Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 117 insertions, 0 deletions

diff --git a/docs-xml/smbdotconf/security/serverschannelrequireseal.xml b/docs-xml/smbdotconf/security/serverschannelrequireseal.xml
new file mode 100644
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+++ b/docs-xml/smbdotconf/security/serverschannelrequireseal.xml
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+<samba:parameter name="server schannel require seal"
+                 context="G"
+                 type="boolean"
+                 deprecated="1"
+                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<description>
+
+	<para>
+	This option is deprecated and will be removed in future,
+	as it is a security problem if not set to "yes" (which will be
+	the hardcoded behavior in future).
+	</para>
+
+	<para>
+	This option controls whether the netlogon server, will reject the usage
+	of netlogon secure channel without privacy/enryption.
+	</para>
+
+	<para>
+	The option is modelled after the registry key available on Windows.
+	</para>
+
+	<programlisting>
+	HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\RequireSeal=2
+	</programlisting>
+
+	<para>
+	<emphasis>Avoid using this option!</emphasis> Use the per computer account specific option
+	'<smbconfoption name="server schannel require seal:COMPUTERACCOUNT"/>' instead!
+	Which is available with the patches for
+	<ulink url="https://www.samba.org/samba/security/CVE-2022-38023.html">CVE-2022-38023</ulink>
+	see <ulink url="https://bugzilla.samba.org/show_bug.cgi?id=15240">https://bugzilla.samba.org/show_bug.cgi?id=15240</ulink>.
+	</para>
+
+	<para>
+	Samba will log an error in the log files at log level 0
+	if legacy a client is rejected or allowed without an explicit,
+	'<smbconfoption name="server schannel require seal:COMPUTERACCOUNT">no</smbconfoption>' option
+	for the client. The message will indicate
+	the explicit '<smbconfoption name="server schannel require seal:COMPUTERACCOUNT">no</smbconfoption>'
+	line to be added, if the legacy client software requires it. (The log level can be adjusted with
+	'<smbconfoption name="CVE_2022_38023:error_debug_level">1</smbconfoption>'
+	in order to complain only at a higher log level).
+	</para>
+
+	<para>This allows admins to use "no" only for a short grace period,
+	in order to collect the explicit
+	'<smbconfoption name="server schannel require seal:COMPUTERACCOUNT">no</smbconfoption>' options.</para>
+
+	<para>
+	When set to 'yes' this option overrides the
+	'<smbconfoption name="server require schannel:COMPUTERACCOUNT"/>' and
+	'<smbconfoption name="server schannel"/>' options and implies
+	'<smbconfoption name="server require schannel:COMPUTERACCOUNT">yes</smbconfoption>'.
+	</para>
+
+	<para>
+	This option is over-ridden by the <smbconfoption name="server schannel require seal:COMPUTERACCOUNT"/> option.
+	</para>
+
+</description>
+
+<value type="default">yes</value>
+</samba:parameter>
+
+<samba:parameter name="server schannel require seal:COMPUTERACCOUNT"
+                 context="G"
+                 type="string"
+                 xmlns:samba="http://www.samba.org/samba/DTD/samba-doc">
+<description>
+
+	<para>
+	If you still have legacy domain members, which required "server schannel require seal = no" before,
+	it is possible to specify explicit exception per computer account
+	by using 'server schannel require seal:COMPUTERACCOUNT = no' as option.
+	Note that COMPUTERACCOUNT has to be the sAMAccountName value of
+	the computer account (including the trailing '$' sign).
+	</para>
+
+	<para>
+	Samba will log a complaint in the log files at log level 0
+	about the security problem if the option is set to "no",
+	but the related computer does not require it.
+	(The log level can be adjusted with
+	'<smbconfoption name="CVE_2022_38023:warn_about_unused_debug_level">1</smbconfoption>'
+	in order to complain only at a higher log level).
+	</para>
+
+	<para>
+	Samba will warn in the log files at log level 5,
+	if a setting is still needed for the specified computer account.
+	</para>
+
+	<para>
+	See <ulink url="https://www.samba.org/samba/security/CVE-2022-38023.html">CVE-2022-38023</ulink>,
+	<ulink url="https://bugzilla.samba.org/show_bug.cgi?id=15240">https://bugzilla.samba.org/show_bug.cgi?id=15240</ulink>.
+	</para>
+
+	<para>
+	This option overrides the '<smbconfoption name="server schannel require seal"/>' option.
+	</para>
+
+	<para>
+	When set to 'yes' this option overrides the
+	'<smbconfoption name="server require schannel:COMPUTERACCOUNT"/>' and
+	'<smbconfoption name="server schannel"/>' options and implies
+	'<smbconfoption name="server require schannel:COMPUTERACCOUNT">yes</smbconfoption>'.
+	</para>
+
+	<programlisting>
+	server require schannel seal:LEGACYCOMPUTER1$ = no
+	server require schannel seal:NASBOX$ = no
+	server require schannel seal:LEGACYCOMPUTER2$ = no
+	</programlisting>
+</description>
+
+</samba:parameter>