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Ensure all EVP calls have their returns checked where appropriate

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There are lots of calls to EVP functions from within libssl There were
various places where we should probably check the return value but don't.
This adds these checks.

Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Matt Caswell 2015-11-06 16:31:21 +00:00
parent 2cc7acd273
commit 5f3d93e4a3
13 changed files with 270 additions and 155 deletions
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3
include/openssl/ssl.h
View File

@ -1986,6 +1986,7 @@ void ERR_load_SSL_strings(void);
# define SSL_F_SSL3_DO_CHANGE_CIPHER_SPEC 292
# define SSL_F_SSL3_ENC 134
# define SSL_F_SSL3_GENERATE_KEY_BLOCK 238
# define SSL_F_SSL3_GENERATE_MASTER_SECRET 388
# define SSL_F_SSL3_GET_CERTIFICATE_REQUEST 135
# define SSL_F_SSL3_GET_CERT_STATUS 289
# define SSL_F_SSL3_GET_CERT_VERIFY 136
@ -2285,8 +2286,8 @@ void ERR_load_SSL_strings(void);
# define SSL_R_INVALID_TICKET_KEYS_LENGTH 325
# define SSL_R_INVALID_TRUST 279
# define SSL_R_LENGTH_MISMATCH 159
# define SSL_R_LENGTH_TOO_SHORT 160
# define SSL_R_LENGTH_TOO_LONG 404
# define SSL_R_LENGTH_TOO_SHORT 160
# define SSL_R_LIBRARY_BUG 274
# define SSL_R_LIBRARY_HAS_NO_CIPHERS 161
# define SSL_R_MISSING_DH_DSA_CERT 162

70
ssl/record/ssl3_record.c
View File

@ -846,33 +846,36 @@ int n_ssl3_mac(SSL *ssl, unsigned char *md, int send)
header[j++] = rec->length & 0xff;
/* Final param == is SSLv3 */
ssl3_cbc_digest_record(hash,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
mac_sec, md_size, 1);
if (ssl3_cbc_digest_record(hash,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
mac_sec, md_size, 1) <= 0)
return -1;
} else {
unsigned int md_size_u;
/* Chop the digest off the end :-) */
EVP_MD_CTX_init(&md_ctx);
EVP_MD_CTX_copy_ex(&md_ctx, hash);
EVP_DigestUpdate(&md_ctx, mac_sec, md_size);
EVP_DigestUpdate(&md_ctx, ssl3_pad_1, npad);
EVP_DigestUpdate(&md_ctx, seq, 8);
rec_char = rec->type;
EVP_DigestUpdate(&md_ctx, &rec_char, 1);
p = md;
s2n(rec->length, p);
EVP_DigestUpdate(&md_ctx, md, 2);
EVP_DigestUpdate(&md_ctx, rec->input, rec->length);
EVP_DigestFinal_ex(&md_ctx, md, NULL);
EVP_MD_CTX_copy_ex(&md_ctx, hash);
EVP_DigestUpdate(&md_ctx, mac_sec, md_size);
EVP_DigestUpdate(&md_ctx, ssl3_pad_2, npad);
EVP_DigestUpdate(&md_ctx, md, md_size);
EVP_DigestFinal_ex(&md_ctx, md, &md_size_u);
if (EVP_MD_CTX_copy_ex(&md_ctx, hash) <= 0
|| EVP_DigestUpdate(&md_ctx, mac_sec, md_size) <= 0
|| EVP_DigestUpdate(&md_ctx, ssl3_pad_1, npad) <= 0
|| EVP_DigestUpdate(&md_ctx, seq, 8) <= 0
|| EVP_DigestUpdate(&md_ctx, &rec_char, 1) <= 0
|| EVP_DigestUpdate(&md_ctx, md, 2) <= 0
|| EVP_DigestUpdate(&md_ctx, rec->input, rec->length) <= 0
|| EVP_DigestFinal_ex(&md_ctx, md, NULL) <= 0
|| EVP_MD_CTX_copy_ex(&md_ctx, hash) <= 0
|| EVP_DigestUpdate(&md_ctx, mac_sec, md_size) <= 0
|| EVP_DigestUpdate(&md_ctx, ssl3_pad_2, npad) <= 0
|| EVP_DigestUpdate(&md_ctx, md, md_size) <= 0
|| EVP_DigestFinal_ex(&md_ctx, md, &md_size_u) <= 0) {
EVP_MD_CTX_cleanup(&md_ctx);
return -1;
}
md_size = md_size_u;
EVP_MD_CTX_cleanup(&md_ctx);
@ -944,18 +947,24 @@ int tls1_mac(SSL *ssl, unsigned char *md, int send)
* are hashing because that gives an attacker a timing-oracle.
*/
/* Final param == not SSLv3 */
ssl3_cbc_digest_record(mac_ctx,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
ssl->s3->read_mac_secret,
ssl->s3->read_mac_secret_size, 0);
} else {
EVP_DigestSignUpdate(mac_ctx, header, sizeof(header));
EVP_DigestSignUpdate(mac_ctx, rec->input, rec->length);
t = EVP_DigestSignFinal(mac_ctx, md, &md_size);
if (t <= 0)
if (ssl3_cbc_digest_record(mac_ctx,
md, &md_size,
header, rec->input,
rec->length + md_size, rec->orig_len,
ssl->s3->read_mac_secret,
ssl->s3->read_mac_secret_size, 0) <= 0) {
if (!stream_mac)
EVP_MD_CTX_cleanup(&hmac);
return -1;
}
} else {
if (EVP_DigestSignUpdate(mac_ctx, header, sizeof(header)) <= 0
|| EVP_DigestSignUpdate(mac_ctx, rec->input, rec->length) <= 0
|| EVP_DigestSignFinal(mac_ctx, md, &md_size) <= 0) {
if (!stream_mac)
EVP_MD_CTX_cleanup(&hmac);
return -1;
}
if (!send && !SSL_USE_ETM(ssl) && FIPS_mode())
tls_fips_digest_extra(ssl->enc_read_ctx,
mac_ctx, rec->input,
@ -964,6 +973,7 @@ int tls1_mac(SSL *ssl, unsigned char *md, int send)
if (!stream_mac)
EVP_MD_CTX_cleanup(&hmac);
#ifdef TLS_DEBUG
fprintf(stderr, "seq=");
{

