Releasing 1.1pre17.

NEWS

@@ -1,3 +1,16 @@
+# Version 1.1pre17             October 8 2018
+
+* Prevent oracle attacks in the legacy protocol (CVE-2018-16737,
+  CVE-2018-16738).
+* Prevent a MITM from forcing a NULL cipher for UDP in the legacy protocol
+  (CVE-2018-16758).
+* AutoConnect is now enabled by default.
+* Per-node network traffic statistics are now shown in the output of "info" and
+  "dump nodes" commands.
+
+Thanks to volth and Rafael Sadowski for their contributions to this version of
+tinc.
+
 # Version 1.1pre16             June 12 2018
 
 * Fixed building with support for UML sockets.

README

@@ -1,4 +1,4 @@
-This is the README file for tinc version 1.1pre16. Installation
+This is the README file for tinc version 1.1pre17. Installation
 instructions may be found in the INSTALL file.
 
 tinc is Copyright © 1998-2018 Ivo Timmermans, Guus Sliepen <guus@tinc-vpn.org>, and others.
@@ -28,11 +28,25 @@ Security statement
 This version uses an experimental and unfinished cryptographic protocol. Use it
 at your own risk.
 
+When connecting to nodes that use the legacy protocol used in tinc 1.0, be
+aware that any security issues in tinc 1.0 will apply to tinc 1.1 as well. On
+September 6th, 2018, Michael Yonly contacted us and provided proof-of-concept
+code that allowed a remote attacker to create an authenticated, one-way
+connection with a node using the legacy protocol, and also that there was a
+possibility for a man-in-the-middle to force UDP packets from a node to be sent
+in plaintext. The first issue was trivial to exploit on tinc versions prior to
+1.0.30, but the changes in 1.0.30 to mitigate the Sweet32 attack made this
+weakness much harder to exploit. These issues have been fixed in tinc 1.0.35
+and tinc 1.1pre17. The new protocol in the tinc 1.1 branch is not susceptible
+to these issues. However, be aware that SPTPS is only used between nodes
+running tinc 1.1pre* or later, and in a VPN with nodes running different
+versions, the security might only be as good as that of the oldest version.
+
 
 Compatibility
 -------------
 
-Version 1.1pre16 is compatible with 1.0pre8, 1.0 and later, but not with older
+Version 1.1pre17 is compatible with 1.0pre8, 1.0 and later, but not with older
 versions of tinc.
 
 When the ExperimentalProtocol option is used, tinc is still compatible with
@@ -82,7 +96,7 @@ Ethernet network switch or hub.
 
 Normally, when started tinc will detach and run in the background. In a native
 Windows environment this means tinc will install itself as a service, which will
-restart after reboots.  To prevent tinc from detaching or running as a service,
+restart after reboots. To prevent tinc from detaching or running as a service,
 use the -D option.
 
 The status of the VPN can be queried using the "tinc" command, which connects

doc/tinc.texi

@@ -3375,8 +3375,22 @@ that tinc's default length of 4 bytes for the MAC is too short, and he doesn't
 like tinc's use of RSA during authentication. We do not know of a security hole
 in the legacy protocol of tinc, but it is not as strong as TLS or IPsec.
 
-This version of tinc comes with an improved protocol, called Simple Peer-to-Peer Security,
-which aims to be as strong as TLS with one of the strongest cipher suites.
+The Sweet32 attack affects versions of tinc prior to 1.0.30.
+
+On September 6th, 2018, Michael Yonly contacted us and provided
+proof-of-concept code that allowed a remote attacker to create an
+authenticated, one-way connection with a node, and also that there was a
+possibility for a man-in-the-middle to force UDP packets from a node to be sent
+in plaintext. The first issue was trivial to exploit on tinc versions prior to
+1.0.30, but the changes in 1.0.30 to mitigate the Sweet32 attack made this
+weakness much harder to exploit. These issues have been fixed in tinc 1.0.35.
+
+This version of tinc comes with an improved protocol, called Simple
+Peer-to-Peer Security (SPTPS), which aims to be as strong as TLS with one of
+the strongest cipher suites.  None of the above security issues affected SPTPS.
+However, be aware that SPTPS is only used between nodes running tinc 1.1pre* or
+later, and in a VPN with nodes running different versions, the security might
+only be as good as that of the oldest version.
 
 Cryptography is a hard thing to get right. We cannot make any
 guarantees. Time, review and feedback are the only things that can