Software 42837 Published by

The Samba Team has released Samba 4.15.2, 4.14.10, 4.13.14 security releases.



Announce: Samba 4.15.2, 4.14.10, 4.13.14 Security Releases are available for Download

Gnome_shell_screenshot_rd3930

These are security releases 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

There's sadly a regression that "allow trusted domains = no" prevents winbindd
from starting, we'll try to provide a follow up fix as soon as possible.

Changes:
--------------------

o Douglas Bagnall
* CVE-2020-25722

o Andrew Bartlett
* CVE-2020-25718
* CVE-2020-25719
* CVE-2020-25721
* CVE-2020-25722

o Ralph Boehme
* CVE-2020-25717

o Alexander Bokovoy
* CVE-2020-25717

o Samuel Cabrero
* CVE-2020-25717

o Nadezhda Ivanova
* CVE-2020-25722

o Stefan Metzmacher
* CVE-2016-2124
* CVE-2020-25717
* CVE-2020-25719
* CVE-2020-25722
* CVE-2021-23192
* CVE-2021-3738
* ldb release 2.3.2 (for Samba 4.14.10)
* ldb release 2.2.3 (for Samba 4.13.14)

o Andreas Schneider
* CVE-2020-25719

o Joseph Sutton
* CVE-2020-17049
* CVE-2020-25718
* CVE-2020-25719
* CVE-2020-25721
* CVE-2020-25722
* MS CVE-2020-17049

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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
======================================================================


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

The uncompressed tarballs and patch files have been signed using GnuPG (ID AA99442FB680B620). 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-4.15.2.html
https://www.samba.org/samba/history/samba-4.14.10.html
https://www.samba.org/samba/history/samba-4.13.14.html

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

--Enjoy
The Samba Team