1 =============================
2 Release Notes for Samba 4.8.2
4 =============================
7 This is the latest stable release of the Samba 4.8 release series.
9 Major bug fixes include:
10 ------------------------
12 o After update to 4.8.0 DC failed with "Failed to find our own
13 NTDS Settings objectGUID" (bug #13335).
18 o Jeremy Allison <jra@samba.org>
19 * BUG 13380: s3: smbd: Generic fix for incorrect reporting of stream dos
20 attributes on a directory.
21 * BUG 13412: ceph: VFS: Add asynchronous fsync to ceph module, fake using
23 * BUG 13419: s3: libsmbclient: Fix hard-coded connection error return of
26 o Andrew Bartlett <abartlet@samba.org>
27 * BUG 13306: ldb: Release ldb 1.3.3:
28 * Fix failure to upgrade to the GUID index DB format.
29 * Add tests for GUID index behaviour.
30 * BUG 13420: s4-lsa: Fix use-after-free in LSA server.
31 * BUG 13430: winbindd: Do re-connect if the RPC call fails in the passdb
34 o Ralph Boehme <slow@samba.org>
35 * BUG 13416: s3:cleanupd: Sends MSG_SMB_UNLOCK twice to interested peers.
36 * BUG 13414: s3:cleanupd: Use MSG_SMB_BRL_VALIDATE to signal cleanupd
37 unclean process shutdown.
39 o David Disseldorp <ddiss@samba.org>
40 * BUG 13425: vfs_ceph: add fake async pwrite/pread send/recv hooks.
42 o Amitay Isaacs <amitay@gmail.com>
43 * BUG 13411: ctdb-client: Remove ununsed functions from old client code.
45 o Björn Jacke <bjacke@samba.org>
46 * BUG 13395: printing: Return the same error code as windows does on upload
49 o Gary Lockyer <gary@catalyst.net.nz>
50 * BUG 13335: After update to 4.8.0 DC failed with "Failed to find our own
51 NTDS Settings objectGUID".
53 o Stefan Metzmacher <metze@samba.org>
54 * BUG 13400: nsswitch: Fix memory leak in winbind_open_pipe_sock() when the
55 privileged pipe is not accessable.
56 * BUG 13420: s4:lsa_lookup: remove TALLOC_FREE(state) after all
57 dcesrv_lsa_Lookup{Names,Sids}_base_map() calls.
59 o Vandana Rungta <vrungta@amazon.com>
60 * BUG 13424: s3: VFS: Fix memory leak in vfs_ceph.
62 o Christof Schmitt <cs@samba.org>
63 * BUG 13407: rpc_server: Fix NetSessEnum with stale sessions.
65 o Andreas Schneider <asn@samba.org>
66 * BUG 13417: s3:smbspool: Fix cmdline argument handling.
69 #######################################
70 Reporting bugs & Development Discussion
71 #######################################
73 Please discuss this release on the samba-technical mailing list or by
74 joining the #samba-technical IRC channel on irc.freenode.net.
76 If you do report problems then please try to send high quality
77 feedback. If you don't provide vital information to help us track down
78 the problem then you will probably be ignored. All bug reports should
79 be filed under the "Samba 4.1 and newer" product in the project's Bugzilla
80 database (https://bugzilla.samba.org/).
83 ======================================================================
84 == Our Code, Our Bugs, Our Responsibility.
86 ======================================================================
89 Release notes for older releases follow:
90 ----------------------------------------
92 =============================
93 Release Notes for Samba 4.8.1
95 =============================
98 This is the latest stable release of the Samba 4.8 release series.
104 o Jeremy Allison <jra@samba.org>
105 * BUG 13244: s3: ldap: Ensure the ADS_STRUCT pointer doesn't get freed on
106 error, we don't own it here.
107 * BUG 13270: s3: smbd: Fix possible directory fd leak if the underlying OS
108 doesn't support fdopendir().
