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Accepting request 1003480 from home:pmonrealgonzalez:branches:security:tls

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- FIPS: Additional modifications to the SLI. [bsc#1190698]
  * Mark CMAC and GMAC and non-approved in gnutls_pbkfd2().
  * Mark HMAC keylength less than 112 bits as non-approved in
    gnutls_pbkfd2().
  * Adapt the pbkdf2 selftest and the regression tests accordingly.
  * Add gnutls-FIPS-SLI-pbkdf2-verify-keylengths-only-SHA.patch

- FIPS: Port GnuTLS to use jitterentropy [bsc#1202146, jsc#SLE-24941]
  * Add new dependency on jitterentropy
  * Add gnutls-FIPS-jitterentropy.patch

- FIPS:
  * Add gnutls_ECDSA_signing.patch [bsc#1190698]
    - Check minimum keylength for symmetric key generation
    - Only allows ECDSA signature with valid set of hashes
      (SHA2 and SHA3)

OBS-URL: https://build.opensuse.org/request/show/1003480
OBS-URL: https://build.opensuse.org/package/show/security:tls/gnutls?expand=0&rev=73
This commit is contained in:
Pedro Monreal Gonzalez 2022-09-14 08:41:21 +00:00 committed by Git OBS Bridge
parent eeb9cb6281
commit 5fcfc4e55e
5 changed files with 516 additions and 0 deletions
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114
gnutls-FIPS-SLI-pbkdf2-verify-keylengths-only-SHA.patch Normal file
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@ -0,0 +1,114 @@
Index: gnutls-3.7.7/lib/crypto-api.c
===================================================================
--- gnutls-3.7.7.orig/lib/crypto-api.c
+++ gnutls-3.7.7/lib/crypto-api.c
@@ -2228,7 +2228,12 @@ gnutls_pbkdf2(gnutls_mac_algorithm_t mac
if (!is_mac_algo_allowed(mac)) {
_gnutls_switch_fips_state(GNUTLS_FIPS140_OP_ERROR);
return gnutls_assert_val(GNUTLS_E_UNWANTED_ALGORITHM);
- } else if (!is_mac_algo_approved_in_fips(mac)) {
+ } else if (!is_mac_algo_approved_for_pbkdf2_in_fips(mac)) {
+ not_approved = true;
+ }
+
+ /* Key lengthes less than 112 bits are not approved */
+ if (length < 14 || key->size < 14) {
not_approved = true;
}
Index: gnutls-3.7.7/lib/fips.h
===================================================================
--- gnutls-3.7.7.orig/lib/fips.h
+++ gnutls-3.7.7/lib/fips.h
@@ -100,6 +100,25 @@ is_mac_algo_approved_in_fips(gnutls_mac_
}
inline static bool
+is_mac_algo_approved_for_pbkdf2_in_fips(gnutls_mac_algorithm_t algo)
+{
+ switch (algo) {
+ case GNUTLS_MAC_SHA1:
+ case GNUTLS_MAC_SHA256:
+ case GNUTLS_MAC_SHA384:
+ case GNUTLS_MAC_SHA512:
+ case GNUTLS_MAC_SHA224:
+ case GNUTLS_MAC_SHA3_224:
+ case GNUTLS_MAC_SHA3_256:
+ case GNUTLS_MAC_SHA3_384:
+ case GNUTLS_MAC_SHA3_512:
+ return true;
+ default:
+ return false;
+ }
+}
+
+inline static bool
is_mac_algo_allowed_in_fips(gnutls_mac_algorithm_t algo)
{
return is_mac_algo_approved_in_fips(algo);
