-Release Announcements
-=====================
+ ==============================
+ Release Notes for Samba 4.13.7
+ March 24, 2021
+ ==============================
-This is the sixth release condidate of Samba 4.13. This is *not*
-intended for production environments and is designed for testing
-purposes only. Please report any defects via the Samba bug reporting
-system at https://bugzilla.samba.org/.
-Samba 4.13 will be the next version of the Samba suite.
+This is a follow-up release to depend on the correct ldb version. This is only
+needed when building against a system ldb library.
-SECURITY
-========
+This is a security release in order to address the following defects:
-o CVE-2020-1472: Unauthenticated domain takeover via netlogon ("ZeroLogon").
+o CVE-2020-27840: Heap corruption via crafted DN strings.
+o CVE-2021-20277: Out of bounds read in AD DC LDAP server.
-The following applies to Samba used as domain controller only (most
-seriously the Active Directory DC, but also the classic/NT4-style DC).
-Installations running Samba as a file server only are not directly
-affected by this flaw, though they may need configuration changes to
-continue to talk to domain controllers (see "file servers and domain
-members" below).
+=======
+Details
+=======
-The netlogon protocol contains a flaw that allows an authentication
-bypass. This was reported and patched by Microsoft as CVE-2020-1472.
-Since the bug is a protocol level flaw, and Samba implements the
-protocol, Samba is also vulnerable.
+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.
-However, since version 4.8 (released in March 2018), the default
-behaviour of Samba has been to insist on a secure netlogon channel,
-which is a sufficient fix against the known exploits. This default is
-equivalent to having 'server schannel = yes' in the smb.conf.
+o CVE-2021-20277:
+ User-controlled LDAP filter strings against the AD DC LDAP server may crash
+ the LDAP server.
-Therefore versions 4.8 and above are not vulnerable unless they have
-the smb.conf lines 'server schannel = no' or 'server schannel = auto'.
+For more details, please refer to the security advisories.
-Samba versions 4.7 and below are vulnerable unless they have 'server
-schannel = yes' in the smb.conf.
-Note each domain controller needs the correct settings in its smb.conf.
+Changes since 4.13.6
+--------------------
-Vendors supporting Samba 4.7 and below are advised to patch their
-installations and packages to add this line to the [global] section if
-their smb.conf file.
+o Release with dependency on ldb version 2.2.1.
-The 'server schannel = yes' smb.conf line is equivalent to Microsoft's
-'FullSecureChannelProtection=1' registry key, the introduction of
-which we understand forms the core of Microsoft's fix.
-Some domains employ third-party software that will not work with a
-'server schannel = yes'. For these cases patches are available that
-allow specific machines to use insecure netlogon. For example, the
-following smb.conf:
+#######################################
+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 4.13.6
+ 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 4.13.5
+--------------------
+
+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 4.13.5
+ March 09, 2021
+ ==============================
+
+
+This is the latest stable release of the Samba 4.13 release series.
+
+
+Changes since 4.13.4
+--------------------
+
+o Trever L. Adams <trever.adams@gmail.com>
+ * BUG 14634: s3:modules:vfs_virusfilter: Recent talloc changes cause infinite
+ start-up failure.
+
+o Jeremy Allison <jra@samba.org>
+ * BUG 13992: s3: libsmb: Add missing cli_tdis() in error path if encryption
+ setup failed on temp proxy connection.
+ * 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 14503: s3: Fix fcntl waf configure check.
+ * BUG 14602: s3/auth: Implement "winbind:ignore domains".
+ * BUG 14617: smbd: Use fsp->conn->session_info for the initial
+ delete-on-close token.
- server schannel = yes
- server require schannel:triceratops$ = no
- server require schannel:greywacke$ = no
+o Peter Eriksson <pen@lysator.liu.se>
+ * BUG 14648: s3: VFS: nfs4_acls. Add missing TALLOC_FREE(frame) in error
+ path.
-will allow only "triceratops$" and "greywacke$" to avoid schannel.