45
ssl/s3_cbc.c
View File

@ -172,8 +172,9 @@ char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx)
* functions, above, we know that data_plus_mac_size is large enough to contain
* a padding byte and MAC. (If the padding was invalid, it might contain the
* padding too. )
* Returns 1 on success or 0 on error
*/
void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
unsigned char *md_out,
size_t *md_out_size,
const unsigned char header[13],
@ -217,7 +218,8 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
switch (EVP_MD_CTX_type(ctx)) {
case NID_md5:
MD5_Init((MD5_CTX *)md_state.c);
if (MD5_Init((MD5_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_md5_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))MD5_Transform;
@ -226,28 +228,32 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
length_is_big_endian = 0;
break;
case NID_sha1:
SHA1_Init((SHA_CTX *)md_state.c);
if (SHA1_Init((SHA_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_sha1_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))SHA1_Transform;
md_size = 20;
break;
case NID_sha224:
SHA224_Init((SHA256_CTX *)md_state.c);
if (SHA224_Init((SHA256_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_sha256_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))SHA256_Transform;
md_size = 224 / 8;
break;
case NID_sha256:
SHA256_Init((SHA256_CTX *)md_state.c);
if (SHA256_Init((SHA256_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_sha256_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))SHA256_Transform;
md_size = 32;
break;
case NID_sha384:
SHA384_Init((SHA512_CTX *)md_state.c);
if (SHA384_Init((SHA512_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_sha512_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))SHA512_Transform;
@ -256,7 +262,8 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
md_length_size = 16;
break;
case NID_sha512:
SHA512_Init((SHA512_CTX *)md_state.c);
if (SHA512_Init((SHA512_CTX *)md_state.c) <= 0)
return 0;
md_final_raw = tls1_sha512_final_raw;
md_transform =
(void (*)(void *ctx, const unsigned char *block))SHA512_Transform;
@ -272,7 +279,7 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
OPENSSL_assert(0);
if (md_out_size)
*md_out_size = -1;
return;
return 0;
}
OPENSSL_assert(md_length_size <= MAX_HASH_BIT_COUNT_BYTES);
@ -410,7 +417,7 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
*/
if (header_length <= md_block_size) {
/* Should never happen */
return;
return 0;
}
overhang = header_length - md_block_size;
md_transform(md_state.c, header);
@ -491,26 +498,34 @@ void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
}
EVP_MD_CTX_init(&md_ctx);
EVP_DigestInit_ex(&md_ctx, ctx->digest, NULL /* engine */ );
if (EVP_DigestInit_ex(&md_ctx, ctx->digest, NULL /* engine */ ) <= 0)
goto err;
if (is_sslv3) {
/* We repurpose |hmac_pad| to contain the SSLv3 pad2 block. */
memset(hmac_pad, 0x5c, sslv3_pad_length);
EVP_DigestUpdate(&md_ctx, mac_secret, mac_secret_length);
EVP_DigestUpdate(&md_ctx, hmac_pad, sslv3_pad_length);
EVP_DigestUpdate(&md_ctx, mac_out, md_size);
if (EVP_DigestUpdate(&md_ctx, mac_secret, mac_secret_length) <= 0
|| EVP_DigestUpdate(&md_ctx, hmac_pad, sslv3_pad_length) <= 0
|| EVP_DigestUpdate(&md_ctx, mac_out, md_size) <= 0)
goto err;
} else {
/* Complete the HMAC in the standard manner. */
for (i = 0; i < md_block_size; i++)
hmac_pad[i] ^= 0x6a;
EVP_DigestUpdate(&md_ctx, hmac_pad, md_block_size);
EVP_DigestUpdate(&md_ctx, mac_out, md_size);
if (EVP_DigestUpdate(&md_ctx, hmac_pad, md_block_size) <= 0
|| EVP_DigestUpdate(&md_ctx, mac_out, md_size) <= 0)
goto err;
}
ret = EVP_DigestFinal(&md_ctx, md_out, &md_out_size_u);
if (ret && md_out_size)
*md_out_size = md_out_size_u;
EVP_MD_CTX_cleanup(&md_ctx);
return 1;
err:
EVP_MD_CTX_cleanup(&md_ctx);
return 0;
}
/*

