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Jule Anger 808afc79cc WHATSNEW: Add release notes for Samba 4.14.11. 
Signed-off-by: Jule Anger <janger@samba.org>
2021-12-15 15:46:22 +01:00

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===============================
Release Notes for Samba 4.14.11
December 15, 2021
===============================
This is the latest stable release of the Samba 4.14 release series.
Important Notes
===============
There have been a few regressions in the security release 4.14.10:
o CVE-2020-25717: A user on the domain can become root on domain members.
https://www.samba.org/samba/security/CVE-2020-25717.html
PLEASE [RE-]READ!
The instructions have been updated and some workarounds
initially adviced for 4.14.10 are no longer required and
should be reverted in most cases.
o BUG-14902: User with multiple spaces (eg Fred<space><space>Nurk) become
un-deletable. While this release should fix this bug, it is
adviced to have a look at the bug report for more detailed
information, see https://bugzilla.samba.org/show_bug.cgi?id=14902.
Changes since 4.14.10
---------------------
o Jeremy Allison <jra@samba.org>
* BUG 14878: Recursive directory delete with veto files is broken.
* BUG 14879: A directory containing dangling symlinks cannot be deleted by
SMB2 alone when they are the only entry in the directory.
o Andrew Bartlett <abartlet@samba.org>
* BUG 14656: Spaces incorrectly collapsed in ldb attributes.
* BUG 14694: Ensure that the LDB request has not timed out during filter
processing as the LDAP server MaxQueryDuration is otherwise not honoured.
* BUG 14901: The CVE-2020-25717 username map [script] advice has undesired
side effects for the local nt token.
* BUG 14902: User with multiple spaces (eg Fred<space><space>Nurk) become un-
deletable.
o Ralph Boehme <slow@samba.org>
* BUG 14127: Avoid storing NTTIME_THAW (-2) as value on disk
* BUG 14922: Kerberos authentication on standalone server in MIT realm
broken.
* BUG 14923: Segmentation fault when joining the domain.
o Alexander Bokovoy <ab@samba.org>
* BUG 14903: Support for ROLE_IPA_DC is incomplete.
o Stefan Metzmacher <metze@samba.org>
* BUG 14788: Memory leak if ioctl(FSCTL_VALIDATE_NEGOTIATE_INFO) fails before
smbd_smb2_ioctl_send.
* BUG 14899: winbindd doesn't start when "allow trusted domains" is off.
* BUG 14901: The CVE-2020-25717 username map [script] advice has undesired
side effects for the local nt token.
o Joseph Sutton <josephsutton@catalyst.net.nz>
* BUG 14694: Ensure that the LDB request has not timed out during filter
processing as the LDAP server MaxQueryDuration is otherwise not honoured.
* BUG 14901: The CVE-2020-25717 username map [script] advice has undesired
side effects for the local nt token.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
Release notes for older releases follow:
----------------------------------------
===============================
Release Notes for Samba 4.14.10
November 9, 2021
===============================
This is a security release in order to address the following defects:
o CVE-2016-2124: SMB1 client connections can be downgraded to plaintext
authentication.
https://www.samba.org/samba/security/CVE-2016-2124.html
o CVE-2020-25717: A user on the domain can become root on domain members.
https://www.samba.org/samba/security/CVE-2020-25717.html
(PLEASE READ! There are important behaviour changes described)
o CVE-2020-25718: Samba AD DC did not correctly sandbox Kerberos tickets issued
by an RODC.
https://www.samba.org/samba/security/CVE-2020-25718.html
o CVE-2020-25719: Samba AD DC did not always rely on the SID and PAC in Kerberos
tickets.
https://www.samba.org/samba/security/CVE-2020-25719.html
o CVE-2020-25721: Kerberos acceptors need easy access to stable AD identifiers
(eg objectSid).
https://www.samba.org/samba/security/CVE-2020-25721.html
o CVE-2020-25722: Samba AD DC did not do suffienct access and conformance
checking of data stored.
