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Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)

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This commit is contained in:
Dr. Stephen Henson 2012-01-04 15:27:54 +00:00
parent f47f99f295
commit 9004c53107
4 changed files with 18 additions and 1 deletions
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3
CHANGES
View File

@ -4,6 +4,9 @@
Changes between 1.0.0e and 1.0.0f [xx XXX xxxx]
*) Only allow one SGC handshake restart for SSL/TLS. (CVE-2011-4619)
[Adam Langley (Google)]
*) Check parameters are not NULL in GOST ENGINE. (CVE-2012-0027)
[Andrey Kulikov <amdeich@gmail.com>]

10
ssl/s3_srvr.c
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@ -258,6 +258,7 @@ int ssl3_accept(SSL *s)
}
s->init_num=0;
s->s3->flags &= ~SSL3_FLAGS_SGC_RESTART_DONE;
if (s->state != SSL_ST_RENEGOTIATE)
{
@ -755,6 +756,14 @@ int ssl3_check_client_hello(SSL *s)
int ok;
long n;
/* We only allow the client to restart the handshake once per
* negotiation. */
if (s->s3->flags & SSL3_FLAGS_SGC_RESTART_DONE)
{
SSLerr(SSL_F_SSL3_CHECK_CLIENT_HELLO, SSL_R_MULTIPLE_SGC_RESTARTS);
return -1;
}
/* this function is called when we really expect a Certificate message,
* so permit appropriate message length */
n=s->method->ssl_get_message(s,
@ -783,6 +792,7 @@ int ssl3_check_client_hello(SSL *s)
s->s3->tmp.ecdh = NULL;
}
#endif
s->s3->flags |= SSL3_FLAGS_SGC_RESTART_DONE;
return 2;
}
return 1;

2
ssl/ssl.h
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@ -1882,6 +1882,7 @@ void ERR_load_SSL_strings(void);
#define SSL_F_SSL3_CALLBACK_CTRL 233
#define SSL_F_SSL3_CHANGE_CIPHER_STATE 129
#define SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM 130
#define SSL_F_SSL3_CHECK_CLIENT_HELLO 304
#define SSL_F_SSL3_CLIENT_HELLO 131
#define SSL_F_SSL3_CONNECT 132
#define SSL_F_SSL3_CTRL 213
@ -2139,6 +2140,7 @@ void ERR_load_SSL_strings(void);
#define SSL_R_MISSING_TMP_RSA_KEY 172
#define SSL_R_MISSING_TMP_RSA_PKEY 173
#define SSL_R_MISSING_VERIFY_MESSAGE 174
#define SSL_R_MULTIPLE_SGC_RESTARTS 346
#define SSL_R_NON_SSLV2_INITIAL_PACKET 175
#define SSL_R_NO_CERTIFICATES_RETURNED 176
#define SSL_R_NO_CERTIFICATE_ASSIGNED 177

4
ssl/ssl_err.c
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@ -1,6 +1,6 @@
/* ssl/ssl_err.c */
/* ====================================================================
* Copyright (c) 1999-2009 The OpenSSL Project. All rights reserved.
* Copyright (c) 1999-2011 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -137,6 +137,7 @@ static ERR_STRING_DATA SSL_str_functs[]=
{ERR_FUNC(SSL_F_SSL3_CALLBACK_CTRL), "SSL3_CALLBACK_CTRL"},
{ERR_FUNC(SSL_F_SSL3_CHANGE_CIPHER_STATE), "SSL3_CHANGE_CIPHER_STATE"},
{ERR_FUNC(SSL_F_SSL3_CHECK_CERT_AND_ALGORITHM), "SSL3_CHECK_CERT_AND_ALGORITHM"},
{ERR_FUNC(SSL_F_SSL3_CHECK_CLIENT_HELLO), "SSL3_CHECK_CLIENT_HELLO"},
{ERR_FUNC(SSL_F_SSL3_CLIENT_HELLO), "SSL3_CLIENT_HELLO"},
{ERR_FUNC(SSL_F_SSL3_CONNECT), "SSL3_CONNECT"},
{ERR_FUNC(SSL_F_SSL3_CTRL), "SSL3_CTRL"},
@ -397,6 +398,7 @@ static ERR_STRING_DATA SSL_str_reasons[]=
{ERR_REASON(SSL_R_MISSING_TMP_RSA_KEY) ,"missing tmp rsa key"},
{ERR_REASON(SSL_R_MISSING_TMP_RSA_PKEY) ,"missing tmp rsa pkey"},
{ERR_REASON(SSL_R_MISSING_VERIFY_MESSAGE),"missing verify message"},
{ERR_REASON(SSL_R_MULTIPLE_SGC_RESTARTS) ,"multiple sgc restarts"},
{ERR_REASON(SSL_R_NON_SSLV2_INITIAL_PACKET),"non sslv2 initial packet"},
{ERR_REASON(SSL_R_NO_CERTIFICATES_RETURNED),"no certificates returned"},
{ERR_REASON(SSL_R_NO_CERTIFICATE_ASSIGNED),"no certificate assigned"},