59
ssl/s3_enc.c
View File

@ -253,7 +253,7 @@ int ssl3_change_cipher_state(SSL *s, int which)
EVP_CIPHER_CTX_init(s->enc_read_ctx);
dd = s->enc_read_ctx;
if (!ssl_replace_hash(&s->read_hash, m)) {
if (ssl_replace_hash(&s->read_hash, m) == NULL) {
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
goto err2;
}
@ -286,7 +286,7 @@ int ssl3_change_cipher_state(SSL *s, int which)
*/
EVP_CIPHER_CTX_init(s->enc_write_ctx);
dd = s->enc_write_ctx;
if (!ssl_replace_hash(&s->write_hash, m)) {
if (ssl_replace_hash(&s->write_hash, m) == NULL) {
SSLerr(SSL_F_SSL3_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
goto err2;
}
@ -617,19 +617,21 @@ static int ssl3_handshake_mac(SSL *s, int md_nid,
return 0;
npad = (48 / n) * n;
if (sender != NULL)
EVP_DigestUpdate(&ctx, sender, len);
EVP_DigestUpdate(&ctx, s->session->master_key,
s->session->master_key_length);
EVP_DigestUpdate(&ctx, ssl3_pad_1, npad);
EVP_DigestFinal_ex(&ctx, md_buf, &i);
if ((sender != NULL && EVP_DigestUpdate(&ctx, sender, len) <= 0)
|| EVP_DigestUpdate(&ctx, s->session->master_key,
s->session->master_key_length) <= 0
|| EVP_DigestUpdate(&ctx, ssl3_pad_1, npad) <= 0
|| EVP_DigestFinal_ex(&ctx, md_buf, &i) <= 0
EVP_DigestInit_ex(&ctx, EVP_MD_CTX_md(&ctx), NULL);
EVP_DigestUpdate(&ctx, s->session->master_key,
s->session->master_key_length);
EVP_DigestUpdate(&ctx, ssl3_pad_2, npad);
EVP_DigestUpdate(&ctx, md_buf, i);
EVP_DigestFinal_ex(&ctx, p, &ret);
|| EVP_DigestInit_ex(&ctx, EVP_MD_CTX_md(&ctx), NULL) <= 0
|| EVP_DigestUpdate(&ctx, s->session->master_key,
s->session->master_key_length) <= 0
|| EVP_DigestUpdate(&ctx, ssl3_pad_2, npad) <= 0
|| EVP_DigestUpdate(&ctx, md_buf, i) <= 0
|| EVP_DigestFinal_ex(&ctx, p, &ret) <= 0) {
SSLerr(SSL_F_SSL3_HANDSHAKE_MAC, ERR_R_INTERNAL_ERROR);
ret = 0;
}
EVP_MD_CTX_cleanup(&ctx);
@ -660,24 +662,31 @@ int ssl3_generate_master_secret(SSL *s, unsigned char *out, unsigned char *p,
EVP_MD_CTX_init(&ctx);
for (i = 0; i < 3; i++) {
EVP_DigestInit_ex(&ctx, s->ctx->sha1, NULL);
EVP_DigestUpdate(&ctx, salt[i], strlen((const char *)salt[i]));
EVP_DigestUpdate(&ctx, p, len);
EVP_DigestUpdate(&ctx, &(s->s3->client_random[0]), SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&ctx, &(s->s3->server_random[0]), SSL3_RANDOM_SIZE);