Index: gnutls-3.7.7/lib/crypto-selftests.c
===================================================================
--- gnutls-3.7.7.orig/lib/crypto-selftests.c
+++ gnutls-3.7.7/lib/crypto-selftests.c
@@ -3090,30 +3090,6 @@ struct pbkdf2_vectors_st {
};
const struct pbkdf2_vectors_st pbkdf2_sha256_vectors[] = {
- /* RFC 7914: 11. Test Vectors for PBKDF2 with HMAC-SHA-256 */
- {
- STR(key, key_size, "passwd"),
- STR(salt, salt_size, "salt"),
- .iter_count = 1,
- STR(output, output_size,
- "\x55\xac\x04\x6e\x56\xe3\x08\x9f\xec\x16\x91\xc2\x25\x44"
- "\xb6\x05\xf9\x41\x85\x21\x6d\xde\x04\x65\xe6\x8b\x9d\x57"
- "\xc2\x0d\xac\xbc\x49\xca\x9c\xcc\xf1\x79\xb6\x45\x99\x16"
- "\x64\xb3\x9d\x77\xef\x31\x7c\x71\xb8\x45\xb1\xe3\x0b\xd5"
- "\x09\x11\x20\x41\xd3\xa1\x97\x83"),
- },
- /* RFC 7914: 11. Test Vectors for PBKDF2 with HMAC-SHA-256 */
- {
- STR(key, key_size, "Password"),
- STR(salt, salt_size, "NaCl"),
- .iter_count = 80000,
- STR(output, output_size,
- "\x4d\xdc\xd8\xf6\x0b\x98\xbe\x21\x83\x0c\xee\x5e\xf2\x27"
- "\x01\xf9\x64\x1a\x44\x18\xd0\x4c\x04\x14\xae\xff\x08\x87"
- "\x6b\x34\xab\x56\xa1\xd4\x25\xa1\x22\x58\x33\x54\x9a\xdb"
- "\x84\x1b\x51\xc9\xb3\x17\x6a\x27\x2b\xde\xbb\xa1\xd0\x78"
- "\x47\x8f\x62\xb3\x97\xf3\x3c\x8d"),
- },
/* Test vector extracted from:
* https://dev.gnupg.org/source/libgcrypt/browse/master/cipher/kdf.c */
{
Index: gnutls-3.7.7/tests/kdf-api.c
===================================================================
--- gnutls-3.7.7.orig/tests/kdf-api.c
+++ gnutls-3.7.7/tests/kdf-api.c
@@ -192,14 +192,19 @@ doit(void)
"2d2d0a90cf1a5a4c5db02d56ecc4c5bf"
"34007208d5b887185865");
- /* Test vector from RFC 6070. More thorough testing is done
- * in nettle. */
- test_pbkdf2(GNUTLS_MAC_SHA1,
- "70617373776f7264", /* "password" */
- "73616c74", /* "salt" */
+ /* Test vector extracted from:
+ * https://dev.gnupg.org/source/libgcrypt/browse/master/cipher/kdf.c */
+ test_pbkdf2(GNUTLS_MAC_SHA256,
+ "70617373776f726450415353"
+ "574f524470617373776f7264", /* "passwordPASSWORDpassword" */
+ "73616c7453414c5473616c74"
+ "53414c5473616c7453414c54"
+ "73616c7453414c5473616c74", /* "saltSALTsaltSALTsaltSALTsaltSALTsalt" */
4096,
- 20,
- "4b007901b765489abead49d926f721d065a429c1");
+ 40,
+ "348c89dbcbd32b2f32d814b8"
+ "116e84cf2b17347ebc180018"
+ "1c4e2a1fb8dd53e1c635518c7dac47e9");
gnutls_fips140_context_deinit(fips_context);
}

195
gnutls-FIPS-jitterentropy.patch Normal file
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@ -0,0 +1,195 @@
Index: gnutls-3.7.3/lib/nettle/sysrng-linux.c
===================================================================
--- gnutls-3.7.3.orig/lib/nettle/sysrng-linux.c
+++ gnutls-3.7.3/lib/nettle/sysrng-linux.c
@@ -49,6 +49,12 @@
get_entropy_func _rnd_get_system_entropy = NULL;
#if defined(__linux__)