https://www.samba.org/samba/security/CVE-2020-25722.html
o CVE-2021-3738: Use after free in Samba AD DC RPC server.
https://www.samba.org/samba/security/CVE-2021-3738.html
o CVE-2021-23192: Subsequent DCE/RPC fragment injection vulnerability.
https://www.samba.org/samba/security/CVE-2021-23192.html
Changes since 4.14.9
--------------------
o Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* CVE-2020-25722
o Andrew Bartlett <abartlet@samba.org>
* CVE-2020-25718
* CVE-2020-25719
* CVE-2020-25721
* CVE-2020-25722
o Ralph Boehme <slow@samba.org>
* CVE-2020-25717
o Alexander Bokovoy <ab@samba.org>
* CVE-2020-25717
o Samuel Cabrero <scabrero@samba.org>
* CVE-2020-25717
o Nadezhda Ivanova <nivanova@symas.com>
* CVE-2020-25722
o Stefan Metzmacher <metze@samba.org>
* CVE-2016-2124
* CVE-2020-25717
* CVE-2020-25719
* CVE-2020-25722
* CVE-2021-23192
* CVE-2021-3738
* ldb: version 2.3.2
o Andreas Schneider <asn@samba.org>
* CVE-2020-25719
o Joseph Sutton <josephsutton@catalyst.net.nz>
* CVE-2020-17049
* CVE-2020-25718
* CVE-2020-25719
* CVE-2020-25721
* CVE-2020-25722
* MS CVE-2020-17049
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.libera.chat or the
#samba-technical:matrix.org matrix channel.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.9
October 27, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.8
--------------------
o Jeremy Allison <jra@samba.org>
* BUG 14682: vfs_shadow_copy2: core dump in make_relative_path.
o Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* BUG 14868: rodc_rwdc test flaps.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Andrew Bartlett <abartlet@samba.org>
* BUG 14836: Python ldb.msg_diff() memory handling failure.
* BUG 14642: Provide a fix for MS CVE-2020-17049 in Samba [SECURITY] 'Bronze
bit' S4U2Proxy Constrained Delegation bypass in Samba with embedded
Heimdal.
* BUG 14845: "in" operator on ldb.Message is case sensitive.
* BUG 14848: Release LDB 2.3.1 for Samba 4.14.9.
* BUG 14870: Prepare to operate with MIT krb5 >= 1.20.
* BUG 14871: Fix Samba support for UF_NO_AUTH_DATA_REQUIRED.
* BUG 14874: Allow special chars like "@" in samAccountName when generating
the salt.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Ralph Boehme <slow@samba.org>
* BUG 14826: Correctly ignore comments in CTDB public addresses file.
o Isaac Boukris <iboukris@gmail.com>
* BUG 14642: Provide a fix for MS CVE-2020-17049 in Samba [SECURITY] 'Bronze
bit' S4U2Proxy Constrained Delegation bypass in Samba with embedded
Heimdal.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Viktor Dukhovni <viktor@twosigma.com>
* BUG 12998: Fix transit path validation.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Luke Howard <lukeh@padl.com>
* BUG 14642: Provide a fix for MS CVE-2020-17049 in Samba [SECURITY] 'Bronze
bit' S4U2Proxy Constrained Delegation bypass in Samba with embedded
Heimdal.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Stefan Metzmacher <metze@samba.org>
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Andreas Schneider <asn@samba.org>
* BUG 14870: Prepare to operate with MIT krb5 >= 1.20.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Martin Schwenke <martin@meltin.net>
* BUG 14826: Correctly ignore comments in CTDB public addresses file.
o Joseph Sutton <josephsutton@catalyst.net.nz>
* BUG 14642: Provide a fix for MS CVE-2020-17049 in Samba [SECURITY] 'Bronze
bit' S4U2Proxy Constrained Delegation bypass in Samba with embedded
Heimdal.
* BUG 14845: "in" operator on ldb.Message is case sensitive.
* BUG 14868: rodc_rwdc test flaps.
* BUG 14871: Fix Samba support for UF_NO_AUTH_DATA_REQUIRED.