EVP_DigestFinal_ex(&ctx, buf, &n);
if (EVP_DigestInit_ex(&ctx, s->ctx->sha1, NULL) <= 0
|| EVP_DigestUpdate(&ctx, salt[i],
strlen((const char *)salt[i])) <= 0
|| EVP_DigestUpdate(&ctx, p, len) <= 0
|| EVP_DigestUpdate(&ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(&ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestFinal_ex(&ctx, buf, &n) <= 0
EVP_DigestInit_ex(&ctx, s->ctx->md5, NULL);
EVP_DigestUpdate(&ctx, p, len);
EVP_DigestUpdate(&ctx, buf, n);
EVP_DigestFinal_ex(&ctx, out, &n);
|| EVP_DigestInit_ex(&ctx, s->ctx->md5, NULL) <= 0
|| EVP_DigestUpdate(&ctx, p, len) <= 0
|| EVP_DigestUpdate(&ctx, buf, n) <= 0
|| EVP_DigestFinal_ex(&ctx, out, &n) <= 0) {
SSLerr(SSL_F_SSL3_GENERATE_MASTER_SECRET, ERR_R_INTERNAL_ERROR);
ret = 0;
break;
}
out += n;
ret += n;
}
EVP_MD_CTX_cleanup(&ctx);
#ifdef OPENSSL_SSL_TRACE_CRYPTO
if (s->msg_callback) {
if (ret > 0 && s->msg_callback) {
s->msg_callback(2, s->version, TLS1_RT_CRYPTO_PREMASTER,
p, len, s, s->msg_callback_arg);
s->msg_callback(2, s->version, TLS1_RT_CRYPTO_CLIENT_RANDOM,

11
ssl/ssl_ciph.c
View File

@ -439,10 +439,11 @@ static int get_optional_pkey_id(const char *pkey_name)
const EVP_PKEY_ASN1_METHOD *ameth;
int pkey_id = 0;
ameth = EVP_PKEY_asn1_find_str(NULL, pkey_name, -1);
if (ameth) {
EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
if (ameth && EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
ameth) > 0) {
return pkey_id;
}
return pkey_id;
return 0;
}
#else
@ -454,7 +455,9 @@ static int get_optional_pkey_id(const char *pkey_name)
int pkey_id = 0;
ameth = EVP_PKEY_asn1_find_str(&tmpeng, pkey_name, -1);
if (ameth) {
EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL, ameth);
if (EVP_PKEY_asn1_get0_info(&pkey_id, NULL, NULL, NULL, NULL,
ameth) <= 0)
pkey_id = 0;
}
if (tmpeng)
ENGINE_finish(tmpeng);

2
ssl/ssl_err.c
View File

@ -140,6 +140,8 @@ static ERR_STRING_DATA SSL_str_functs[] = {
"ssl3_do_change_cipher_spec"},
{ERR_FUNC(SSL_F_SSL3_ENC), "ssl3_enc"},
{ERR_FUNC(SSL_F_SSL3_GENERATE_KEY_BLOCK), "ssl3_generate_key_block"},
{ERR_FUNC(SSL_F_SSL3_GENERATE_MASTER_SECRET),
"ssl3_generate_master_secret"},
{ERR_FUNC(SSL_F_SSL3_GET_CERTIFICATE_REQUEST),
"ssl3_get_certificate_request"},
{ERR_FUNC(SSL_F_SSL3_GET_CERT_STATUS), "ssl3_get_cert_status"},

