update NEWS

9 files changed, 115 insertions, 25 deletions

diff --git a/NEWS b/NEWS
index a46361198d..e70fcba092 100644
--- a/NEWS
+++ b/NEWS
@@ -5,6 +5,12 @@
   This file gives a brief overview of the major changes between each OpenSSL
   release. For more details please read the CHANGES file.
 
+  Major changes between OpenSSL 1.0.1 and OpenSSL 1.0.1a:
+
+      o Fix for ASN1 overflow bug CVE-2012-2110
+      o Workarounds for some servers that hang on long client hellos.
+      o Fix SEGV in AES code.
+
   Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.1:
 
       o TLS/DTLS heartbeat support.
@@ -18,6 +24,10 @@
       o Preliminary FIPS capability for unvalidated 2.0 FIPS module.
       o SRP support.
 
+  Major changes between OpenSSL 1.0.0h and OpenSSL 1.0.0i:
+
+      o Fix for ASN1 overflow bug CVE-2012-2110
+
   Major changes between OpenSSL 1.0.0g and OpenSSL 1.0.0h:
 
       o Fix for CMS/PKCS#7 MMA CVE-2012-0884
@@ -90,6 +100,14 @@
       o Opaque PRF Input TLS extension support.
       o Updated time routines to avoid OS limitations.
 
+  Major changes between OpenSSL 0.9.8v and OpenSSL 0.9.8w:
+
+      o Fix for CVE-2012-2131 (corrected fix for 0.9.8 and CVE-2012-2110)
+
+  Major changes between OpenSSL 0.9.8u and OpenSSL 0.9.8v:
+
+      o Fix for ASN1 overflow bug CVE-2012-2110
+
   Major changes between OpenSSL 0.9.8t and OpenSSL 0.9.8u:
 
       o Fix for CMS/PKCS#7 MMA CVE-2012-0884
diff --git a/apps/s_cb.c b/apps/s_cb.c
index b21a4283df..0c5c39e4f0 100644
--- a/apps/s_cb.c
+++ b/apps/s_cb.c
@@ -285,6 +285,19 @@ int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
 	return 1;
 	}
 
+typedef struct 
+	{
+	X509 *cert;
+	EVP_PKEY *key;
+	STACK_OF(X509) *chain;
+	struct ssl_excert_st *next;
+	} SSL_EXCERT;
+
+static int set_cert_cb(SSL *ssl, void *arg)
+	{
+	return 1;
+	}
+
 int ssl_print_sigalgs(BIO *out, SSL *s)
 	{
 	int i, nsig;
diff --git a/ssl/s3_clnt.c b/ssl/s3_clnt.c
index ee8aeb05f8..3e6a9d4d4c 100644
--- a/ssl/s3_clnt.c
+++ b/ssl/s3_clnt.c
@@ -3161,6 +3161,13 @@ int ssl3_send_client_certificate(SSL *s)
 
 	if (s->state ==	SSL3_ST_CW_CERT_A)
 		{
+		/* Let cert callback update client certificates if required */
+		if (s->cert->cert_cb
+			&& s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
+			{
+			ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_INTERNAL_ERROR);
+			return 0;
+			}
 		if (ssl3_check_client_certificate(s))
 			s->state=SSL3_ST_CW_CERT_C;
 		else
diff --git a/ssl/s3_srvr.c b/ssl/s3_srvr.c
index 87678c181b..68920a72db 100644
--- a/ssl/s3_srvr.c
+++ b/ssl/s3_srvr.c
@@ -1341,6 +1341,14 @@ int ssl3_get_client_hello(SSL *s)
 			SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_NO_CIPHERS_PASSED);
 			goto f_err;
 			}
+		/* Let cert callback update server certificates if required */
+		if (s->cert->cert_cb
+			&& s->cert->cert_cb(s, s->cert->cert_cb_arg) <= 0)
+			{
+			al=SSL_AD_INTERNAL_ERROR;
+			SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO,SSL_R_CERT_CB_ERROR);
+			goto f_err;
+			}
 		ciphers=NULL;
 		c=ssl3_choose_cipher(s,s->session->ciphers,
 				     SSL_get_ciphers(s));
diff --git a/ssl/ssl.h b/ssl/ssl.h
index 708dc33d6b..23e79eaaae 100644
--- a/ssl/ssl.h
+++ b/ssl/ssl.h
@@ -1759,6 +1759,7 @@ int	(*SSL_get_verify_callback(const SSL *s))(int,X509_STORE_CTX *);
 void	SSL_set_verify(SSL *s, int mode,
 		       int (*callback)(int ok,X509_STORE_CTX *ctx));
 void	SSL_set_verify_depth(SSL *s, int depth);
+void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg);
 #ifndef OPENSSL_NO_RSA
 int	SSL_use_RSAPrivateKey(SSL *ssl, RSA *rsa);
 #endif
@@ -1837,6 +1838,7 @@ void SSL_CTX_set_verify(SSL_CTX *ctx,int mode,
 			int (*callback)(int, X509_STORE_CTX *));
 void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth);
 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx, int (*cb)(X509_STORE_CTX *,void *), void *arg);
+void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg);
 #ifndef OPENSSL_NO_RSA
 int SSL_CTX_use_RSAPrivateKey(SSL_CTX *ctx, RSA *rsa);
 #endif
@@ -1892,6 +1894,7 @@ char *SSL_get_srp_username(SSL *s);
 char *SSL_get_srp_userinfo(SSL *s);
 #endif
 