* BUG 14874: Allow special chars like "@" in samAccountName when generating
the salt.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
o Nicolas Williams <nico@twosigma.com>
* BUG 14642: Provide a fix for MS CVE-2020-17049 in Samba [SECURITY] 'Bronze
bit' S4U2Proxy Constrained Delegation bypass in Samba with embedded
Heimdal.
* BUG 14881: Backport bronze bit fixes, tests, and selftest improvements.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.8
October 05, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.7
--------------------
o Jeremy Allison <jra@samba.org>
* BUG 14742: Python ldb.msg_diff() memory handling failure.
* BUG 14805: OpenDir() loses the correct errno return.
* BUG 14809: Shares with variable substitutions cause core dump upon
connection from MacOS Big Sur 11.5.2.
* BUG 14816: Fix pathref open of a filesystem fifo in the DISABLE_OPATH
build.
o Andrew Bartlett <abartlet@samba.org>
* BUG 14806: Address a signifcant performance regression in database access
in the AD DC since Samba 4.12.
* BUG 14807: Fix performance regression in lsa_LookupSids3/LookupNames4 since
Samba 4.9 by using an explicit database handle cache.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
* BUG 14818: Address flapping samba_tool_drs_showrepl test.
* BUG 14819: Address flapping dsdb_schema_attributes test.
* BUG 14841: Samba CI runs can now continue past the first error if
AUTOBUILD_FAIL_IMMEDIATELY=0 is set.
* BUG 14854: samldb_krbtgtnumber_available() looks for incorrect string.
o Ralph Boehme <slow@samba.org>
* BUG 14771: Some VFS operations on pathref (O_PATH) handles fail on GPFS.
* BUG 14783: smbd "deadtime" parameter doesn't work anymore.
* BUG 14787: net conf list crashes when run as normal user.
* BUG 14790: vfs_btrfs compression support broken.
* BUG 14804: winbindd can crash because idmap child state is not fully
initialized.
o Luke Howard <lukeh@padl.com>
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
o Volker Lendecke <vl@samba.org>
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
o Gary Lockyer <gary@catalyst.net.nz>
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
o Stefan Metzmacher <metze@samba.org>
* BUG 14771: Some VFS operations on pathref (O_PATH) handles fail on GPFS.
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
o Andreas Schneider <asn@samba.org>
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
o Martin Schwenke <martin@meltin.net>
* BUG 14784: Fix CTDB flag/status update race conditions.
o Joseph Sutton <josephsutton@catalyst.net.nz>
* BUG 14817: An unuthenticated user can crash the AD DC KDC by omitting the
server name in a TGS-REQ.
* BUG 14836: Python ldb.msg_diff() memory handling failure.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.7
August 24, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.6
--------------------
o Jeremy Allison <jra@samba.org>
* BUG 14769: smbd panic on force-close share during offload write.
o Ralph Boehme <slow@samba.org>
* BUG 12033: smbd should support copy_file_range() for FSCTL_SRV_COPYCHUNK.
* BUG 14731: Fix returned attributes on fake quota file handle and avoid
hitting the VFS.
* BUG 14756: vfs_shadow_copy2 fix inodes not correctly updating inode
numbers.
o David Gajewski <dgajews@math.utoledo.edu>
* BUG 14774: Fix build on Solaris.
o Björn Jacke <bj@sernet.de>
* BUG 14654: Make dos attributes available for unreadable files.
o Stefan Metzmacher <metze@samba.org>
* BUG 14607: Work around special SMB2 READ response behavior of NetApp Ontap
7.3.7.
* BUG 14793: Start the SMB encryption as soon as possible.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.6
July 13, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.5
--------------------
o Jeremy Allison <jra@samba.org>
* BUG 14722: s3: lib: Fix talloc heirarcy error in parent_smb_fname().
* BUG 14732: smbd: Fix pathref unlinking in create_file_unixpath().
* BUG 14734: s3: VFS: default: Add proc_fd's fallback for vfswrap_fchown().