7
ssl/ssl_lib.c
View File

@ -3165,8 +3165,11 @@ EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
{
ssl_clear_hash_ctx(hash);
*hash = EVP_MD_CTX_create();
if (md)
EVP_DigestInit_ex(*hash, md, NULL);
if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
EVP_MD_CTX_destroy(*hash);
*hash = NULL;
return NULL;
}
return *hash;
}

18
ssl/ssl_locl.h
View File

@ -2114,15 +2114,15 @@ __owur int ssl_handshake_hash(SSL *s, unsigned char *out, int outlen);
/* s3_cbc.c */
__owur char ssl3_cbc_record_digest_supported(const EVP_MD_CTX *ctx);
void ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
unsigned char *md_out,
size_t *md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
unsigned mac_secret_length, char is_sslv3);
__owur int ssl3_cbc_digest_record(const EVP_MD_CTX *ctx,
unsigned char *md_out,
size_t *md_out_size,
const unsigned char header[13],
const unsigned char *data,
size_t data_plus_mac_size,
size_t data_plus_mac_plus_padding_size,
const unsigned char *mac_secret,
unsigned mac_secret_length, char is_sslv3);
void tls_fips_digest_extra(const EVP_CIPHER_CTX *cipher_ctx,
EVP_MD_CTX *mac_ctx, const unsigned char *data,

23
ssl/ssl_rsa.c
View File

@ -157,7 +157,10 @@ int SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa)
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey, rsa);
if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) {
RSA_free(rsa);
return 0;
}
ret = ssl_set_pkey(ssl->cert, pkey);
EVP_PKEY_free(pkey);
@ -192,6 +195,15 @@ static int ssl_set_pkey(CERT *c, EVP_PKEY *pkey)
if (c->pkeys[i].x509 != NULL) {
EVP_PKEY *pktmp;
pktmp = X509_get_pubkey(c->pkeys[i].x509);
if (pktmp == NULL) {
SSLerr(SSL_F_SSL_SET_PKEY, ERR_R_MALLOC_FAILURE);
EVP_PKEY_free(pktmp);
return 0;
}
/*
* The return code from EVP_PKEY_copy_parameters is deliberately
* ignored. Some EVP_PKEY types cannot do this.
*/
EVP_PKEY_copy_parameters(pktmp, pkey);
EVP_PKEY_free(pktmp);
ERR_clear_error();
@ -386,6 +398,10 @@ static int ssl_set_cert(CERT *c, X509 *x)
}
if (c->pkeys[i].privatekey != NULL) {
/*
* The return code from EVP_PKEY_copy_parameters is deliberately
* ignored. Some EVP_PKEY types cannot do this.
*/
EVP_PKEY_copy_parameters(pkey, c->pkeys[i].privatekey);
ERR_clear_error();
@ -498,7 +514,10 @@ int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa)
}
RSA_up_ref(rsa);
EVP_PKEY_assign_RSA(pkey, rsa);
if (EVP_PKEY_assign_RSA(pkey, rsa) <= 0) {
RSA_free(rsa);
return 0;
}
ret = ssl_set_pkey(ctx->cert, pkey);
EVP_PKEY_free(pkey);