+void	SSL_certs_clear(SSL *s);
 void	SSL_free(SSL *ssl);
 int 	SSL_accept(SSL *ssl);
 int 	SSL_connect(SSL *ssl);
@@ -2387,6 +2390,7 @@ void ERR_load_SSL_strings(void);
 #define SSL_R_CA_DN_TOO_LONG				 132
 #define SSL_R_CCS_RECEIVED_EARLY			 133
 #define SSL_R_CERTIFICATE_VERIFY_FAILED			 134
+#define SSL_R_CERT_CB_ERROR				 371
 #define SSL_R_CERT_LENGTH_MISMATCH			 135
 #define SSL_R_CHALLENGE_IS_DIFFERENT			 136
 #define SSL_R_CIPHER_CODE_WRONG_LENGTH			 137
diff --git a/ssl/ssl_cert.c b/ssl/ssl_cert.c
index 222f703284..784300e26a 100644
--- a/ssl/ssl_cert.c
+++ b/ssl/ssl_cert.c
@@ -345,6 +345,9 @@ CERT *ssl_cert_dup(CERT *cert)
 	ret->sigalgs = NULL;
 	ret->sigalgslen = 0;
 
+	ret->cert_cb = cert->cert_cb;
+	ret->cert_cb_arg = cert->cert_cb_arg;
+
 	return(ret);
 	
 #if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
@@ -363,21 +366,36 @@ err:
 		EC_KEY_free(ret->ecdh_tmp);
 #endif
 
-	for (i = 0; i < SSL_PKEY_NUM; i++)
-		{
-		CERT_PKEY *rpk = ret->pkeys + i;
-		if (rpk->x509 != NULL)
-			X509_free(rpk->x509);
-		if (rpk->privatekey != NULL)
-			EVP_PKEY_free(rpk->privatekey);
-		if (rpk->chain)
-			sk_X509_pop_free(rpk->chain, X509_free);
-		}
-
+	ssl_cert_clear_certs(ret);
 
 	return NULL;
 	}
 
+/* Free up and clear all certificates and chains */
+
+void ssl_cert_clear_certs(CERT *c)
+	{
+	int i;
+	for (i = 0; i<SSL_PKEY_NUM; i++)
+		{
+		CERT_PKEY *cpk = c->pkeys + i;
+		if (cpk->x509)
+			{
+			X509_free(cpk->x509);
+			cpk->x509 = NULL;
+			}
+		if (cpk->privatekey)
+			{
+			EVP_PKEY_free(cpk->privatekey);
+			cpk->privatekey = NULL;
+			}
+		if (cpk->chain)
+			{
+			sk_X509_pop_free(cpk->chain, X509_free);
+			cpk->chain = NULL;
+			}
+		}
+	}
 
 void ssl_cert_free(CERT *c)
 	{
@@ -409,20 +427,8 @@ void ssl_cert_free(CERT *c)
 	if (c->ecdh_tmp) EC_KEY_free(c->ecdh_tmp);
 #endif
 