+# ifdef ENABLE_FIPS140
+# define HAVE_JENT
+# include <jitterentropy.h>
+static int jent_initialized = 0;
+static struct rand_data* ec = NULL;
+# endif
# ifdef HAVE_GETRANDOM
# include <sys/random.h>
# else
@@ -66,6 +72,96 @@ static ssize_t _getrandom0(void *buf, si
# endif
# endif
+# if defined(HAVE_JENT)
+/* check whether the CPU Jitter entropy collector is available. */
+static unsigned FIPS_jent_entropy_init(void)
+{
+ unsigned int rv = 1;
+ unsigned int osr = 1; /* <OSR> Oversampling rate */
+ unsigned int flags = 0; /* JENT_FORCE_FIPS
+ * JENT_DISABLE_MEMORY_ACCESS
+ * JENT_DISABLE_INTERNAL_TIMER
+ * JENT_FORCE_INTERNAL_TIMER
+ * JENT_MAX_MEMSIZE_{32,64,128,256,512}kB
+ * JENT_MAX_MEMSIZE_{1,2,4,8,16,32,64,128,256,512}MB
+ */
+
+ /* Set the FIPS flag. */
+ flags |= JENT_FORCE_FIPS;
+
+ /* Do not re-initialize jent. */
+ if (jent_initialized == 0) {
+ if (jent_entropy_init_ex(osr, flags))
+ return 0;
+ jent_initialized = 1;
+ }
+
+ /* Allocate the entropy collector. */
+ if (ec == NULL) {
+ ec = jent_entropy_collector_alloc(osr, flags);
+ if (ec == NULL) {
+ rv = 0;
+ }
+ }
+
+ return rv;
+}
+
+void FIPS_jent_entropy_deinit(void)
+{
+ /* Free the entropy collector. */
+ if (ec != NULL) {
+ jent_entropy_collector_free(ec);
+ ec = NULL;
+ }
+
+ return;
+}
+
+/* returns exactly the amount of bytes requested */
+static int force_jent(void *buf, size_t buflen, unsigned int flags,
+ unsigned int osr)
+{
+ static int jent_bytes = -1;
+
+ if (buf == NULL || buflen == 0) {
+ return -1;
+ }
+
+ /* Ensure the entropy source has been fully initiated. */
+ if (jent_initialized == 0 || ec == NULL) {
+ if (!FIPS_jent_entropy_init()) {
+ return -1;
+ }
+ }
+
+ /* Get entropy bytes. */
+ jent_bytes = jent_read_entropy_safe(&ec, (char *)buf, buflen);
+
+ return jent_bytes;
+}
+
+static int _rnd_get_system_entropy_jent(void* _rnd, size_t size)
+{
+ int ret;
+ unsigned int osr = 1;
+ unsigned int flags = 0;
+
+ /* Set the FIPS flag. */
+ flags |= JENT_FORCE_FIPS;
+
+ ret = force_jent(_rnd, size, flags, osr);
+ if (ret < 0) {
+ int e = errno;
+ gnutls_assert();
+ _gnutls_debug_log("Failed to use jent: %s\n", strerror(e));
+ FIPS_jent_entropy_deinit();
+ return GNUTLS_E_RANDOM_DEVICE_ERROR;
+ }
+
+ return 0;
+}
+# endif
static unsigned have_getrandom(void)
{
@@ -164,6 +260,16 @@ int _rnd_system_entropy_init(void)
int urandom_fd;
#if defined(__linux__)
+# if defined(HAVE_JENT)
+ /* Enable jitterentropy usage if available */
+ if (FIPS_jent_entropy_init()) {
+ _rnd_get_system_entropy = _rnd_get_system_entropy_jent;
+ _gnutls_debug_log("jitterentropy random generator was selected\n");
+ return 0;
+ } else {
+ _gnutls_debug_log("jitterentropy is not available\n");
+ }
+# endif
/* Enable getrandom() usage if available */
if (have_getrandom()) {