109 * BUG 13319: Round-tripping ACL get/set through vfs_fruit will increase the
110 number of ACE entries without limit.
111 * BUG 13347: s3: smbd: SMB2: Add DBGC_SMB2_CREDITS class to specifically
113 * BUG 13358: s3: smbd: Files or directories can't be opened DELETE_ON_CLOSE
114 without delete access.
115 * BUG 13372: s3: smbd: Fix memory leak in vfswrap_getwd().
116 * BUG 13375: s3: smbd: Unix extensions attempts to change wrong field in
119 o Björn Baumbach <bb@sernet.de>
120 * BUG 13337: ms_schema/samba-tool visualize: Fix python2.6 incompatibility.
122 o Timur I. Bakeyev <timur@iXsystems.com>
123 * BUG 13352: Fix invocation of gnutls_aead_cipher_encrypt().
125 o Ralph Boehme <slow@samba.org>
126 * BUG 13328: Windows 10 cannot logon on Samba NT4 domain.
127 * BUG 13332: winbindd: Recover loss of netlogon secure channel in case the
129 * BUG 13363: s3:smbd: Don't use the directory cache for SMB2/3.
131 o Amitay Isaacs <amitay@gmail.com>
132 * BUG 13356: ctdb-client: Fix bugs in client code.
133 * BUG 13359: ctdb-scripts: Drop "net serverid wipe" from 50.samba event
136 o Lutz Justen <ljusten@google.com>
137 * BUG 13368: s3: lib: messages: Don't use the result of sec_init() before
140 o Volker Lendecke <vl@samba.org>
141 * BUG 13273: libads: Fix the build '--without-ads'.
142 * BUG 13332: winbind: Keep "force_reauth" in invalidate_cm_connection,
143 add 'smbcontrol disconnect-dc'.
144 * BUG 13343: vfs_virusfilter: Fix CIDs 1428738-1428740.
145 * BUG 13367: dsdb: Fix CID 1034966 Uninitialized scalar variable.
146 * BUG 13370: rpc_server: Fix core dump in dfsgetinfo.
147 * BUG 13382: smbclient: Fix notify.
149 o Stefan Metzmacher <metze@samba.org>
150 * BUG 13215: Fix smbd panic if the client-supplied channel sequence number
152 * BUG 13328: Windows 10 cannot logon on Samba NT4 domain.
153 * BUG 13342: lib/util: Remove unused '#include <sys/syscall.h>' from
155 * BUG 13343: Fix build errors with cc from developerstudio 12.5 on Solaris.
156 * BUG 13344: Fix the picky-developer build on FreeBSD 11.
157 * BUG 13345: s3:modules: Fix the build of vfs_aixacl2.c.
160 * BUG 13338: s3:smbd: map nterror on smb2_flush errorpath.
162 o Noel Power <noel.power@suse.com>
163 * BUG 13341: lib:replace: Fix linking when libtirpc-devel overwrites system
166 o Christof Schmitt <cs@samba.org>
167 * BUG 13312: winbindd: 'wbinfo --name-to-sid' returns misleading result on
170 o Andreas Schneider <asn@samba.org>
171 * BUG 13376: s3:passdb: Do not return OK if we don't have pinfo set up.
173 o Eric Vannier <evannier@google.com>
174 * BUG 13302: Allow AESNI to be used on all processor supporting AESNI.
177 #######################################
178 Reporting bugs & Development Discussion
179 #######################################
181 Please discuss this release on the samba-technical mailing list or by
182 joining the #samba-technical IRC channel on irc.freenode.net.
184 If you do report problems then please try to send high quality
185 feedback. If you don't provide vital information to help us track down
186 the problem then you will probably be ignored. All bug reports should
187 be filed under the "Samba 4.1 and newer" product in the project's Bugzilla
188 database (https://bugzilla.samba.org/).
191 ======================================================================
192 == Our Code, Our Bugs, Our Responsibility.
