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This make this funciton the gatekeeper between the wire format and the
internal struct ldb_dn, checking if the DN exists and which NC
it belongs to along the way, and presenting only a DB-returned
DN for internal processing.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10635
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This reuses the search done for dsdb_find_nc_root() to normalise the DN.
This will allow a GUID-input DN to be compared safely with a RID Manager DN
or Naming Context.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=10635
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This function already exists in bind9 but takes different arguments, so when
the DLZ is loaded and this function is called bind crashes:
named[1523]: samba_dlz: allowing update of signer=DESKTOP-8BUKMBK\$\@AFOREST.AD name=118.101.168.192.in-addr.arpa tcpaddr=192.168.101.118 type=PTR key=1264-ms-7.1-2ac9.9ef238e1-9747-11ed-9f95-525400dc6981/159/0
named[1523]: samba_dlz: allowing update of signer=DESKTOP-8BUKMBK\$\@AFOREST.AD name=118.101.168.192.in-addr.arpa tcpaddr=192.168.101.118 type=PTR key=1264-ms-7.1-2ac9.9ef238e1-9747-11ed-9f95-525400dc6981/159/0
named[1523]: client @0x7f26caa90f68 192.168.101.118#58223/key DESKTOP-8BUKMBK\$\@AFOREST.AD: updating zone '101.168.192.in-addr.arpa/NONE': deleting rrset at '118.101.168.192.in-addr.ar
named[1523]: name.c:664: REQUIRE(((name1) != ((void *)0) && ((const isc__magic_t *)(name1))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n'))))) failed, back trace
Backtrace:
#0 0x00007f2716c957ec in __pthread_kill_implementation () from /lib64/libc.so.6
#1 0x00007f2716c42816 in raise () from /lib64/libc.so.6
#2 0x00007f2716c2b81c in abort () from /lib64/libc.so.6
#3 0x000055d4de847995 in assertion_failed (file=<optimized out>, line=<optimized out>,
type=<optimized out>, cond=<optimized out>) at /usr/src/debug/bind-9.18.10/bin/named/main.c:237
#4 0x00007f27176388fc in isc_assertion_failed (file=file@entry=0x7f27173b0df6 "name.c",
line=line@entry=664, type=type@entry=isc_assertiontype_require,
cond=cond@entry=0x7f27173b0268 "((name1) != ((void *)0) && ((const isc__magic_t *)(name1))->magic == ((('D') << 24 | ('N') << 16 | ('S') << 8 | ('n'))))")
at /usr/src/debug/bind-9.18.10/lib/isc/assertions.c:48
#5 0x00007f27172946f9 in dns_name_equal (name1=<optimized out>, name2=<optimized out>)
at /usr/src/debug/bind-9.18.10/lib/dns/name.c:664
**** Here bind's dns_name_equal() is called instead of samba's dns_name_equal() ****
#6 0x00007f27077ad6f2 in dns_record_match (rec1=0x7f26f8042d70, rec2=0x7f26f8044d10)
at ../../source4/dns_server/dnsserver_common.c:1346
#7 0x00007f271404732c in b9_record_match (rec1=0x7f26f8042d70, rec2=0x7f26f8044d10)
at ../../source4/dns_server/dlz_bind9.c:1830
#8 0x00007f2714047daa in dlz_subrdataset (name=0x7f2706ff82f0 "118.101.168.192.in-addr.arpa",
rdatastr=0x7f26c9c10000 "118.101.168.192.in-addr.arpa.\t1200\tIN\tPTR\tDESKTOP-8BUKMBK.aforest.ad.",
dbdata=0x7f271003d300, version=0x7f26f8044b20) at ../../source4/dns_server/dlz_bind9.c:2077
#9 0x000055d4de84afb4 in dlopen_dlz_subrdataset (name=0x7f2706ff82f0 "118.101.168.192.in-addr.arpa",
rdatastr=<optimized out>, driverarg=<optimized out>, dbdata=0x7f270430f680, version=<optimized out>)
at /usr/src/debug/bind-9.18.10/bin/named/dlz_dlopen_driver.c:483
#10 0x00007f271738e734 in modrdataset.constprop.0 (db=0x7f2704291740, node=0x7f26c9c006e0,
version=0x7f26f8044b20, rdataset=0x7f2706ff8830,
mod_function=0x55d4de84af80 <dlopen_dlz_subrdataset>, options=<optimized out>)
at /usr/src/debug/bind-9.18.10/lib/dns/sdlz.c:1107
#11 0x00007f2717251855 in diff_apply (diff=diff@entry=0x7f2706ff8df0, db=db@entry=0x7f2704291740,
ver=ver@entry=0x7f26f8044b20, warn=warn@entry=true) at /usr/src/debug/bind-9.18.10/lib/dns/diff.c:370