* BUG 14736: s3: smbd: Remove erroneous TALLOC_FREE(smb_fname_parent) in
change_file_owner_to_parent() error path.
o Ralph Boehme <slow@samba.org>
* BUG 14730: NT_STATUS_FILE_IS_A_DIRECTORY error messages when using
glusterfs VFS module.
* BUG 14734: s3/modules: fchmod: Fallback to path based chmod if pathref.
* BUG 14740: Spotlight RPC service doesn't work with vfs_glusterfs.
o Stefan Metzmacher <metze@samba.org>
* BUG 14750: gensec_krb5: Restore ipv6 support for kpasswd.
* BUG 14752: smbXsrv_{open,session,tcon}: protect
smbXsrv_{open,session,tcon}_global_traverse_fn against invalid records.
o Joseph Sutton <josephsutton@catalyst.net.nz>
* BUG 14027: samba-tool domain backup offline doesn't work against bind DLZ
backend.
* BUG 14669: netcmd: Use next_free_rid() function to calculate a SID for
restoring a backup.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.5
June 01, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.4
--------------------
o Jeremy Allison <jra@samba.org>
* BUG 14696: s3: smbd: SMB1 SMBsplwr doesn't send a reply packet on success.
* BUG 14708: s3: smbd: Ensure POSIX default ACL is mapped into returned
Windows ACL for directory handles.
* BUG 14721: s3: smbd: Fix uninitialized memory read in
process_symlink_open() when used with vfs_shadow_copy2().
o Andrew Bartlett <abartlet@samba.org>
* BUG 14689: docs: Expand the "log level" docs on audit logging.
o Ralph Boehme <slow@samba.org>
* BUG 14714: smbd: Correctly initialize close timestamp fields.
o Günther Deschner <gd@samba.org>
* BUG 14699: Fix gcc11 compiler issues.
o Pavel Filipenský <pfilipen@redhat.com>
* BUG 14718: docs-xml: Update smbcacls manpage.
* BUG 14719: docs: Update list of available commands in rpcclient.
o Volker Lendecke <vl@samba.org>
* BUG 14475: ctdb: Fix a crash in run_proc_signal_handler().
o Andreas Schneider <asn@samba.org>
* BUG 14695: s3:winbind: For 'security = ADS' require realm/workgroup to be
set.
* BUG 14699: lib:replace: Do not build strndup test with gcc 11 or newer.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.4
April 29, 2021
==============================
This is a security release in order to address the following defect:
o CVE-2021-20254: Negative idmap cache entries can cause incorrect group entries
in the Samba file server process token.
=======
Details
=======
o CVE-2021-20254:
The Samba smbd file server must map Windows group identities (SIDs) into unix
group ids (gids). The code that performs this had a flaw that could allow it
to read data beyond the end of the array in the case where a negative cache
entry had been added to the mapping cache. This could cause the calling code
to return those values into the process token that stores the group
membership for a user.
Most commonly this flaw caused the calling code to crash, but an alert user
(Peter Eriksson, IT Department, Linköping University) found this flaw by
noticing an unprivileged user was able to delete a file within a network
share that they should have been disallowed access to.
Analysis of the code paths has not allowed us to discover a way for a
remote user to be able to trigger this flaw reproducibly or on demand,
but this CVE has been issued out of an abundance of caution.
Changes since 4.14.3
--------------------
o Volker Lendecke <vl@samba.org>
* BUG 14571: CVE-2021-20254: Fix buffer overrun in sids_to_unixids().
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.3
April 20, 2021
==============================
This is the latest stable release of the Samba 4.14 release series.
Changes since 4.14.2
--------------------
o Trever L. Adams <trever.adams@gmail.com>
* BUG 14671: s3:modules:vfs_virusfilter: Recent New_VFS changes break
vfs_virusfilter_openat.
o Andrew Bartlett <abartlet@samba.org>
* BUG 14586: build: Notice if flex is missing at configure time.
o Ralph Boehme <slow@samba.org>
* BUG 14672: Fix smbd panic when two clients open same file.