+o Björn Jacke <bj@sernet.de>
+ * BUG 14624: classicupgrade: Treat old never expires value right.
+
+o Volker Lendecke <vl@samba.org>
+ * BUG 14636: g_lock: Fix uninitalized variable reads.
+
+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: lib:util: Avoid free'ing our own pointer.
+
+o Paul Wise <pabs3@bonedaddy.net>
+ * BUG 12505: HEIMDAL: krb5_storage_free(NULL) should work.
+
+
+#######################################
+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 4.13.4
+ January 26, 2021
+ ==============================
+
+
+This is the latest stable release of the Samba 4.13 release series.
+
+
+Changes since 4.13.3
+--------------------
+
+o Jeremy Allison <jra@samba.org>
+ * BUG 14607: Work around special SMB2 IOCTL response behavior of NetApp Ontap
+ 7.3.7.
+ * BUG 14612: Temporary DFS share setup doesn't set case parameters in the
+ same way as a regular share definition does.
+
+o Dimitry Andric <dimitry@andric.com>
+ * BUG 14605: lib: Avoid declaring zero-length VLAs in various messaging
+ functions.
+
+o Andrew Bartlett <abartlet@samba.org>
+ * BUG 14579: Do not create an empty DB when accessing a sam.ldb.
+
+o Ralph Boehme <slow@samba.org>
+ * BUG 14596: vfs_fruit may close wrong backend fd.
+ * BUG 14612: Temporary DFS share setup doesn't set case parameters in the
+ same way as a regular share definition does.
+
+o Arne Kreddig <arne@kreddig.net>
+ * BUG 14606: vfs_virusfilter: Allocate separate memory for config char*.
+
+o Stefan Metzmacher <metze@samba.org>
+ * BUG 14596: vfs_fruit may close wrong backend fd.
+ * BUG 14607: Work around special SMB2 IOCTL response behavior of NetApp Ontap
+ 7.3.7.
+
+o Andreas Schneider <asn@samba.org>
+ * BUG 14601: The cache directory for the user gencache should be created
+ recursively.
+
+o Martin Schwenke <martin@meltin.net>
+ * BUG 14594: Be more flexible with repository names in CentOS 8 test
+ environments.
+
+
+#######################################
+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
+======================================================================
-More details can be found here:
-https://www.samba.org/samba/security/CVE-2020-1472.html
+----------------------------------------------------------------------
-UPGRADING
+
+ ==============================
+ Release Notes for Samba 4.13.3
+ December 15, 2020
+ ==============================
+
+
+This is the latest stable release of the Samba 4.13 release series.
+
+
+Changes since 4.13.2
+--------------------
+
+o Jeremy Allison <jra@samba.org>
+ * BUG 14210: libcli: smb2: Never print length if smb2_signing_key_valid()
+ fails for crypto blob.
+ * BUG 14486: s3: modules: gluster. Fix the error I made in preventing talloc
+ leaks from a function.
+ * BUG 14515: s3: smbd: Don't overwrite contents of fsp->aio_requests[0] with
+ NULL via TALLOC_FREE().
+ * BUG 14568: s3: spoolss: Make parameters in call to user_ok_token() match
+ all other uses.
+ * BUG 14590: s3: smbd: Quiet log messages from usershares for an unknown
+ share.
+
+o Ralph Boehme <slow@samba.org>
+ * BUG 14248: samba process does not honor max log size.
+ * BUG 14587: vfs_zfsacl: Add missing inherited flag on hidden "magic"
+ everyone@ ACE.
+
+o Isaac Boukris <iboukris@gmail.com>
+ * BUG 13124: s3-libads: Pass timeout to open_socket_out in ms.
+
+o Günther Deschner <gd@samba.org>
+ * BUG 14486: s3-vfs_glusterfs: Always disable write-behind translator.
+
+o Volker Lendecke <vl@samba.org>
+ * BUG 14517: smbclient: Fix recursive mget.
+ * BUG 14581: clitar: Use do_list()'s recursion in clitar.c.
