From e95f5e03f6f1f8d3f6cbe4b7fa48e57b4cf8fd60 Mon Sep 17 00:00:00 2001
From: Rich Salz <rsalz@openssl.org>
Date: Thu, 18 Aug 2016 09:26:52 -0400
Subject: [PATCH] SWEET32 (CVE-2016-2183): Move DES from HIGH to MEDIUM
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Reviewed-by: Viktor Dukhovni <viktor@openssl.org>
Reviewed-by: Emilia Käsper <emilia@openssl.org>
(cherry picked from commit 0fff5065884d5ac61123a604bbcee30a53c808ff)
---
 CHANGES      |  4 +++-
 ssl/s3_lib.c | 34 +++++++++++++++++-----------------
 2 files changed, 20 insertions(+), 18 deletions(-)

diff --git a/CHANGES b/CHANGES
index 9442f3d9e4..f89b50be63 100644
--- a/CHANGES
+++ b/CHANGES
@@ -4,7 +4,9 @@
 
  Changes between 1.0.1t and 1.0.1u [xx XXX xxxx]
 
-  *)
+  *) In order to mitigate the SWEET32 attack (CVE-2016-2183),
+     the DES ciphers were moved from HIGH to MEDIUM.
+     [Rich Salz]
 
  Changes between 1.0.1s and 1.0.1t [3 May 2016]
 
diff --git a/ssl/s3_lib.c b/ssl/s3_lib.c
index 35d6587da9..6b1822d8f6 100644
--- a/ssl/s3_lib.c
+++ b/ssl/s3_lib.c
@@ -334,7 +334,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -387,7 +387,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -439,7 +439,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -492,7 +492,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -544,7 +544,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -630,7 +630,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -717,7 +717,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -783,7 +783,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_MD5,
      SSL_SSLV3,
-     SSL_NOT_EXP | SSL_HIGH,
+     SSL_NOT_EXP | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -1733,7 +1733,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2110,7 +2110,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2190,7 +2190,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2270,7 +2270,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2350,7 +2350,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2430,7 +2430,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_HIGH | SSL_FIPS,
+     SSL_NOT_DEFAULT | SSL_NOT_EXP | SSL_MEDIUM | SSL_FIPS,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2480,7 +2480,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH,
+     SSL_NOT_EXP | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2496,7 +2496,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH,
+     SSL_NOT_EXP | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
@@ -2512,7 +2512,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[] = {
      SSL_3DES,
      SSL_SHA1,
      SSL_TLSV1,
-     SSL_NOT_EXP | SSL_HIGH,
+     SSL_NOT_EXP | SSL_MEDIUM,
      SSL_HANDSHAKE_MAC_DEFAULT | TLS1_PRF,
      112,
      168,
-- 
2.25.1