_rnd_get_system_entropy = _rnd_get_system_entropy_getrandom;
@@ -193,6 +299,11 @@ int _rnd_system_entropy_init(void)
void _rnd_system_entropy_deinit(void)
{
/* A no-op now when we open and close /dev/urandom every time */
+#if defined(__linux__)
+# if defined(HAVE_JENT)
+ FIPS_jent_entropy_deinit();
+# endif
+#endif
return;
}
Index: gnutls-3.7.3/lib/nettle/Makefile.in
===================================================================
--- gnutls-3.7.3.orig/lib/nettle/Makefile.in
+++ gnutls-3.7.3/lib/nettle/Makefile.in
@@ -398,7 +398,7 @@ am__v_CC_1 =
CCLD = $(CC)
LINK = $(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) \
$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
- $(AM_LDFLAGS) $(LDFLAGS) -o $@
+ $(AM_LDFLAGS) $(LDFLAGS) -ljitterentropy -o $@
AM_V_CCLD = $(am__v_CCLD_@AM_V@)
am__v_CCLD_ = $(am__v_CCLD_@AM_DEFAULT_V@)
am__v_CCLD_0 = @echo " CCLD " $@;
Index: gnutls-3.7.3/lib/nettle/Makefile.am
===================================================================
--- gnutls-3.7.3.orig/lib/nettle/Makefile.am
+++ gnutls-3.7.3/lib/nettle/Makefile.am
@@ -20,7 +20,7 @@
include $(top_srcdir)/lib/common.mk
-AM_CFLAGS += $(HOGWEED_CFLAGS) $(GMP_CFLAGS)
+AM_CFLAGS += $(HOGWEED_CFLAGS) $(GMP_CFLAGS) -ljitterentropy
AM_CPPFLAGS = \
-I$(srcdir)/int \
Index: gnutls-3.7.3/lib/nettle/rnd-fips.c
===================================================================
--- gnutls-3.7.3.orig/lib/nettle/rnd-fips.c
+++ gnutls-3.7.3/lib/nettle/rnd-fips.c
@@ -129,6 +129,10 @@ static int drbg_init(struct fips_ctx *fc
uint8_t buffer[DRBG_AES_SEED_SIZE];
int ret;
+ ret = _rnd_get_system_entropy(buffer, sizeof(buffer));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
ret = get_entropy(fctx, buffer, sizeof(buffer));
if (ret < 0) {
_gnutls_switch_fips_state(GNUTLS_FIPS140_OP_ERROR);
@@ -153,6 +157,10 @@ static int drbg_reseed(struct fips_ctx *
uint8_t buffer[DRBG_AES_SEED_SIZE];
int ret;
+ ret = _rnd_get_system_entropy(buffer, sizeof(buffer));
+ if (ret < 0)
+ return gnutls_assert_val(ret);
+
ret = get_entropy(fctx, buffer, sizeof(buffer));
if (ret < 0) {
_gnutls_switch_fips_state(GNUTLS_FIPS140_OP_ERROR);

26
gnutls.changes
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@ -4,6 +4,23 @@ Tue Sep 13 18:08:03 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de>
- provide a libgnutls30-hmac-32bit to avoid uninstallable wine
when pattern-base-fips is installed [boo#1203353]
-------------------------------------------------------------------
Tue Sep 6 16:17:12 UTC 2022 - Pedro Monreal <pmonreal@suse.com>
- FIPS: Additional modifications to the SLI. [bsc#1190698]
* Mark CMAC and GMAC and non-approved in gnutls_pbkfd2().
* Mark HMAC keylength less than 112 bits as non-approved in
gnutls_pbkfd2().
* Adapt the pbkdf2 selftest and the regression tests accordingly.