+
+o Anoop C S <anoopcs@samba.org>
+ * BUG 14486: manpages/vfs_glusterfs: Mention silent skipping of write-behind
+ translator.
+ * BUG 14573: vfs_shadow_copy2: Preserve all open flags assuming ROFS.
+
+o Jones Syue <jonessyue@qnap.com>
+ * BUG 14514: interface: Fix if_index is not parsed correctly.
+
+
+#######################################
+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 4.13.2
+ November 03, 2020
+ ==============================
+
+
+This is the latest stable release of the Samba 4.13 release series.
+
+Major enhancements include:
+ o BUG 14537: ctdb-common: Avoid aliasing errors during code optimization.
+ o BUG 14486: vfs_glusterfs: Avoid data corruption with the write-behind
+ translator.
+
+
+=======
+Details
+=======
+
+The GlusterFS write-behind performance translator, when used with Samba, could
+be a source of data corruption. The translator, while processing a write call,
+immediately returns success but continues writing the data to the server in the
+background. This can cause data corruption when two clients relying on Samba to
+provide data consistency are operating on the same file.
+
+The write-behind translator is enabled by default on GlusterFS.
+The vfs_glusterfs plugin will check for the presence of the translator and
+refuse to connect if detected. Please disable the write-behind translator for
+the GlusterFS volume to allow the plugin to connect to the volume.
+
+
+Changes since 4.13.1
+--------------------
+
+o Jeremy Allison <jra@samba.org>
+ * BUG 14486: s3: modules: vfs_glusterfs: Fix leak of char
+ **lines onto mem_ctx on return.
+
+o Ralph Boehme <slow@samba.org>
+ * BUG 14471: RN: vfs_zfsacl: Only grant DELETE_CHILD if ACL tag is special.
+
+o Alexander Bokovoy <ab@samba.org>
+ * BUG 14538: smb.conf.5: Add clarification how configuration changes
+ reflected by Samba.
+ * BUG 14552: daemons: Report status to systemd even when running in
+ foreground.
+ * BUG 14553: DNS Resolver: Support both dnspython before and after 2.0.0.
+
+o Günther Deschner <gd@samba.org>
+ * BUG 14486: s3-vfs_glusterfs: Refuse connection when write-behind xlator is
+ present.
+
+o Amitay Isaacs <amitay@gmail.com>
+ * BUG 14487: provision: Add support for BIND 9.16.x.
+ * BUG 14537: ctdb-common: Avoid aliasing errors during code optimization.
+ * BUG 14541: libndr: Avoid assigning duplicate versions to symbols.
+
+o Björn Jacke <bjacke@samba.org>
+ * BUG 14522: docs: Fix default value of spoolss:architecture.
+
+o Laurent Menase <laurent.menase@hpe.com>
+ * BUG 14388: winbind: Fix a memleak.
+
+o Stefan Metzmacher <metze@samba.org>
+ * BUG 14531: s4:dsdb:acl_read: Implement "List Object" mode feature.
+
+o Sachin Prabhu <sprabhu@redhat.com>
+ * BUG 14486: docs-xml/manpages: Add warning about write-behind translator for
+ vfs_glusterfs.
+
+o Khem Raj <raj.khem@gmail.com>
+ * nsswitch/nsstest.c: Avoid nss function conflicts with glibc nss.h.
+
+o Anoop C S <anoopcs@samba.org>
+ * BUG 14530: vfs_shadow_copy2: Avoid closing snapsdir twice.
+
+o Andreas Schneider <asn@samba.org>
+ * BUG 14547: third_party: Update resolv_wrapper to version 1.1.7.
+ * BUG 14550: examples:auth: Do not install example plugin.
+
+o Martin Schwenke <martin@meltin.net>
+ * BUG 14513: ctdb-recoverd: Drop unnecessary and broken code.
+
+o Andrew Walker <awalker@ixsystems.com>
+ * BUG 14471: RN: vfs_zfsacl: Only grant DELETE_CHILD if ACL tag is special.