194 ======================================================================
197 ----------------------------------------------------------------------
200 =============================
201 Release Notes for Samba 4.8.0
203 =============================
206 This is the first stable release of the Samba 4.8 release series.
207 Please read the release notes carefully before upgrading.
213 New GUID Index mode in sam.ldb for the AD DC
214 --------------------------------------------
216 Users who upgrade a Samba AD DC in-place will experience a short delay
217 in the first startup of Samba while the sam.ldb is re-indexed.
219 Unlike in previous releases a transparent downgrade is not possible.
220 If you wish to downgrade such a DB to a Samba 4.7 or earlier version,
221 please run the source4/scripting/bin/sambaundoguididx script first.
223 Domain member setups require winbindd
224 -------------------------------------
226 Setups with "security = domain" or "security = ads" require a
227 running 'winbindd' now. The fallback that smbd directly contacts
228 domain controllers is gone.
230 smbclient reparse point symlink parameters reversed
231 ---------------------------------------------------
233 See the more detailed description below.
235 Changed trusted domains listing with wbinfo -m --verbose
236 --------------------------------------------------------
238 See the more detailed description below.
243 New GUID Index mode in sam.ldb for the AD DC
244 --------------------------------------------
246 The new layout used for sam.ldb is GUID, rather than DN oriented.
247 This provides Samba's Active Directory Domain Controller with a faster
248 database, particularly at larger scale.
250 The underlying DB is still TDB, simply the choice of key has changed.
252 The new mode is not optional, so no configuration is required. Older
253 Samba versions cannot read the new database (see the upgrade
259 Adds Group Policy support for the Samba kdc. Applies password policies
260 (minimum/maximum password age, minimum password length, and password
261 complexity) and kerberos policies (user/service ticket lifetime and
264 Adds the samba_gpoupdate script for applying and unapplying
265 policy. Can be applied automatically by setting
267 'apply group policies = yes'.
269 Time Machine Support with vfs_fruit
270 -----------------------------------
272 Samba can be configured as a Time Machine target for Apple Mac devices
273 through the vfs_fruit module. When enabling a share for Time Machine
274 support the relevant Avahi records to support discovery will be published
275 for installations that have been built against the Avahi client library.
277 Shares can be designated as a Time Machine share with the following setting:
279 'fruit:time machine = yes'
281 Support for lower casing the MDNS Name
282 --------------------------------------
284 Allows the server name that is advertised through MDNS to be set to the
285 hostname rather than the Samba NETBIOS name. This allows an administrator
286 to make Samba registered MDNS records match the case of the hostname
287 rather than being in all capitals.
289 This can be set with the following settings:
296 Attributes deemed to be sensitive are now encrypted on disk. The sensitive
297 values are currently:
299 msDS-ExecuteScriptPassword
307 supplementalCredentials
313 This encryption is enabled by default on a new provision or join, it
314 can be disabled at provision or join time with the new option
315 '--plaintext-secrets'.
317 However, an in-place upgrade will not encrypt the database.
319 Once encrypted, it is not possible to do an in-place downgrade (eg to
320 4.7) of the database. To obtain an unencrypted copy of the database a
321 new DC join should be performed, specifying the '--plaintext-secrets'
324 The key file "encrypted_secrets.key" is created in the same directory
325 as the database and should NEVER be disclosed. It is included by the
328 Active Directory replication visualisation
329 ------------------------------------------
331 To work out what is happening in a replication graph, it is sometimes
332 helpful to use visualisations. We introduce a samba-tool subcommand to
333 write Graphviz dot output and generate text-based heatmaps of the
334 distance in hops between DCs.
336 There are two subcommands, two graphical modes, and (roughly) two modes of
337 operation with respect to the location of authority.
339 `samba-tool visualize ntdsconn` looks at NTDS Connections.
340 `samba-tool visualize reps` looks at repsTo and repsFrom objects.
