5e9022 s4:dsdb: add some const to {samdb_result,dsdb}_effective_badPwdCount()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-06-30 03:30:24 +02:00
Stefan Metzmacher
e81d25a870 s4:dsdb/common: remove unused samdb_result_force_password_change()
The logic is incomplete and the correct logic is already available
via the constructed "msDS-UserPasswordExpiryTimeComputed" attribute.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11441

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-06-30 03:30:23 +02:00
Stefan Metzmacher
3b15a7a16b s4:dsdb/common: add some const to helper functions
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9654

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-06-27 05:00:16 +02:00
Stefan Metzmacher
5980d123b8 s4:dsdb/samldb: add DSDB_CONTROL_PASSWORD_DEFAULT_LAST_SET_OID when defaulting pwdLastSet=0
BUG: https://bugzilla.samba.org/show_bug.cgi?id=9654

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-06-27 05:00:16 +02:00
Andrew Bartlett
bbf0532f07 dsdb: Avoid talloc() calls in dsdb_get_extended_dn_*()
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-27 00:18:18 +02:00
Andreas Schneider
f01f424853 s4-dsdb: Fix a possible NULL pointer dereference
Detected by clang compiler.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-06-22 19:25:20 +02:00
Andrew Bartlett
5967852aa0 repl: Allow GetNCChanges DRSUAPI_EXOP_REPL_OBJ to succeed against a deleted object
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
2016-06-06 08:50:09 +02:00
Douglas Bagnall
dfa9a5c928 dsdb/common/util: be careful about zero length string lists
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-05-10 01:43:14 +02:00
Douglas Bagnall
cc6ed8f126 dsdb/common/util: remove some unnecessary str_list_length()s
Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2016-05-10 01:43:14 +02:00
Michael Adam
476672b647 dlist: remove unneeded type argument from DLIST_ADD_END()
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-02-06 21:48:17 +01:00
Andreas Schneider
8a9493f927 s4-dsdb: Add debug message if we have a ldb error string
When trying to change the password with kpasswd, the KDC returns
"Unspecified password quality failure". Because we do not get the ldb
error which is e.g.: password is too young to change!

This way at least the admin can find out what is going on.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Tue Feb  2 11:49:51 CET 2016 on sn-devel-144
2016-02-02 11:49:51 +01:00
Stefan Metzmacher
67d550653f s4:dsdb/common: make it possible to find a reason for LDB_ERR_NO_SUCH_OBJECT
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-02-01 09:53:10 +01:00
Stefan Metzmacher
cff0978495 s4:dsdb/common: add dsdb_module_werror() helper function
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-02-01 09:53:10 +01:00