+
+
+#######################################
+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 4.13.1
+ October 29, 2020
+ ==============================
+
+
+This is a security release in order to address the following defects:
+
+o CVE-2020-14318: Missing handle permissions check in SMB1/2/3 ChangeNotify.
+o CVE-2020-14323: Unprivileged user can crash winbind.
+o CVE-2020-14383: An authenticated user can crash the DCE/RPC DNS with easily
+ crafted records.
+
+
+=======
+Details
+=======
+
+o CVE-2020-14318:
+ The SMB1/2/3 protocols have a concept of "ChangeNotify", where a client can
+ request file name notification on a directory handle when a condition such as
+ "new file creation" or "file size change" or "file timestamp update" occurs.
+
+ A missing permissions check on a directory handle requesting ChangeNotify
+ meant that a client with a directory handle open only for
+ FILE_READ_ATTRIBUTES (minimal access rights) could be used to obtain change
+ notify replies from the server. These replies contain information that should
+ not be available to directory handles open for FILE_READ_ATTRIBUTE only.
+
+o CVE-2020-14323:
+ winbind in version 3.6 and later implements a request to translate multiple
+ Windows SIDs into names in one request. This was done for performance
+ reasons: The Microsoft RPC call domain controllers offer to do this
+ translation, so it was an obvious extension to also offer this batch
+ operation on the winbind unix domain stream socket that is available to local
+ processes on the Samba server.
+
+ Due to improper input validation a hand-crafted packet can make winbind
+ perform a NULL pointer dereference and thus crash.
+
+o CVE-2020-14383:
+ Some DNS records (such as MX and NS records) usually contain data in the
+ additional section. Samba's dnsserver RPC pipe (which is an administrative
+ interface not used in the DNS server itself) made an error in handling the
+ case where there are no records present: instead of noticing the lack of
+ records, it dereferenced uninitialised memory, causing the RPC server to
+ crash. This RPC server, which also serves protocols other than dnsserver,
+ will be restarted after a short delay, but it is easy for an authenticated
+ non-admin attacker to crash it again as soon as it returns. The Samba DNS
+ server itself will continue to operate, but many RPC services will not.
+
+For more details, please refer to the security advisories.
+
+
+Changes since 4.13.0
+--------------------
+
+o Jeremy Allison <jra@samba.org>
+ * BUG 14434: CVE-2020-14318: s3: smbd: Ensure change notifies can't get set
+ unless the directory handle is open for SEC_DIR_LIST.
+
+o Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
+ * BUG 12795: CVE-2020-14383: Remote crash after adding NS or MX records using
+ 'samba-tool'.
+ * BUG 14472: CVE-2020-14383: Remote crash after adding MX records.
+
+o Volker Lendecke <vl@samba.org>
+ * BUG 14436: CVE-2020-14323: winbind: Fix invalid lookupsids DoS.
+
+
+#######################################
+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 4.13.0
+ September 22, 2020
+ ==============================
+
+
+This is the first stable release of the Samba 4.13 release series.
+Please read the release notes carefully before upgrading.
+
+
+ZeroLogon
=========
+Please avoid to set "server schannel = no" and "server schannel= auto" on all
+Samba domain controllers due to the wellknown ZeroLogon issue.
+
+For details please see
+https://www.samba.org/samba/security/CVE-2020-1472.html.
+
NEW FEATURES/CHANGES
====================
A number of smb.conf parameters for less-secure authentication methods
which are only possible over SMBv1 are deprecated in this release.
+
REMOVED FEATURES
================
The deprecated "ldap ssl ads" smb.conf option has been removed.
-The deprecated "server schannel" smb.conf option will very likely
-removed in the final 4.13.0 release.
-
smb.conf changes
================
client NTLMv2 auth Deprecated yes
client lanman auth Deprecated no
client use spnego Deprecated yes
- server schannel To be removed in 4.13.0
server require schannel:COMPUTER Added
git.samba.org / samba.git / blobdiff