-	for (i=0; i<SSL_PKEY_NUM; i++)
-		{
-		CERT_PKEY *cpk = c->pkeys + i;
-		if (cpk->x509 != NULL)
-			X509_free(cpk->x509);
-		if (cpk->privatekey != NULL)
-			EVP_PKEY_free(cpk->privatekey);
-		if (cpk->chain)
-			sk_X509_pop_free(cpk->chain, X509_free);
-#if 0
-		if (c->pkeys[i].publickey != NULL)
-			EVP_PKEY_free(c->pkeys[i].publickey);
-#endif
-		}
+	ssl_cert_clear_certs(c);
+
 	if (c->sigalgs)
 		OPENSSL_free(c->sigalgs);
 	OPENSSL_free(c);
@@ -510,6 +516,12 @@ int ssl_cert_add1_chain_cert(CERT *c, X509 *x)
 	return 1;
 	}
 
+void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg)
+	{
+	c->cert_cb = cb;
+	c->cert_cb_arg = arg;
+	}
+
 SESS_CERT *ssl_sess_cert_new(void)
 	{
 	SESS_CERT *ret;
diff --git a/ssl/ssl_err.c b/ssl/ssl_err.c
index eec42fa54b..7bde072466 100644
--- a/ssl/ssl_err.c
+++ b/ssl/ssl_err.c
@@ -345,6 +345,7 @@ static ERR_STRING_DATA SSL_str_reasons[]=
 {ERR_REASON(SSL_R_CA_DN_TOO_LONG)        ,"ca dn too long"},
 {ERR_REASON(SSL_R_CCS_RECEIVED_EARLY)    ,"ccs received early"},
 {ERR_REASON(SSL_R_CERTIFICATE_VERIFY_FAILED),"certificate verify failed"},
+{ERR_REASON(SSL_R_CERT_CB_ERROR)         ,"cert cb error"},
 {ERR_REASON(SSL_R_CERT_LENGTH_MISMATCH)  ,"cert length mismatch"},
 {ERR_REASON(SSL_R_CHALLENGE_IS_DIFFERENT),"challenge is different"},
 {ERR_REASON(SSL_R_CIPHER_CODE_WRONG_LENGTH),"cipher code wrong length"},
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index 679894cb3d..12a0448fe2 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -526,6 +526,12 @@ int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
 	return X509_VERIFY_PARAM_set1(ssl->param, vpm);
 	}
 
+void SSL_certs_clear(SSL *s)
+	{
+	if (s->cert)
+		ssl_cert_clear_certs(s->cert);
+	}
+
 void SSL_free(SSL *s)
 	{
 	int i;
@@ -2037,6 +2043,16 @@ void SSL_CTX_set_verify_depth(SSL_CTX *ctx,int depth)
 	X509_VERIFY_PARAM_set_depth(ctx->param, depth);
 	}
 
+void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb)(SSL *ssl, void *arg), void *arg)
+	{
+	ssl_cert_set_cert_cb(c->cert, cb, arg);
+	}
+
+void SSL_set_cert_cb(SSL *s, int (*cb)(SSL *ssl, void *arg), void *arg)
+	{
+	ssl_cert_set_cert_cb(s->cert, cb, arg);
+	}
+
 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher)
 	{
 	CERT_PKEY *cpk;
diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h
index c340ac3ce7..cc15a5d411 100644
--- a/ssl/ssl_locl.h
+++ b/ssl/ssl_locl.h
@@ -512,6 +512,15 @@ typedef struct cert_st
 	TLS_SIGALGS *sigalgs;
 	/* Size of above array */
 	size_t sigalgslen;
+	/* Certificate setup callback: if set is called whenever a
+	 * certificate may be required (client or server). the callback
+	 * can then examine any appropriate parameters and setup any
+	 * certificates required. This allows advanced applications
+	 * to select certificates on the fly: for example based on
+	 * supported signature algorithms or curves.
+	 */
+	int (*cert_cb)(SSL *ssl, void *arg);
+	void *cert_cb_arg;
 
 	int references; /* >1 only if SSL_copy_session_id is used */
 	} CERT;
@@ -822,6 +831,7 @@ int ssl_clear_bad_session(SSL *s);
 CERT *ssl_cert_new(void);
 CERT *ssl_cert_dup(CERT *cert);
 int ssl_cert_inst(CERT **o);
+void ssl_cert_clear_certs(CERT *c);
 void ssl_cert_free(CERT *c);
 SESS_CERT *ssl_sess_cert_new(void);
 void ssl_sess_cert_free(SESS_CERT *sc);
@@ -849,6 +859,7 @@ int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
 int ssl_cert_add0_chain_cert(CERT *c, X509 *x);
 int ssl_cert_add1_chain_cert(CERT *c, X509 *x);
+void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg);
 
 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);