* Add gnutls-FIPS-SLI-pbkdf2-verify-keylengths-only-SHA.patch
-------------------------------------------------------------------
Mon Aug 8 16:41:19 UTC 2022 - Pedro Monreal <pmonreal@suse.com>
- FIPS: Port GnuTLS to use jitterentropy [bsc#1202146, jsc#SLE-24941]
* Add new dependency on jitterentropy
* Add gnutls-FIPS-jitterentropy.patch
-------------------------------------------------------------------
Fri Jul 29 14:29:17 UTC 2022 - Pedro Monreal <pmonreal@suse.com>
@ -53,6 +70,15 @@ Fri Jul 29 14:29:17 UTC 2022 - Pedro Monreal <pmonreal@suse.com>
- gnutls-FIPS-PBKDF2-KAT-requirements.patch
- https://gitlab.com/gnutls/gnutls/merge_requests/1561
-------------------------------------------------------------------
Wed Jun 29 15:56:59 UTC 2022 - Richard Costa <richard.costa@suse.com>
- FIPS:
* Add gnutls_ECDSA_signing.patch [bsc#1190698]
- Check minimum keylength for symmetric key generation
- Only allows ECDSA signature with valid set of hashes
(SHA2 and SHA3)
-------------------------------------------------------------------
Fri May 27 16:56:26 UTC 2022 - Antoine Belvire <antoine.belvire@opensuse.org>

9
gnutls.spec
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@ -50,6 +50,13 @@ Patch0: gnutls-3.5.11-skip-trust-store-tests.patch
Patch1: gnutls-3.6.6-set_guile_site_dir.patch
Patch2: gnutls-FIPS-TLS_KDF_selftest.patch
Patch3: gnutls-FIPS-disable-failing-tests.patch
Patch4: gnutls_ECDSA_signing.patch
%if 0%{?suse_version} >= 1550 || 0%{?sle_version} >= 150400
#PATCH-FIX-SUSE bsc#1202146 FIPS: Port gnutls to use jitterentropy
Patch5: gnutls-FIPS-jitterentropy.patch
%endif
#PATCH-FIX-SUSE bsc#1190698 FIPS: SLI gnutls_pbkdf2: verify keylengths and allow SHA only
Patch6: gnutls-FIPS-SLI-pbkdf2-verify-keylengths-only-SHA.patch
BuildRequires: autogen
BuildRequires: automake
BuildRequires: datefudge
@ -94,6 +101,8 @@ BuildRequires: guile-devel > 1.8
%if 0%{?suse_version} >= 1550 || 0%{?sle_version} >= 150400
BuildRequires: crypto-policies
Requires: crypto-policies
BuildRequires: jitterentropy-devel >= 3.4.0
Requires: libjitterentropy3 >= 3.4.0
%endif
%description

172
gnutls_ECDSA_signing.patch Normal file
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@ -0,0 +1,172 @@
Index: gnutls-3.7.7/lib/crypto-api.c
===================================================================
--- gnutls-3.7.7.orig/lib/crypto-api.c
+++ gnutls-3.7.7/lib/crypto-api.c
@@ -1056,6 +1056,7 @@ gnutls_hash_hd_t gnutls_hash_copy(gnutls
int gnutls_key_generate(gnutls_datum_t * key, unsigned int key_size)
{
int ret;
+ bool not_approved = false;
FAIL_IF_LIB_ERROR;
@@ -1066,6 +1067,10 @@ int gnutls_key_generate(gnutls_datum_t *
if (_gnutls_fips_mode_enabled() != 0 &&
key_size > FIPS140_RND_KEY_SIZE)
return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
+ if (key_size < 14) {
+ not_approved = true;
+ }
+
#endif
key->size = key_size;
@@ -1082,6 +1087,15 @@ int gnutls_key_generate(gnutls_datum_t *
return ret;
}
+#ifdef ENABLE_FIPS140
+ if (not_approved) {
+ _gnutls_switch_fips_state(GNUTLS_FIPS140_OP_NOT_APPROVED);
+ } else {
+ _gnutls_switch_fips_state(GNUTLS_FIPS140_OP_APPROVED);
+ }
+
+#endif
+
return 0;
}
Index: gnutls-3.7.7/lib/fips.h
===================================================================
--- gnutls-3.7.7.orig/lib/fips.h
+++ gnutls-3.7.7/lib/fips.h
@@ -145,6 +145,30 @@ is_cipher_algo_allowed_in_fips(gnutls_ci
}
}
+inline static bool
+is_digest_algo_approved_for_sign_in_fips(gnutls_digest_algorithm_t algo)
+{
+ switch (algo) {
+ case GNUTLS_DIG_SHA224:
+ case GNUTLS_DIG_SHA256:
+ case GNUTLS_DIG_SHA384:
+ case GNUTLS_DIG_SHA512:
+ case GNUTLS_DIG_SHA3_224:
+ case GNUTLS_DIG_SHA3_256:
+ case GNUTLS_DIG_SHA3_384:
+ case GNUTLS_DIG_SHA3_512:
+ return true;
+ default:
+ return false;
+ }
+}
+
+inline static bool
+is_digest_algo_allowed_for_sign_in_fips(gnutls_digest_algorithm_t algo)
+{
+ return is_digest_algo_approved_for_sign_in_fips(algo);
+}
+
#ifdef ENABLE_FIPS140
/* This will test the condition when in FIPS140-2 mode
* and return an error if necessary or ignore */
@@ -205,9 +229,33 @@ is_cipher_algo_allowed(gnutls_cipher_alg
return true;
}
+
+inline static bool
+is_digest_algo_allowed_for_sign(gnutls_digest_algorithm_t algo)
+{
+ gnutls_fips_mode_t mode = _gnutls_fips_mode_enabled();
+ if (_gnutls_get_lib_state() != LIB_STATE_SELFTEST &&
+ !is_digest_algo_allowed_for_sign_in_fips(algo)) {
+ switch (mode) {
+ case GNUTLS_FIPS140_LOG:
+ _gnutls_audit_log(NULL, "fips140-2: allowing access to %s\n",
+ gnutls_cipher_get_name(algo));
+ FALLTHROUGH;
+ case GNUTLS_FIPS140_DISABLED:
+ case GNUTLS_FIPS140_LAX:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ return true;
