Log Message:
net/samba4: update to 4.6.8, security fix

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                   Release Notes for Samba 4.6.8
                         September 20, 2017
                   =============================

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

o  CVE-2017-12150 (SMB1/2/3 connections may not require signing where they
   should)
o  CVE-2017-12151 (SMB3 connections don't keep encryption across DFS redirects)
o  CVE-2017-12163 (Server memory information leak over SMB1)

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Details
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o  CVE-2017-12150:
   A man in the middle attack may hijack client connections.

o  CVE-2017-12151:
   A man in the middle attack can read and may alter confidential
   documents transferred via a client connection, which are reached
   via DFS redirect when the original connection used SMB3.

o  CVE-2017-12163:
   Client with write access to a share can cause server memory contents to be
   written into a file or printer.

For more details and workarounds, please see the security advisories:

   o https://www.samba.org/samba/security/CVE-2017-12150.html
   o https://www.samba.org/samba/security/CVE-2017-12151.html
   o https://www.samba.org/samba/security/CVE-2017-12163.html

Changes since 4.6.7:
--------------------

o  Jeremy Allison <jra@samba.org>
   * BUG 12836: s3: smbd: Fix a read after free if a chained SMB1 call goes
     async.
   * BUG 13020: CVE-2017-12163: s3:smbd: Prevent client short SMB1 write from
     writing server memory to file.

o  Ralph Boehme <slow@samba.org>
   * BUG 12885: s3/smbd: Let non_widelink_open() chdir() to directories
     directly.

o  Stefan Metzmacher <metze@samba.org>
   * BUG 12996: CVE-2017-12151: Keep required encryption across SMB3 dfs
     redirects.
   * BUG 12997: CVE-2017-12150: Some code path don't enforce smb signing
     when they should.