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authorKarolin Seeger <kseeger@samba.org>2016-07-05 12:57:02 +0200
committerKarolin Seeger <kseeger@samba.org>2016-07-05 12:57:02 +0200
commiteb480ea5ee84ca73519b8b9667664cff0aa04e1f (patch)
tree8eab868824f7b1133f38b61fb2c26836cfe21dda
parent13437f93b7bf52eefe8dfa824e31b24722f9ea44 (diff)
downloadsamba-eb480ea5ee84ca73519b8b9667664cff0aa04e1f.tar.gz
WHATSNEW: Add release notes for Samba 4.2.14.
CVE-2016-2119: Client side SMB2 signing downgrade. BUG: https://bugzilla.samba.org/show_bug.cgi?id=11860 Signed-off-by: Karolin Seeger <kseeger@samba.org>
-rw-r--r--WHATSNEW.txt83
1 files changed, 81 insertions, 2 deletions
diff --git a/WHATSNEW.txt b/WHATSNEW.txt
index d061b6cdc45..5ecf9e3cbb4 100644
--- a/WHATSNEW.txt
+++ b/WHATSNEW.txt
@@ -1,4 +1,83 @@
==============================
+ Release Notes for Samba 4.2.14
+ July 07, 2016
+ ==============================
+
+
+This is a security release in order to address the following defect:
+
+o CVE-2016-2119 (Client side SMB2/3 required signing can be downgraded)
+
+=======
+Details
+=======
+
+o CVE-2016-2119:
+ It's possible for an attacker to downgrade the required signing for
+ an SMB2/3 client connection, by injecting the SMB2_SESSION_FLAG_IS_GUEST
+ or SMB2_SESSION_FLAG_IS_NULL flags.
+
+ This means that the attacker can impersonate a server being connected to by
+ Samba, and return malicious results.
+
+ The primary concern is with winbindd, as it uses DCERPC over SMB2 when talking
+ to domain controllers as a member server, and trusted domains as a domain
+ controller. These DCE/RPC connections were intended to protected by the
+ combination of "client ipc signing" and
+ "client ipc max protocol" in their effective default settings
+ ("mandatory" and "SMB3_11").
+
+ Additionally, management tools like net, samba-tool and rpcclient use DCERPC
+ over SMB2/3 connections.
+
+ By default, other tools in Samba are unprotected, but rarely they are
+ configured to use smb signing, via the "client signing" parameter (the default
+ is "if_required"). Even more rarely the "client max protocol" is set to SMB2,
+ rather than the NT1 default.
+
+ If both these conditions are met, then this issue would also apply to these
+ other tools, including command line tools like smbcacls, smbcquota, smbclient,
+ smbget and applications using libsmbclient.
+
+
+Changes since 4.2.13:
+---------------------
+
+o Amitay Isaacs <amitay@gmail.com>
+ * BUG 11705: Fix sockets with htons(IPPROTO_RAW) and CVE-2015-8543 (Kernel).
+ * BUG 11770: ctdb-common: For AF_PACKET socket types, protocol is in network
+ order.
+
+
+o Stefan Metzmacher <metze@samba.org>
+ * BUG 11860: CVE-2016-2119: Fix client side SMB2 signing downgrade.
+ * BUG 11948: Total dcerpc response payload more than 0x400000.
+
+
+#######################################
+Reporting bugs & Development Discussion
+#######################################
+
+Please discuss this release on the samba-technical mailing list or by
+joining the #samba-technical IRC channel on irc.freenode.net.
+
+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
+======================================================================
+
+
+Release notes for older releases follow:
+----------------------------------------
+
+ ==============================
Release Notes for Samba 4.2.13
June 17, 2016
==============================
@@ -50,8 +129,8 @@ database (https://bugzilla.samba.org/).
======================================================================
-Release notes for older releases follow:
-----------------------------------------
+----------------------------------------------------------------------
+
==============================
Release Notes for Samba 4.2.12