342 In '--distance' mode (default), the distances between DCs are shown in
343 a matrix in the terminal. With '--color=yes', this is depicted as a
344 heatmap. With '--utf8' it is a lttle prettier.
346 In '--dot' mode, Graphviz dot output is generated. When viewed using
347 dot or xdot, this shows the network as a graph with DCs as vertices
348 and connections edges. Certain types of degenerate edges are shown in
349 different colours or line-styles.
351 smbclient reparse point symlink parameters reversed
352 ---------------------------------------------------
354 A bug in smbclient caused the 'symlink' command to reverse the
355 meaning of the new name and link target parameters when creating a
356 reparse point symlink against a Windows server. As this is a
357 little used feature the ordering of these parameters has been
358 reversed to match the parameter ordering of the UNIX extensions
359 'symlink' command. The usage message for this command has also
360 been improved to remove confusion.
365 The dependency to global list of trusted domains within
366 the winbindd processes has been reduced a lot.
368 The construction of that global list is not reliable and often
369 incomplete in complex trust setups. In most situations the list is not needed
370 any more for winbindd to operate correctly. E.g. for plain file serving via SMB
371 using a simple idmap setup with autorid, tdb or ad. However some more complex
372 setups require the list, e.g. if you specify idmap backends for specific
373 domains. Some pam_winbind setups may also require the global list.
375 If you have a setup that doesn't require the global list, you should set
376 "winbind scan trusted domains = no".
378 Improved support for trusted domains (as AD DC)
379 -----------------------------------------------
381 The support for trusted domains/forests has improved a lot.
383 External domain trusts, as well a transitive forest trusts,
384 are supported in both directions (inbound and outbound)
385 for Kerberos and NTLM authentication now.
387 The LSA LookupNames and LookupSids implementations
388 support resolving names and sids from trusts domains/forest
389 now. This is important in order to allow Samba based
390 domain members to make use of the trust.
392 However there are currently still a few limitations:
394 - It's not possible to add users/groups of a trusted domain
395 into domain groups. So group memberships are not expanded
397 See https://bugzilla.samba.org/show_bug.cgi?id=13300
398 - Both sides of the trust need to fully trust each other!
399 - No SID filtering rules are applied at all!
400 - This means DCs of domain A can grant domain admin rights
402 - Selective (CROSS_ORIGANIZATION) authentication is
403 not supported. It's possible to create such a trust,
404 but the KDC and winbindd ignore them.
406 Changed trusted domains listing with wbinfo -m --verbose
407 --------------------------------------------------------
409 The trust properties printed by wbinfo -m --verbose have been changed to
410 correctly reflect the view of the system where wbinfo is executed.
412 The trust type field in particular can show additional values that correctly
413 reflect the type of the trust: "Local" for the local SAM and BUILTIN,
414 "Workstation" for a workstation trust to the primary domain, "RWDC" for the SAM
415 on a AD DC, "RODC" for the SAM on a read-only DC, "PDC" for the SAM on a
416 NT4-style DC, "Forest" for a AD forest trust and "External" for quarantined,
417 external or NT4-style trusts.
419 Indirect trusts are shown as "Routed" including the routing domain.
421 Example, on a AD DC (SDOM1):
423 Domain Name DNS Domain Trust Type Transitive In Out
425 SDOM1 sdom1.site RWDC
426 WDOM3 wdom3.site Forest Yes No Yes
427 WDOM2 wdom2.site Forest Yes Yes Yes
428 SUBDOM31 subdom31.wdom3.site Routed (via WDOM3)
429 SUBDOM21 subdom21.wdom2.site Routed (via WDOM2)
431 Same setup, on a member of WDOM2:
433 Domain Name DNS Domain Trust Type Transitive In Out
436 WDOM2 wdom2.site Workstation Yes No Yes
437 WDOM1 wdom1.site Routed (via WDOM2)
438 WDOM3 wdom3.site Routed (via WDOM2)
439 SUBDOM21 subdom21.wdom2.site Routed (via WDOM2)
440 SDOM1 sdom1.site Routed (via WDOM2)
441 SUBDOM11 subdom11.wdom1.site Routed (via WDOM2)
443 The list of trusts may be incomplete and additional domains may appear as
444 "Routed" if a user of an unknown domain is successfully authenticated.
