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Enforce using EMS in FIPS mode - better alerts

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Related: rhbz#2157951
This commit is contained in:
Dmitry Belyavskiy 2023-05-09 12:44:49 +02:00
parent 05bbcc9920
commit 032dc0839c
2 changed files with 59 additions and 1 deletions
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54
0114-FIPS-enforce-EMS-support.patch
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@ -417,3 +417,57 @@ diff -up openssl-3.0.7/test/recipes/30-test_evp_data/evpkdf_tls12_prf.txt.xxx op
KDF = TLS1-PRF
Ctrl.digest = digest:SHA256
Ctrl.Secret = hexsecret:202c88c00f84a17a20027079604787461176455539e705be730890602c289a5001e34eeb3a043e5d52a65e66125188bf
diff -up openssl-3.0.7/ssl/t1_enc.c.noems openssl-3.0.7/ssl/t1_enc.c
--- openssl-3.0.7/ssl/t1_enc.c.noems 2023-05-05 11:15:57.934415272 +0200
+++ openssl-3.0.7/ssl/t1_enc.c 2023-05-05 11:39:03.578163778 +0200
@@ -20,6 +20,7 @@
#include <openssl/obj_mac.h>
#include <openssl/core_names.h>
#include <openssl/trace.h>
+#include <openssl/fips.h>
/* seed1 through seed5 are concatenated */
static int tls1_PRF(SSL *s,
@@ -75,8 +76,14 @@ static int tls1_PRF(SSL *s,
}
err:
- if (fatal)
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
+ if (fatal) {
+ /* The calls to this function are local so it's safe to implement the check */
+ if (FIPS_mode() && seed1_len >= TLS_MD_MASTER_SECRET_CONST_SIZE
+ && memcmp(seed1, TLS_MD_MASTER_SECRET_CONST, TLS_MD_MASTER_SECRET_CONST_SIZE) == 0)
+ SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, ERR_R_UNSUPPORTED);
+ else
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
+ }
else
ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
EVP_KDF_CTX_free(kctx);
diff -up openssl-3.0.7/ssl/statem/extensions_srvr.c.noems openssl-3.0.7/ssl/statem/extensions_srvr.c
--- openssl-3.0.7/ssl/statem/extensions_srvr.c.noems 2023-05-05 17:14:04.663800271 +0200
+++ openssl-3.0.7/ssl/statem/extensions_srvr.c 2023-05-05 17:20:33.764599507 +0200
@@ -11,6 +11,7 @@
#include "../ssl_local.h"
#include "statem_local.h"
#include "internal/cryptlib.h"
+#include <openssl/fips.h>
#define COOKIE_STATE_FORMAT_VERSION 1
@@ -1552,8 +1553,13 @@ EXT_RETURN tls_construct_stoc_etm(SSL *s
EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
X509 *x, size_t chainidx)
{
- if ((s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) == 0)
+ if ((s->s3.flags & TLS1_FLAGS_RECEIVED_EXTMS) == 0) {
+ if (FIPS_mode()) {
+ SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, ERR_R_UNSUPPORTED);
+ return EXT_RETURN_FAIL;
+ }
return EXT_RETURN_NOT_SENT;
+ }
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_extended_master_secret)
|| !WPACKET_put_bytes_u16(pkt, 0)) {

6
openssl.spec
View File

@ -29,7 +29,7 @@ print(string.sub(hash, 0, 16))
Summary: Utilities from the general purpose cryptography library with TLS implementation
Name: openssl
Version: 3.0.7
Release: 16%{?dist}
Release: 17%{?dist}
Epoch: 1
# We have to remove certain patented algorithms from the openssl source
# tarball with the hobble-openssl script which is included below.
@ -515,6 +515,10 @@ install -m644 %{SOURCE9} \
%ldconfig_scriptlets libs
%changelog
* Tue May 09 2023 Dmitry Belyavskiy <dbelyavs@redhat.com> - 1:3.0.7-17
- Enforce using EMS in FIPS mode - better alerts
Related: rhbz#2157951
* Tue May 02 2023 Sahana Prasad <sahana@redhat.com> - 1:3.0.7-16
- Upload new upstream sources without manually hobbling them.
- Remove the hobbling script as it is redundant. It is now allowed to ship