#12 0x00007f2717251c8a in dns_diff_apply (diff=diff@entry=0x7f2706ff8df0, db=db@entry=0x7f2704291740,
ver=ver@entry=0x7f26f8044b20) at /usr/src/debug/bind-9.18.10/lib/dns/diff.c:465
#13 0x00007f2717d105aa in do_one_tuple (tuple=tuple@entry=0x7f2706ff8e50, db=db@entry=0x7f2704291740,
ver=ver@entry=0x7f26f8044b20, diff=diff@entry=0x7f2706ff9400)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:454
#14 0x00007f2717d10fff in update_one_rr (rdata=0x7f2706ff8ee8, ttl=<optimized out>,
name=<optimized out>, op=DNS_DIFFOP_DEL, diff=0x7f2706ff9400, ver=0x7f26f8044b20, db=0x7f2704291740)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:505
#15 delete_if_action (data=<optimized out>, rr=0x7f2706ff8ee0)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1427
#16 0x00007f2717d10ccd in foreach_rr (db=0x7f2704291740, ver=<optimized out>, name=0x7f26caa61d00,
type=<optimized out>, covers=<optimized out>,
rr_action=rr_action@entry=0x7f2717d10f60 <delete_if_action>, rr_action_data=0x7f2706ff9280)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:736
#17 0x00007f2717d10e76 in delete_if (predicate=predicate@entry=0x7f2717d0fb10 <true_p>,
db=<optimized out>, ver=<optimized out>, name=<optimized out>, type=<optimized out>,
covers=<optimized out>, update_rr=0x7f2706ff94b0, diff=0x7f2706ff9400)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:1454
#18 0x00007f2717d1bccd in update_action (task=<optimized out>, event=<optimized out>)
at /usr/src/debug/bind-9.18.10/lib/ns/update.c:3299
#19 0x00007f271765eb4c in task_run (task=0x7f27155ccf00)
at /usr/src/debug/bind-9.18.10/lib/isc/task.c:823
#20 isc_task_run (task=0x7f27155ccf00) at /usr/src/debug/bind-9.18.10/lib/isc/task.c:904
#21 0x00007f271762cb12 in isc__nm_async_task (worker=0x7f2716236560, ev0=0x7f26caa07000)
at netmgr/netmgr.c:840
#22 process_netievent (worker=worker@entry=0x7f2716236560, ievent=0x7f26caa07000) at netmgr/netmgr.c:918
#23 0x00007f271762d197 in process_queue (worker=worker@entry=0x7f2716236560,
type=type@entry=NETIEVENT_TASK) at netmgr/netmgr.c:1011
#24 0x00007f271762d3b3 in process_all_queues (worker=0x7f2716236560) at netmgr/netmgr.c:765
#25 async_cb (handle=0x7f27162368c0) at netmgr/netmgr.c:794
#26 0x00007f2717c4cb0d in uv__async_io (loop=0x7f2716236570, w=<optimized out>, events=<optimized out>)
at src/unix/async.c:163
#27 0x00007f2717c6825d in uv__io_poll (loop=0x7f2716236570, timeout=<optimized out>)
at src/unix/epoll.c:374
#28 0x00007f2717c5247a in uv__io_poll (timeout=<optimized out>, loop=0x7f2716236570)
at src/unix/udp.c:122
#29 uv_run (loop=loop@entry=0x7f2716236570, mode=mode@entry=UV_RUN_DEFAULT) at src/unix/core.c:406
#30 0x00007f271762d834 in nm_thread (worker0=0x7f2716236560) at netmgr/netmgr.c:696
#31 0x00007f27176627f5 in isc__trampoline_run (arg=0x55d4dfe3ad70)
at /usr/src/debug/bind-9.18.10/lib/isc/trampoline.c:189
#32 0x00007f2716c9398d in start_thread () from /lib64/libc.so.6
#33 0x00007f2716d19344 in clone () from /lib64/libc.so.6
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14030
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Samuel Cabrero <scabrero@samba.org>
Autobuild-Date(master): Thu Jan 19 10:20:27 UTC 2023 on atb-devel-224
Ensuring pointers are always initialised simplifies the code and avoids
compilation errors with FORTIFY_SOURCE=2.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Jeremy Allison <jra@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>
To be used in smbXsrv_open.c, for this we need a lower bound.
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Will be used later by s3 netlogon server.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Samuel Cabrero <scabrero@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
By default we'll now require schannel connections with
privacy/sealing/encryption.