446 VirusFilter VFS module
447 ----------------------
449 This new module integrates with Sophos, F-Secure and ClamAV anti-virus
450 software to provide scanning and filtering of files on a Samba share.
456 'net serverid' commands removed
457 -------------------------------
459 The two commands 'net serverid list' and 'net serverid wipe' have been
460 removed, because the file serverid.tdb is not used anymore.
462 'net serverid list' can be replaced by listing all files in the
463 subdirectory "msg.lock" of Samba's "lock directory". The unique id
464 listed by 'net serverid list' is stored in every process' lockfile in
467 'net serverid wipe' is not necessary anymore. It was meant primarily
468 for clustered environments, where the serverid.tdb file was not
469 properly cleaned up after single node crashes. Nowadays smbd and
470 winbind take care of cleaning up the msg.lock and msg.sock directories
473 NT4-style replication based net commands removed
474 ------------------------------------------------
476 The following commands and sub-commands have been removed from the
482 Also, replicating from a real NT4 domain with "net rpc vampire" and
483 "net rpc vampire keytab" has been removed.
485 The NT4-based commands were accidentally broken in 2013, and nobody
486 noticed the breakage. So instead of fixing them including tests (which
487 would have meant writing a server for the protocols, which we don't
488 have) we decided to remove them.
490 For the same reason, the "samsync", "samdeltas" and "database_redo"
491 commands have been removed from rpcclient.
493 "net rpc vampire keytab" from Active Directory domains continues to be
496 vfs_aio_linux module removed
497 ----------------------------
499 The current Linux kernel aio does not match what Samba would
500 do. Shipping code that uses it leads people to false
501 assumptions. Samba implements async I/O based on threads by default,
502 there is no special module required to see benefits of read and write
503 request being sent do the disk in parallel.
509 Parameter Name Description Default
510 -------------- ----------- -------
511 apply group policies New no
514 client schannel Default changed/ yes
516 gpo update command New
517 ldap ssl ads Deprecated
518 map untrusted to domain Removed
519 oplock contention limit Removed
520 prefork children New 1
521 mdns name New netbios
522 fruit:time machine New false
525 server schannel Default changed/ yes
528 winbind scan trusted domains New yes
529 winbind trusted domains only Removed
532 CHANGES SINCE 4.8.0rc4
533 ======================
535 o Jeremy Allison <jra@samba.org>
536 * BUG 11343: CVE-2018-1050: Codenomicon crashes in spoolss server code.
538 o Ralph Boehme <slow@samba.org>
539 * BUG 13272: CVE-2018-1057: Unprivileged user can change any user (and admin)
541 * BUG 13313: nsswitch: Fix wbinfo -m --verbose trust type "Local".
543 o Stefan Metzmacher <metze@samba.org>
544 * BUG 13272: CVE-2018-1057: Unprivileged user can change any user (and admin)
547 o Dan Robertson <drobertson@tripwire.com>
548 * BUG 13310: libsmb: Use smb2 tcon if conn_protocol >= SMB2_02.
550 o Andreas Schneider <asn@samba.org>
551 * BUG 13315: s3:smbd: Do not crash if we fail to init the session table.
554 CHANGES SINCE 4.8.0rc3
555 ======================
557 o Ralph Boehme <slow@samba.org>
558 * BUG 13287: Fix numerous trust related bugs in winbindd and s4 LSA RPC
560 * BUG 13296: vfs_fruit: Use off_t, not size_t for TM size calculations.
