Disable SSL renegotiation in order to protect against a serious

protocol flaw. [09:15]

Correctly handle failures from unsetenv resulting from a corrupt
environment in rtld-elf. [09:16]

Fix permissions in freebsd-update in order to prevent leakage of
sensitive files. [09:17]

Approved by:	so (cperciva)
Security:	FreeBSD-SA-09:15.ssl
Security:	FreeBSD-SA-09:16.rtld
Security:	FreeBSD-SA-09:17.freebsd-udpate

3 files changed, 12 insertions, 5 deletions

diff --git a/crypto/openssl/ssl/s3_lib.c b/crypto/openssl/ssl/s3_lib.c
index 8916a0b..1b38f72 100644
--- a/crypto/openssl/ssl/s3_lib.c
+++ b/crypto/openssl/ssl/s3_lib.c
@@ -2592,6 +2592,9 @@ int ssl3_renegotiate(SSL *s)
 	if (s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS)
 		return(0);
 
+	if (1)
+		return(0);
+
 	s->s3->renegotiate=1;
 	return(1);
 	}
diff --git a/crypto/openssl/ssl/s3_pkt.c b/crypto/openssl/ssl/s3_pkt.c
index 9476dcd..1644f19 100644
--- a/crypto/openssl/ssl/s3_pkt.c
+++ b/crypto/openssl/ssl/s3_pkt.c
@@ -983,9 +983,7 @@ start:
 		if (s->msg_callback)
 			s->msg_callback(0, s->version, SSL3_RT_HANDSHAKE, s->s3->handshake_fragment, 4, s, s->msg_callback_arg);
 
-		if (SSL_is_init_finished(s) &&
-			!(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS) &&
-			!s->s3->renegotiate)
+		if (0)
 			{
 			ssl3_renegotiate(s);
 			if (ssl3_renegotiate_check(s))
@@ -1116,8 +1114,7 @@ start:
 	/* Unexpected handshake message (Client Hello, or protocol violation) */
 	if ((s->s3->handshake_fragment_len >= 4) &&	!s->in_handshake)
 		{
-		if (((s->state&SSL_ST_MASK) == SSL_ST_OK) &&
-			!(s->s3->flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS))
+		if (0)
 			{
 #if 0 /* worked only because C operator preferences are not as expected (and
        * because this is not really needed for clients except for detecting
diff --git a/crypto/openssl/ssl/s3_srvr.c b/crypto/openssl/ssl/s3_srvr.c
index 80b45eb..b2ba9ff 100644
--- a/crypto/openssl/ssl/s3_srvr.c
+++ b/crypto/openssl/ssl/s3_srvr.c
@@ -718,6 +718,13 @@ int ssl3_get_client_hello(SSL *s)
 #endif
 	STACK_OF(SSL_CIPHER) *ciphers=NULL;
 
+	if (s->new_session)
+		{
+		al=SSL_AD_HANDSHAKE_FAILURE;
+		SSLerr(SSL_F_SSL3_GET_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
+		goto f_err;
+		}
+
 	/* We do this so that we will respond with our native type.
 	 * If we are TLSv1 and we get SSLv3, we will respond with TLSv1,
 	 * This down switching should be handled by a different method.