+}
+
#else
# define is_mac_algo_allowed(x) true
# define is_cipher_algo_allowed(x) true
+# define is_digest_algo_allowed_for_sign(x) true
# define FIPS_RULE(condition, ret_error, ...)
#endif
Index: gnutls-3.7.7/lib/privkey.c
===================================================================
--- gnutls-3.7.7.orig/lib/privkey.c
+++ gnutls-3.7.7/lib/privkey.c
@@ -1284,10 +1284,24 @@ privkey_sign_and_hash_data(gnutls_privke
int ret;
gnutls_datum_t digest;
const mac_entry_st *me;
+ bool not_approved = false;
if (unlikely(se == NULL))
return gnutls_assert_val(GNUTLS_E_INVALID_REQUEST);
+ if (se->pk == GNUTLS_PK_ECDSA && !is_digest_algo_allowed_for_sign(se->hash)) {
+ _gnutls_switch_fips_state(GNUTLS_FIPS140_OP_ERROR);
+ return gnutls_assert_val(GNUTLS_E_UNWANTED_ALGORITHM);
+ } else if (se->pk == GNUTLS_PK_ECDSA && !is_digest_algo_approved_for_sign_in_fips(se->hash)) {
+ not_approved = true;
+ }
+
+ if (not_approved) {
+ _gnutls_switch_fips_state(GNUTLS_FIPS140_OP_NOT_APPROVED);
+ } else {
+ _gnutls_switch_fips_state(GNUTLS_FIPS140_OP_APPROVED);
+ }
+
if (_gnutls_pk_is_not_prehashed(se->pk)) {
return privkey_sign_raw_data(signer, se, data, signature, params);
}
Index: gnutls-3.7.7/tests/fips-test.c
===================================================================
--- gnutls-3.7.7.orig/tests/fips-test.c
+++ gnutls-3.7.7/tests/fips-test.c
@@ -38,6 +38,7 @@ static void tls_log_func(int level, cons
fprintf(stderr, "<%d>| %s", level, str);
}
+static uint8_t key13[13];
static uint8_t key16[16];
static uint8_t iv16[16];
uint8_t key_data[64];
@@ -269,6 +270,7 @@ void doit(void)
gnutls_pubkey_t pubkey;
gnutls_x509_privkey_t xprivkey;
gnutls_privkey_t privkey;
+ gnutls_datum_t key_invalid = { key13, sizeof(key13) };
gnutls_datum_t key = { key16, sizeof(key16) };
gnutls_datum_t iv = { iv16, sizeof(iv16) };
gnutls_datum_t signature;
@@ -309,6 +311,14 @@ void doit(void)
/* Try crypto.h functionality */
test_ciphers();
+ /* Try creating key with less than 112 bits: not approved */
+ FIPS_PUSH_CONTEXT();
+ ret = gnutls_key_generate(&key_invalid, 13);
+ if (ret < 0) {
+ fail("gnutls_generate_key failed\n");
+ }
+ FIPS_POP_CONTEXT(NOT_APPROVED);
+
FIPS_PUSH_CONTEXT();
ret = gnutls_cipher_init(&ch, GNUTLS_CIPHER_AES_128_CBC, &key, &iv);
if (ret < 0) {