562 o Alexander Bokovoy <ab@samba.org>
563 * BUG 13304: mit-kdb: Support MIT Kerberos 1.16 KDB API changes.
565 o Günther Deschner <gd@samba.org>
566 * BUG 13277: build: Fix libceph-common detection.
568 o Poornima G <pgurusid@redhat.com>
569 * BUG 13297: vfs_glusterfs: Fix the wrong pointer being sent in
572 o Volker Lendecke <vl@samba.org>
573 * BUG 13305: vfs_fileid: Fix the 32-bit build.
575 o Stefan Metzmacher <metze@samba.org>
576 * BUG 13206: Unable to authenticate with an empty string domain ''.
577 * BUG 13276: configure aborts without libnettle/gnutls.
578 * BUG 13278: winbindd (on an AD DC) should only use netlogon/lsa against
580 * BUG 13287: Fix numerous trust related bugs in winbindd and s4 LSA RPC
582 * BUG 13290: A disconnecting winbind client can cause a problem in
583 the winbind parent child communication.
584 * BUG 13291: tevent: version 0.9.36.
585 * BUG 13292: winbind requests could get stuck in the queue of a busy child,
586 while later requests could get served fine by other children.
587 * BUG 13293: Minimize the lifetime of winbindd_cli_state->{pw,gr}ent_state.
588 * BUG 13294: Avoid using fstrcpy(domain->dcname,...) on a char *.
589 * BUG 13295: winbind parent should find the dc of a foreign domain via the
591 * BUG 13299: Disable support for CROSS_ORGANIZATION domains.
592 * BUG 13306: ldb: version 1.3.2.
594 o Sachin Prabhu <sprabhu@redhat.com>
595 * BUG 13303: vfs_glusterfs: Add fallocate support for vfs_glusterfs.
597 o Garming Sam <garming@catalyst.net.nz>
598 * BUG 13031: subnet: Avoid a segfault when renaming subnet objects.
599 * BUG 13269: RODC may skip objects during replication due to naming
603 CHANGES SINCE 4.8.0rc2
604 ======================
606 o Trever L. Adams <trever.adams@gmail.com>
607 * BUG 13246: Backport Samba VirusFilter.
609 o Ralph Boehme <slow@samba.org>
610 * BUG 13228: dbcheck: Add support for restoring missing forward links.
612 o Günther Deschner <gd@samba.org>
613 * BUG 13221: python: fix the build with python3.
615 o Stefan Metzmacher <metze@samba.org>
616 * BUG 13228: dbcheck: Add support for restoring missing forward links.
619 CHANGES SINCE 4.8.0rc1
620 ======================
622 o Günther Deschner <gd@samba.org>
623 * BUG 13227: packaging: Fix default systemd-dir path.
624 * BUG 13238: build: Deal with recent glibc sunrpc header removal.
626 o Stefan Metzmacher <metze@samba.org>
627 * BUG 13228: repl_meta_data: fix linked attribute corruption on databases
628 with unsorted links on expunge.
630 o Christof Schmitt <cs@samba.org>
631 * BUG 13217: s3/smbd: Remove file system sharemode before calling unlink.
633 o Andreas Schneider <asn@samba.org>
634 * BUG 13209: Small improvements in winbindd for the resource cleanup in error
636 * BUG 13238: Make Samba work with tirpc and libnsl2.
642 https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.8#Release_blocking_bugs
645 #######################################
646 Reporting bugs & Development Discussion
647 #######################################
649 Please discuss this release on the samba-technical mailing list or by
650 joining the #samba-technical IRC channel on irc.freenode.net.
652 If you do report problems then please try to send high quality
653 feedback. If you don't provide vital information to help us track down
654 the problem then you will probably be ignored. All bug reports should
655 be filed under the Samba 4.1 and newer product in the project's Bugzilla
656 database (https://bugzilla.samba.org/).
659 ======================================================================
660 == Our Code, Our Bugs, Our Responsibility.
662 ======================================================================