* BUG 14675: Fix memory leak in the RPC server.
* BUG 14679: s3: smbd: fix deferred renames.
o Samuel Cabrero <scabrero@samba.org>
* BUG 14675: s3-iremotewinspool: Set the per-request memory context.
o Volker Lendecke <vl@samba.org>
* BUG 14675: Fix memory leak in the RPC server.
o Stefan Metzmacher <metze@samba.org>
* BUG 11899: third_party: Update socket_wrapper to version 1.3.2.
* BUG 14640: third_party: Update socket_wrapper to version 1.3.3.
o David Mulder <dmulder@suse.com>
* BUG 14665: samba-gpupdate: Test that sysvol paths download in
case-insensitive way.
o Sachin Prabhu <sprabhu@redhat.com>
* BUG 14662: smbd: Ensure errno is preserved across fsp destructor.
o Christof Schmitt <cs@samba.org>
* BUG 14663: idmap_rfc2307 and idmap_nss return wrong mapping for uid/gid
conflict.
o Martin Schwenke <martin@meltin.net>
* BUG 14288: build: Only add -Wl,--as-needed when supported.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.2
March 24, 2021
==============================
This is a follow-up release to depend on the correct ldb version. This is only
needed when building against a system ldb library.
This is a security release in order to address the following defects:
o CVE-2020-27840: Heap corruption via crafted DN strings.
o CVE-2021-20277: Out of bounds read in AD DC LDAP server.
=======
Details
=======
o CVE-2020-27840:
An anonymous attacker can crash the Samba AD DC LDAP server by sending easily
crafted DNs as part of a bind request. More serious heap corruption is likely
also possible.
o CVE-2021-20277:
User-controlled LDAP filter strings against the AD DC LDAP server may crash
the LDAP server.
For more details, please refer to the security advisories.
Changes since 4.14.1
--------------------
o Release with dependency on ldb version 2.3.0.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.1
March 24, 2021
==============================
This is a security release in order to address the following defects:
o CVE-2020-27840: Heap corruption via crafted DN strings.
o CVE-2021-20277: Out of bounds read in AD DC LDAP server.
=======
Details
=======
o CVE-2020-27840:
An anonymous attacker can crash the Samba AD DC LDAP server by sending easily
crafted DNs as part of a bind request. More serious heap corruption is likely
also possible.
o CVE-2021-20277:
User-controlled LDAP filter strings against the AD DC LDAP server may crash
the LDAP server.
For more details, please refer to the security advisories.
Changes since 4.14.0
--------------------
o Andrew Bartlett <abartlet@samba.org>
* BUG 14655: CVE-2021-20277: Fix out of bounds read in ldb_handler_fold.
o Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
* BUG 14595: CVE-2020-27840: Fix unauthenticated remote heap corruption via
bad DNs.
* BUG 14655: CVE-2021-20277: Fix out of bounds read in ldb_handler_fold.
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
----------------------------------------------------------------------
==============================
Release Notes for Samba 4.14.0
March 09, 2021
==============================
This is the first stable release of the Samba 4.14 release series.
Please read the release notes carefully before upgrading.
New GPG key
===========
The GPG release key for Samba releases changed from:
pub dsa1024/6F33915B6568B7EA 2007-02-04 [SC] [expires: 2021-02-05]
Key fingerprint = 52FB C0B8 6D95 4B08 4332 4CDC 6F33 915B 6568 B7EA
uid [ full ] Samba Distribution Verification Key <samba-bugs@samba.org>
sub elg2048/9C6ED163DA6DFB44 2007-02-04 [E] [expires: 2021-02-05]
to the following new key:
pub rsa4096/AA99442FB680B620 2020-12-21 [SC] [expires: 2022-12-21]
Key fingerprint = 81F5 E283 2BD2 545A 1897 B713 AA99 442F B680 B620
uid [ultimate] Samba Distribution Verification Key <samba-bugs@samba.org>
sub rsa4096/97EF9386FBFD4002 2020-12-21 [E] [expires: 2022-12-21]
Starting from Jan 21th 2021, all Samba releases will be signed with the new key.