78
ssl/statem/statem_clnt.c
View File

@ -1961,15 +1961,21 @@ MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt)
q = md_buf;
for (num = 2; num > 0; num--) {
EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
EVP_DigestInit_ex(&md_ctx, (num == 2)
? s->ctx->md5 : s->ctx->sha1, NULL);
EVP_DigestUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&md_ctx, PACKET_data(&params),
PACKET_remaining(&params));
EVP_DigestFinal_ex(&md_ctx, q, &size);
if (EVP_DigestInit_ex(&md_ctx,
(num == 2) ? s->ctx->md5 : s->ctx->sha1,
NULL) <= 0
|| EVP_DigestUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(&md_ctx, PACKET_data(&params),
PACKET_remaining(&params)) <= 0
|| EVP_DigestFinal_ex(&md_ctx, q, &size) <= 0) {
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
q += size;
j += size;
}
@ -1990,13 +1996,17 @@ MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s, PACKET *pkt)
} else
#endif
{
EVP_VerifyInit_ex(&md_ctx, md, NULL);
EVP_VerifyUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE);
EVP_VerifyUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
EVP_VerifyUpdate(&md_ctx, PACKET_data(&params),
PACKET_remaining(&params));
if (EVP_VerifyInit_ex(&md_ctx, md, NULL) <= 0
|| EVP_VerifyUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_VerifyUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_VerifyUpdate(&md_ctx, PACKET_data(&params),
PACKET_remaining(&params)) <= 0) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_KEY_EXCHANGE, ERR_R_EVP_LIB);
goto f_err;
}
if (EVP_VerifyFinal(&md_ctx, PACKET_data(&signature),
PACKET_remaining(&signature), pkey) <= 0) {
/* bad signature */
@ -2786,16 +2796,16 @@ psk_err:
}
/*
* If we have send a certificate, and certificate key
*
* * parameters match those of server certificate, use
* parameters match those of server certificate, use
* certificate key for key exchange
*/
/* Otherwise, generate ephemeral key pair */
EVP_PKEY_encrypt_init(pkey_ctx);
/* Generate session key */
if (RAND_bytes(pms, pmslen) <= 0) {
if (pkey_ctx == NULL
|| EVP_PKEY_encrypt_init(pkey_ctx) <= 0
/* Generate session key */
|| RAND_bytes(pms, pmslen) <= 0) {
EVP_PKEY_CTX_free(pkey_ctx);
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
@ -2819,13 +2829,18 @@ psk_err:
* data
*/
ukm_hash = EVP_MD_CTX_create();
EVP_DigestInit(ukm_hash,
EVP_get_digestbynid(NID_id_GostR3411_94));
EVP_DigestUpdate(ukm_hash, s->s3->client_random,
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(ukm_hash, s->s3->server_random,
SSL3_RANDOM_SIZE);
EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len);
if (EVP_DigestInit(ukm_hash,
EVP_get_digestbynid(NID_id_GostR3411_94)) <= 0
|| EVP_DigestUpdate(ukm_hash, s->s3->client_random,
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(ukm_hash, s->s3->server_random,
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestFinal_ex(ukm_hash, shared_ukm, &md_len) <= 0) {
EVP_MD_CTX_destroy(ukm_hash);
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
ERR_R_INTERNAL_ERROR);
goto err;
}
EVP_MD_CTX_destroy(ukm_hash);
if (EVP_PKEY_CTX_ctrl
(pkey_ctx, -1, EVP_PKEY_OP_ENCRYPT, EVP_PKEY_CTRL_SET_IV, 8,
@ -2840,7 +2855,7 @@ psk_err:
*/
*(p++) = V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED;
msglen = 255;
if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) < 0) {
if (EVP_PKEY_encrypt(pkey_ctx, tmp, &msglen, pms, pmslen) <= 0) {
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_KEY_EXCHANGE,
SSL_R_LIBRARY_BUG);
goto err;
@ -3006,7 +3021,10 @@ int tls_construct_client_verify(SSL *s)
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_MALLOC_FAILURE);
goto err;
}
EVP_PKEY_sign_init(pctx);
if (EVP_PKEY_sign_init(pctx) <= 0) {
SSLerr(SSL_F_TLS_CONSTRUCT_CLIENT_VERIFY, ERR_R_INTERNAL_ERROR);
goto err;
}
if (EVP_PKEY_CTX_set_signature_md(pctx, EVP_sha1()) > 0) {
if (!SSL_USE_SIGALGS(s))
s->method->ssl3_enc->cert_verify_mac(s,

