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Disable SHA-2 ciphersuites in < TLS 1.2 connections. 

(TLS 1.2 clients could end up negotiating these with an OpenSSL server
with TLS 1.2 disabled, which is problematic.)

Submitted by: Adam Langley
This commit is contained in:
Bodo Möller 2012-04-17 15:20:17 +00:00
parent 89bd25eb26
commit 4d936ace08
2 changed files with 16 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
CHANGES
View File

@ -4,6 +4,9 @@
Changes between 1.0.1 and 1.0.1a [xx XXX xxxx]
*) Don't allow TLS 1.2 SHA-256 ciphersuites in TLS 1.0, 1.1 connections.
[Adam Langley]
*) Workarounds for some broken servers that "hang" if a client hello
record length exceeds 255 bytes.

26
ssl/s3_lib.c
View File

@ -1081,7 +1081,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aRSA,
SSL_eNULL,
SSL_SHA256,
SSL_SSLV3,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_STRONG_NONE|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
0,
@ -1097,7 +1097,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aRSA,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1113,7 +1113,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aRSA,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,
@ -1129,7 +1129,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDH,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1145,7 +1145,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDH,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1161,7 +1161,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDSS,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1395,7 +1395,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aRSA,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1411,7 +1411,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDH,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,
@ -1427,7 +1427,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDH,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,
@ -1443,7 +1443,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aDSS,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,
@ -1459,7 +1459,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aRSA,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,
@ -1475,7 +1475,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aNULL,
SSL_AES128,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
128,
@ -1491,7 +1491,7 @@ OPENSSL_GLOBAL SSL_CIPHER ssl3_ciphers[]={
SSL_aNULL,
SSL_AES256,
SSL_SHA256,
SSL_TLSV1,
SSL_TLSV1_2,
SSL_NOT_EXP|SSL_HIGH|SSL_FIPS,
SSL_HANDSHAKE_MAC_DEFAULT|TLS1_PRF,
256,