See also GPG_AA99442FB680B620_replaces_6F33915B6568B7EA.txt
NEW FEATURES/CHANGES
====================
Here is a copy of a clarification note added to the Samba code
in the file: VFS-License-clarification.txt.
--------------------------------------------------------------
A clarification of our GNU GPL License enforcement boundary within the Samba
Virtual File System (VFS) layer.
Samba is licensed under the GNU GPL. All code committed to the Samba
project or that creates a "modified version" or software "based on" Samba must
be either licensed under the GNU GPL or a compatible license.
Samba has several plug-in interfaces where external code may be called
from Samba GNU GPL licensed code. The most important of these is the
Samba VFS layer.
Samba VFS modules are intimately connected by header files and API
definitions to the part of the Samba code that provides file services,
and as such, code that implements a plug-in Samba VFS module must be
licensed under the GNU GPL or a compatible license.
However, Samba VFS modules may themselves call third-party external
libraries that are not part of the Samba project and are externally
developed and maintained.
As long as these third-party external libraries do not use any of the
Samba internal structure, APIs or interface definitions created by the
Samba project (to the extent that they would be considered subject to the GNU
GPL), then the Samba Team will not consider such third-party external
libraries called from Samba VFS modules as "based on" and/or creating a
"modified version" of the Samba code for the purposes of GNU GPL.
Accordingly, we do not require such libraries be licensed under the GNU GPL
or a GNU GPL compatible license.
VFS
---
The effort to modernize Samba's VFS interface has reached a major milestone with
the next release Samba 4.14.
For details please refer to the documentation at source3/modules/The_New_VFS.txt or
visit the <https://wiki.samba.org/index.php/The_New_VFS>.
Printing
--------
Publishing printers in AD is more reliable and more printer features are
added to the published information in AD. Samba now also supports Windows
drivers for the ARM64 architecture.
Client Group Policy
-------------------
This release extends Samba to support Group Policy functionality for Winbind
clients. Active Directory Administrators can set policies that apply Sudoers
configuration, and cron jobs to run hourly, daily, weekly or monthly.
To enable the application of Group Policies on a client, set the global
smb.conf option 'apply group policies' to 'yes'. Policies are applied on an
interval of every 90 minutes, plus a random offset between 0 and 30 minutes.
Policies applied by Samba are 'non-tattooing', meaning that changes can be
reverted by executing the `samba-gpupdate --unapply` command. Policies can be
re-applied using the `samba-gpupdate --force` command.
To view what policies have been or will be applied to a system, use the
`samba-gpupdate --rsop` command.
Administration of Samba policy requires that a Samba ADMX template be uploaded
to the SYSVOL share. The samba-tool command `samba-tool gpo admxload` is
provided as a convenient method for adding this policy. Once uploaded, policies
can be modified in the Group Policy Management Editor under Computer
Configuration/Policies/Administrative Templates. Alternatively, Samba policy
may be managed using the `samba-tool gpo manage` command. This tool does not
require the admx templates to be installed.
Python 3.6 or later required
----------------------------
Samba's minimum runtime requirement for python was raised to Python
3.6 with samba 4.13. Samba 4.14 raises this minimum version to Python
3.6 also to build Samba. It is no longer possible to build Samba
(even just the file server) with Python versions 2.6 and 2.7.
As Python 2.7 has been End Of Life upstream since April 2020, Samba
is dropping ALL Python 2.x support in this release.
Miscellaneous samba-tool changes
--------------------------------
The 'samba-tool' subcommands to manage AD objects (e.g. users, computers and
groups) now consistently use the "add" command when adding a new object to
the AD. The previous deprecation warnings when using the 'add' commands
have been removed. For compatibility reasons, both the 'add' and 'create'
commands can be used now.
Users, groups and contacts can now be renamed with the respective rename
commands.
Locked users can be unlocked with the new 'samba-tool user unlock' command.
The 'samba-tool user list' and 'samba-tool group listmembers' commands
provide additional options to hide expired and disabled user accounts
(--hide-expired and --hide-disabled).
