The Samba 4.19.1, 4.18.8, and 4.17.12 security releases are now available for download.

Samba 4.19.1, 4.18.8 and 4.17.12 Security Releases are available for Download

This is a security release in order to address the following defects:

o CVE-2023-3961:  Unsanitized pipe names allow SMB clients to connect as
root to
                  existing unix domain sockets on the file system.
https://www.samba.org/samba/security/CVE-2023-3961.html

o CVE-2023-4091:  SMB client can truncate files to 0 bytes by opening
files with
                  OVERWRITE disposition when using the acl_xattr Samba VFS
                  module with the smb.conf setting
                  "acl_xattr:ignore system acls = yes"
https://www.samba.org/samba/security/CVE-2023-4091.html

o CVE-2023-4154:  An RODC and a user with the GET_CHANGES right can view all
                  attributes, including secrets and passwords.
Additionally,
                  the access check fails open on error conditions.
https://www.samba.org/samba/security/CVE-2023-4154.html

o CVE-2023-42669: Calls to the rpcecho server on the AD DC can request
that the
                  server block for a user-defined amount of time, denying
                  service.
https://www.samba.org/samba/security/CVE-2023-42669.html

o CVE-2023-42670: Samba can be made to start multiple incompatible RPC
                  listeners, disrupting service on the AD DC.
https://www.samba.org/samba/security/CVE-2023-42670.html

Changes
-------

o  Jeremy Allison [jra@samba.org]
   * BUG 15422: CVE-2023-3961.

o  Andrew Bartlett [abartlet@samba.org]
   * BUG 15424: CVE-2023-4154.
   * BUG 15473: CVE-2023-42670.
   * BUG 15474: CVE-2023-42669.

o  Ralph Boehme [slow@samba.org]
   * BUG 15439: CVE-2023-4091.

#######################################
Reporting bugs & Development Discussion
#######################################

Please discuss this release on the samba-technical mailing list or by
joining the #samba-technical:matrix.org matrix room, or
#samba-technical IRC channel on irc.libera.chat.

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-4.19.1.html
        https://www.samba.org/samba/history/samba-4.18.8.html
        https://www.samba.org/samba/history/samba-4.17.12.html

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

                        --Enjoy
                        The Samba Team