[Announce] Samba 4.12.4, 4.11.11 and 4.10.17 Security Releases Available

[Karolin Seeger]

Release Announcements
---------------------

These are security release in order to address the following defects:

o CVE-2020-10730: NULL pointer de-reference and use-after-free in Samba AD DC
		  LDAP Server with ASQ, VLV and paged_results.
o CVE-2020-10745: Parsing and packing of NBT and DNS packets can consume
		  excessive CPU
o CVE-2020-10760: LDAP Use-after-free in Samba AD DC Global Catalog with
		  paged_results and VLV.
o CVE-2020-14303: Empty UDP packet DoS in Samba AD DC nbtd.


=======
Details
=======

o  CVE-2020-10730:
   A client combining the 'ASQ' and 'VLV' LDAP controls can cause a NULL pointer
   de-reference and further combinations with the LDAP paged_results feature can
   give a use-after-free in Samba's AD DC LDAP server.

o  CVE-2020-10745: Parsing and packing of NBT and DNS packets can consume
   excessive CPU.

o  CVE-2020-10760:
   The use of the paged_results or VLV controls against the Global Catalog LDAP
   server on the AD DC will cause a use-after-free.

o  CVE-2020-14303:
   The AD DC NBT server in Samba 4.0 will enter a CPU spin and not process
   further requests once it receives an empty (zero-length) UDP packet to
   port 137.

For more details, please refer to the security advisories.


Changes since 4.12.3
--------------------

o  Douglas Bagnall <douglas.bagnall at catalyst.net.nz>
   * BUG 14378: CVE-2020-10745: Invalid DNS or NBT queries containing dots use
     several seconds of CPU each.

o  Andrew Bartlett <abartlet at samba.org>
   * BUG 14364: CVE-2020-10730: NULL de-reference in AD DC LDAP server when ASQ
     and VLV combined.
   * BUG 14402: CVE-2020-10760: Fix use-after-free in AD DC Global Catalog LDAP
     server with paged_result or VLV.
   * BUG 14417: CVE-2020-14303: Fix endless loop from empty UDP packet sent to
     AD DC nbt_server.

o  Gary Lockyer <gary at catalyst.net.nz>
   * BUG 14364: CVE-2020-10730: NULL de-reference in AD DC LDAP server when ASQ
     and VLV combined, ldb: Bump version to 2.1.4.  
   

#######################################
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
======================================================================



================
Download Details
================

The uncompressed tarballs and patch files have been signed
using GnuPG (ID 6F33915B6568B7EA).  The source code can be downloaded
from:

        https://download.samba.org/pub/samba/stable/

The release notes are available online at:

        https://www.samba.org/samba/history/samba-4.12.4.html
        https://www.samba.org/samba/history/samba-4.11.11.html
        https://www.samba.org/samba/history/samba-4.10.17.html

Our Code, Our Bugs, Our Responsibility.
(https://bugzilla.samba.org/)

                        --Enjoy
                        The Samba Team
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