60
ssl/statem/statem_srvr.c
View File

@ -2109,14 +2109,20 @@ int tls_construct_server_key_exchange(SSL *s)
for (num = 2; num > 0; num--) {
EVP_MD_CTX_set_flags(&md_ctx,
EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
EVP_DigestInit_ex(&md_ctx, (num == 2)
? s->ctx->md5 : s->ctx->sha1, NULL);
EVP_DigestUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
EVP_DigestUpdate(&md_ctx, d, n);
EVP_DigestFinal_ex(&md_ctx, q, (unsigned int *)&i);
if (EVP_DigestInit_ex(&md_ctx, (num == 2)
? s->ctx->md5 : s->ctx->sha1, NULL) <= 0
|| EVP_DigestUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_DigestUpdate(&md_ctx, d, n) <= 0
|| EVP_DigestFinal_ex(&md_ctx, q,
(unsigned int *)&i) <= 0) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE,
ERR_LIB_EVP);
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
q += i;
j += i;
}
@ -2144,16 +2150,17 @@ int tls_construct_server_key_exchange(SSL *s)
#ifdef SSL_DEBUG
fprintf(stderr, "Using hash %s\n", EVP_MD_name(md));
#endif
EVP_SignInit_ex(&md_ctx, md, NULL);
EVP_SignUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE);
EVP_SignUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE);
EVP_SignUpdate(&md_ctx, d, n);
if (!EVP_SignFinal(&md_ctx, &(p[2]),
(unsigned int *)&i, pkey)) {
if (EVP_SignInit_ex(&md_ctx, md, NULL) <= 0
|| EVP_SignUpdate(&md_ctx, &(s->s3->client_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_SignUpdate(&md_ctx, &(s->s3->server_random[0]),
SSL3_RANDOM_SIZE) <= 0
|| EVP_SignUpdate(&md_ctx, d, n) <= 0
|| EVP_SignFinal(&md_ctx, &(p[2]),
(unsigned int *)&i, pkey) <= 0) {
SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_EXCHANGE, ERR_LIB_EVP);
goto err;
al = SSL_AD_INTERNAL_ERROR;
goto f_err;
}
s2n(i, p);
n += i + 2;
@ -2812,7 +2819,11 @@ MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_MALLOC_FAILURE);
goto f_err;
}
EVP_PKEY_decrypt_init(pkey_ctx);
if (EVP_PKEY_decrypt_init(pkey_ctx) <= 0) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
goto f_err;
}
/*
* If client certificate is present and is of the same type, maybe
* use it for key exchange. Don't mind errors from
@ -2829,12 +2840,13 @@ MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
if (!PACKET_get_bytes(pkt, &data, sess_key_len)) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
goto f_err;
goto gerr;
}
if (ASN1_get_object ((const unsigned char **)&data, &Tlen, &Ttag,
&Tclass, sess_key_len) != V_ASN1_CONSTRUCTED
|| Ttag != V_ASN1_SEQUENCE
|| Tclass != V_ASN1_UNIVERSAL) {
al = SSL_AD_DECODE_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE,
SSL_R_DECRYPTION_FAILED);
goto gerr;
@ -2852,7 +2864,7 @@ MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
sizeof(premaster_secret), 0)) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
goto f_err;
goto gerr;
}
/* Check if pubkey from client certificate was used */
if (EVP_PKEY_CTX_ctrl
@ -2865,7 +2877,7 @@ MSG_PROCESS_RETURN tls_process_client_key_exchange(SSL *s, PACKET *pkt)
gerr:
EVP_PKEY_free(client_pub_pkey);
EVP_PKEY_CTX_free(pkey_ctx);
goto err;
goto f_err;
} else {
al = SSL_AD_HANDSHAKE_FAILURE;
SSLerr(SSL_F_TLS_PROCESS_CLIENT_KEY_EXCHANGE, SSL_R_UNKNOWN_CIPHER_TYPE);
@ -3150,7 +3162,11 @@ MSG_PROCESS_RETURN tls_process_cert_verify(SSL *s, PACKET *pkt)
SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_MALLOC_FAILURE);
goto f_err;
}
EVP_PKEY_verify_init(pctx);
if (EVP_PKEY_verify_init(pctx) <= 0) {
al = SSL_AD_INTERNAL_ERROR;
SSLerr(SSL_F_TLS_PROCESS_CERT_VERIFY, ERR_R_INTERNAL_ERROR);
goto f_err;
}
if (len != 64) {
fprintf(stderr, "GOST signature length is %d", len);
}