CTDB CHANGES
============
* The NAT gateway and LVS features now uses the term "leader" to refer
to the main node in a group through which traffic is routed and
"follower" for other members of a group. The command for
determining the leader has changed to "ctdb natgw leader" (from
"ctdb natgw master"). The configuration keyword for indicating that
a node can not be the leader of a group has changed to
"follower-only" (from "slave-only"). Identical changes were made
for LVS.
* Remove "ctdb isnotrecmaster" command. It isn't used by CTDB's
scripts and can be checked by users with "ctdb pnn" and "ctdb
recmaster".
smb.conf changes
================
Parameter Name Description Default
-------------- ----------- -------
smb encrypt Removed
async dns timeout New 10
client smb encrypt New default
honor change notify privilege New No
smbd force process locks New No
server smb encrypt New default
CHANGES SINCE 4.14.0rc4
=======================
o Trever L. Adams <trever.adams@gmail.com>
* BUG 14634: s3:modules:vfs_virusfilter: Recent talloc changes cause infinite
start-up failure.
o Peter Eriksson <pen@lysator.liu.se>
* BUG 14648: s3: VFS: nfs4_acls. Add missing TALLOC_FREE(frame) in error
path.
o Volker Lendecke <vl@samba.org>
* BUG 14636: g_lock: Fix uninitalized variable reads.
CHANGES SINCE 4.14.0rc3
=======================
o Jeremy Allison <jra@samba.org>
* BUG 14604: smbd: In conn_force_tdis_done() when forcing a connection closed
force a full reload of services.
o Andrew Bartlett <abartlet@samba.org>
* BUG 14593: dbcheck: Check Deleted Objects and reduce noise in reports about
expired tombstones.
o Ralph Boehme <slow@samba.org>
* BUG 14619: vfs: Restore platform specific POSIX sys_acl_set_file()
functions.
* BUG 14620: Fix the build on AIX.
* BUG 14629: smbd: Don't overwrite _mode if neither a msdfs symlink nor
get_dosmode is requested.
* BUG 14635: Fix printer driver upload.
CHANGES SINCE 4.14.0rc2
=======================
o Björn Jacke <bj@sernet.de>
* BUG 14624: classicupgrade: Treat old never expires value right.
o Stefan Metzmacher <metze@samba.org>
* BUG 13898: s3:pysmbd: fix fd leak in py_smbd_create_file().
o Andreas Schneider <asn@samba.org>
* BUG 14625: Fix smbd share mode double free crash.
o Paul Wise <pabs3@bonedaddy.net>
* BUG 12505: HEIMDAL: krb5_storage_free(NULL) should work.
CHANGES SINCE 4.14.0rc1
=======================
o Jeremy Allison <jra@samba.org>
* BUG 13992: Fix SAMBA RPC share error.
o Ralph Boehme <slow@samba.org>
* BUG 14602: "winbind:ignore domains" doesn't prevent user login from trusted
domain.
* BUG 14617: smbd tries to delete files with wrong permissions (uses guest
instead of user from force user =).
o Stefan Metzmacher <metze@samba.org>
* BUG 14539: s3:idmap_hash: Reliably return ID_TYPE_BOTH.
o Andreas Schneider <asn@samba.org>
* BUG 14627: s3:smbd: Fix invalid memory access in
posix_sys_acl_blob_get_fd().
KNOWN ISSUES
============
https://wiki.samba.org/index.php/Release_Planning_for_Samba_4.14#Release_blocking_bugs
#######################################
Reporting bugs & Development Discussion
#######################################
Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical IRC channel on irc.freenode.net.
If you do report problems then please try to send high quality
feedback. If you don't provide vital information to help us track down
the problem then you will probably be ignored. All bug reports should
be filed under the Samba 4.1 and newer product in the project's Bugzilla
database (https://bugzilla.samba.org/).
======================================================================
== Our Code, Our Bugs, Our Responsibility.
== The Samba Team
======================================================================
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