From: Stefan Metzmacher <metze@samba.org>
Date: Mon, 5 Dec 2022 20:31:37 +0000 (+0100)
Subject: CVE-2022-37966 docs-xml/smbdotconf: "kerberos encryption types = legacy" should not... 
X-Git-Tag: samba-4.15.13~57
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=097fa693ded841cf81ffaf143f3501aa1ff45892;p=thirdparty%2Fsamba.git

CVE-2022-37966 docs-xml/smbdotconf: "kerberos encryption types = legacy" should not be used

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15237

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
(cherry picked from commit a4f6f51cbed53775cdfedc7eec2f28c7beb875cc)
---

diff --git a/docs-xml/smbdotconf/security/kerberosencryptiontypes.xml b/docs-xml/smbdotconf/security/kerberosencryptiontypes.xml
index 2c3c6c5d5fc..a245af55f5f 100644
--- a/docs-xml/smbdotconf/security/kerberosencryptiontypes.xml
+++ b/docs-xml/smbdotconf/security/kerberosencryptiontypes.xml
@@ -37,15 +37,9 @@
     </para>
 
     <para>When set to <constant>legacy</constant>, only RC4-HMAC-MD5
-    is allowed. Avoiding AES this way has one a very specific use.
-    Normally, the encryption type is negotiated between the peers.
-    However, there is one scenario in which a Windows read-only domain
-    controller (RODC) advertises AES encryption, but then proxies the
-    request to a writeable DC which may not support AES encryption,
-    leading to failure of the handshake. Setting this parameter to
-    <constant>legacy</constant> would cause samba not to negotiate AES
-    encryption. It is assumed of course that the weaker legacy
-    encryption types are acceptable for the setup.
+    is allowed. AVOID using this option, because of
+    <ulink url="https://www.samba.org/samba/security/CVE-2022-37966.html">CVE-2022-37966</ulink> see
+    <ulink url="https://bugzilla.samba.org/show_bug.cgi?id=15237">https://bugzilla.samba.org/show_bug.cgi?id=15237</ulink>.
     </para>
 </description>