21
ssl/t1_enc.c
View File

@ -353,6 +353,8 @@ int tls1_change_cipher_state(SSL *s, int which)
EVP_CIPHER_CTX_init(s->enc_read_ctx);
dd = s->enc_read_ctx;
mac_ctx = ssl_replace_hash(&s->read_hash, NULL);
if (mac_ctx == NULL)
goto err;
#ifndef OPENSSL_NO_COMP
COMP_CTX_free(s->expand);
s->expand = NULL;
@ -386,11 +388,14 @@ int tls1_change_cipher_state(SSL *s, int which)
dd = s->enc_write_ctx;
if (SSL_IS_DTLS(s)) {
mac_ctx = EVP_MD_CTX_create();
if (!mac_ctx)
if (mac_ctx == NULL)
goto err;
s->write_hash = mac_ctx;
} else
} else {
mac_ctx = ssl_replace_hash(&s->write_hash, NULL);
if (mac_ctx == NULL)
goto err;
}
#ifndef OPENSSL_NO_COMP
COMP_CTX_free(s->compress);
s->compress = NULL;
@ -463,7 +468,12 @@ int tls1_change_cipher_state(SSL *s, int which)
if (!(EVP_CIPHER_flags(c) & EVP_CIPH_FLAG_AEAD_CIPHER)) {
mac_key = EVP_PKEY_new_mac_key(mac_type, NULL,
mac_secret, *mac_secret_size);
EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key);
if (mac_key == NULL
|| EVP_DigestSignInit(mac_ctx, NULL, m, NULL, mac_key) <= 0) {
EVP_PKEY_free(mac_key);
SSLerr(SSL_F_TLS1_CHANGE_CIPHER_STATE, ERR_R_INTERNAL_ERROR);
goto err2;
}
EVP_PKEY_free(mac_key);
}
#ifdef TLS_DEBUG
@ -711,8 +721,9 @@ int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *out)
}
EVP_MD_CTX_init(&ctx);
EVP_MD_CTX_copy_ex(&ctx, d);
EVP_DigestFinal_ex(&ctx, out, &ret);
if (EVP_MD_CTX_copy_ex(&ctx, d) <=0
|| EVP_DigestFinal_ex(&ctx, out, &ret) <= 0)
ret = 0;
EVP_MD_CTX_cleanup(&ctx);
return ((int)ret);
}

28
ssl/t1_lib.c
View File

@ -3079,10 +3079,13 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick,
/* Check key name matches */
if (memcmp(etick, tctx->tlsext_tick_key_name, 16))
return 2;
HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
EVP_sha256(), NULL);
EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
tctx->tlsext_tick_aes_key, etick + 16);
if (HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
EVP_sha256(), NULL) <= 0
|| EVP_DecryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
tctx->tlsext_tick_aes_key,
etick + 16) <= 0) {
goto err;
}
}
/*
* Attempt to process session ticket, first conduct sanity and integrity
@ -3090,13 +3093,14 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick,
*/
mlen = HMAC_size(&hctx);
if (mlen < 0) {
EVP_CIPHER_CTX_cleanup(&ctx);
return -1;
goto err;
}
eticklen -= mlen;
/* Check HMAC of encrypted ticket */
HMAC_Update(&hctx, etick, eticklen);
HMAC_Final(&hctx, tick_hmac, NULL);
if (HMAC_Update(&hctx, etick, eticklen) <= 0
|| HMAC_Final(&hctx, tick_hmac, NULL) <= 0) {
goto err;
}
HMAC_CTX_cleanup(&hctx);
if (CRYPTO_memcmp(tick_hmac, etick + eticklen, mlen)) {
EVP_CIPHER_CTX_cleanup(&ctx);
@ -3107,11 +3111,11 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick,
p = etick + 16 + EVP_CIPHER_CTX_iv_length(&ctx);
eticklen -= 16 + EVP_CIPHER_CTX_iv_length(&ctx);
sdec = OPENSSL_malloc(eticklen);
if (sdec == NULL) {
if (sdec == NULL
|| EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen) <= 0) {
EVP_CIPHER_CTX_cleanup(&ctx);
return -1;
}
EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen);
if (EVP_DecryptFinal(&ctx, sdec + slen, &mlen) <= 0) {
EVP_CIPHER_CTX_cleanup(&ctx);
OPENSSL_free(sdec);
@ -3144,6 +3148,10 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick,
* For session parse failure, indicate that we need to send a new ticket.
*/
return 2;
err:
EVP_CIPHER_CTX_cleanup(&ctx);
HMAC_CTX_cleanup(&hctx);
return -1;
}
/* Tables to translate from NIDs to TLS v1.2 ids */