But we allow exceptions for specific computer/trust accounts.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15260
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
It's enough to warn the admin once per connection.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll soon add some additional contraints in dcesrv_netr_check_schannel(),
which are also required for dcesrv_netr_LogonSamLogonEx().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will allow us to reuse the function in other places.
As it will also get some additional checks soon.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This allows the admin to notice what's wrong in order to adjust the
configuration if required.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This makes it more flexible when we change the global default to
'reject md5 servers = yes'.
'allow nt4 crypto = no' is already the default.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll soon make it possible to use 'reject md5 servers:CLIENTACCOUNT$ = no',
which means we'll need use the account name from our SAM.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We'll soon make it possible to use 'reject md5 servers:CLIENTACCOUNT$ = no',
which means we'll need the downgrade detection in more places.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
In order to avoid generating useless debug messages during make test,
we will use 'CVE_2020_1472:warn_about_unused_debug_level = 3'
and 'CVE_2020_1472:error_debug_level = 2' in order to avoid schannel warnings.
Review with: git show -w
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will simplify the following changes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will simplify the following changes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will simplify the following changes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will simplify the following changes.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15240
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
prior to this commit return of samdb_set_password_aes was set to
NT_STATUS_WRONG_PASSWORD on failure. Useful status that should be
returned such as NT_STATUS_PASSWORD_RESTRICTION are swallowed here
otherwise (and in this case can be partially responsible for failures
in test samba.tests.auth_log_pass_change (with later gnutls)
Signed-off-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
This emulates older verions of Samba that fail to implement
DRSUAPI_DRS_GET_ANC correctly and totally fails to support
DRSUAPI_DRS_GET_TGT.
This will allow testing of a client-side fallback, allowing migration
from sites that run very old Samba versions over DRSUAPI (currently
the only option is to attempt an in-place upgrade).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15189
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Now the initial account search is performed under the transaction,
ensuring the overall password change is atomic. We set DSDB_SESSION_INFO
to drop our privileges to those of the user before we perform the actual
password change, and restore them afterwards if we need to update the
bad password count.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
We don't (and shouldn't) need system prvileges to perform the password
change, so drop to the privileges of the user by setting
DSDB_SESSION_INFO. We need to reuse the same sam_ctx: creating a new one
with only user privileges would not work, because any database
modifications would be blocked by the transaction taken out on the
original context.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This helps the bad password and audit log handling code as it
allows assumptions to be made about the attributes found in
the variable "msg", such as that DSDB_SEARCH_SHOW_EXTENDED_DN
was used.
This ensures we can re-search on the DN via the embedded GUID,
which in in turn rename-proof.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
If the account has been locked out in the meantime (indicated by
NT_STATUS_ACCOUNT_LOCKED_OUT), we should return the appropriate error
code.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This helps the bad password and audit log handling code as it
allows assumptions to be made about the attributes found in
the variable "msg", such as that DSDB_SEARCH_SHOW_EXTENDED_DN
was used.
This ensures we can re-search on the DN via the embedded GUID,
which in in turn rename-proof.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14611
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andreas Schneider <asn@samba.org>
This ensures that the database update can be attributed to the
workstation account, rather than to the anonymous SID, in the audit
logs.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14833
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Thu Jul 28 23:41:27 UTC 2022 on sn-devel-184
This function allows us to connect to samdb as a particular user by
passing in that user's session info.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14833
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This allows us to perform validation on a client-specified dNSHostName
value, to ensure that it matches the sAMAccountName.
We might not have any rights to modify the account, so pass the control
FORCE_ALLOW_VALIDATED_DNS_HOSTNAME_SPN_WRITE which allows us to perform
a validated write to dNSHostName and servicePrincipalName (and
unvalidated writes to other attributes, such as operatingSystem).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14833
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Even when there is no old DNS hostname present.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14833
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This check is not exhaustive (it does not check the suffix of the
dNSHostName), and should be covered by a validated write check in
acl_modify().
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14833
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
This aims to minimise usage of the error-prone pattern of searching for
a just-added message element in order to make modifications to it (and
potentially finding the wrong element).
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15009
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Since memcmp_const_time() doesn't act as an exact replacement for
memcmp(), and its return value is only ever compared with zero, simplify
it and emphasize the intention of checking equality by returning a bool
instead.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Since data_blob_cmp_const_time() doesn't act as an exact replacement for
data_blob_cmp(), and its return value is only ever compared with zero,
simplify it and emphasize the intention of checking equality by
returning a bool instead.
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This helps to avoid timing attacks.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15010
Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
