diff options
Diffstat (limited to 'crypto/openssl/ssl/s3_both.c')
| -rw-r--r-- | crypto/openssl/ssl/s3_both.c | 41 |
1 files changed, 26 insertions, 15 deletions
diff --git a/crypto/openssl/ssl/s3_both.c b/crypto/openssl/ssl/s3_both.c index 09d0661..054ded1 100644 --- a/crypto/openssl/ssl/s3_both.c +++ b/crypto/openssl/ssl/s3_both.c @@ -356,21 +356,22 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) } *ok = 1; s->state = stn; - s->init_msg = s->init_buf->data + 4; + s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; s->init_num = (int)s->s3->tmp.message_size; return s->init_num; } p = (unsigned char *)s->init_buf->data; - if (s->state == st1) { /* s->init_num < 4 */ + if (s->state == st1) { /* s->init_num < SSL3_HM_HEADER_LENGTH */ int skip_message; do { - while (s->init_num < 4) { + while (s->init_num < SSL3_HM_HEADER_LENGTH) { i = s->method->ssl_read_bytes(s, SSL3_RT_HANDSHAKE, &p[s->init_num], - 4 - s->init_num, 0); + SSL3_HM_HEADER_LENGTH - + s->init_num, 0); if (i <= 0) { s->rwstate = SSL_READING; *ok = 0; @@ -394,12 +395,13 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) if (s->msg_callback) s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, - p, 4, s, s->msg_callback_arg); + p, SSL3_HM_HEADER_LENGTH, s, + s->msg_callback_arg); } } while (skip_message); - /* s->init_num == 4 */ + /* s->init_num == SSL3_HM_HEADER_LENGTH */ if ((mt >= 0) && (*p != mt)) { al = SSL_AD_UNEXPECTED_MESSAGE; @@ -415,19 +417,20 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE); goto f_err; } - if (l > (INT_MAX - 4)) { /* BUF_MEM_grow takes an 'int' parameter */ - al = SSL_AD_ILLEGAL_PARAMETER; - SSLerr(SSL_F_SSL3_GET_MESSAGE, SSL_R_EXCESSIVE_MESSAGE_SIZE); - goto f_err; - } - if (l && !BUF_MEM_grow_clean(s->init_buf, (int)l + 4)) { + /* + * Make buffer slightly larger than message length as a precaution + * against small OOB reads e.g. CVE-2016-6306 + */ + if (l + && !BUF_MEM_grow_clean(s->init_buf, + (int)l + SSL3_HM_HEADER_LENGTH + 16)) { SSLerr(SSL_F_SSL3_GET_MESSAGE, ERR_R_BUF_LIB); goto err; } s->s3->tmp.message_size = l; s->state = stn; - s->init_msg = s->init_buf->data + 4; + s->init_msg = s->init_buf->data + SSL3_HM_HEADER_LENGTH; s->init_num = 0; } @@ -456,10 +459,12 @@ long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok) #endif /* Feed this message into MAC computation. */ - ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, s->init_num + 4); + ssl3_finish_mac(s, (unsigned char *)s->init_buf->data, + s->init_num + SSL3_HM_HEADER_LENGTH); if (s->msg_callback) s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->init_buf->data, - (size_t)s->init_num + 4, s, s->msg_callback_arg); + (size_t)s->init_num + SSL3_HM_HEADER_LENGTH, s, + s->msg_callback_arg); *ok = 1; return s->init_num; f_err: @@ -535,6 +540,9 @@ int ssl_verify_alarm_type(long type) case X509_V_ERR_CRL_NOT_YET_VALID: case X509_V_ERR_CERT_UNTRUSTED: case X509_V_ERR_CERT_REJECTED: + case X509_V_ERR_HOSTNAME_MISMATCH: + case X509_V_ERR_EMAIL_MISMATCH: + case X509_V_ERR_IP_ADDRESS_MISMATCH: al = SSL_AD_BAD_CERTIFICATE; break; case X509_V_ERR_CERT_SIGNATURE_FAILURE: @@ -548,7 +556,10 @@ int ssl_verify_alarm_type(long type) case X509_V_ERR_CERT_REVOKED: al = SSL_AD_CERTIFICATE_REVOKED; break; + case X509_V_ERR_UNSPECIFIED: case X509_V_ERR_OUT_OF_MEM: + case X509_V_ERR_INVALID_CALL: + case X509_V_ERR_STORE_LOOKUP: al = SSL_AD_INTERNAL_ERROR; break; case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
