disable SSLv2 and use "HIGH" crypto cipher suites by default.

suggested by dlg@

3 files changed, 21 insertions, 17 deletions

diff --git a/usr.sbin/relayd/relay.c b/usr.sbin/relayd/relay.c
index 6078d36d891..00d82e90b2f 100644
--- a/usr.sbin/relayd/relay.c
+++ b/usr.sbin/relayd/relay.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: relay.c,v 1.3 2007/02/24 00:22:32 reyk Exp $	*/
+/*	$OpenBSD: relay.c,v 1.4 2007/02/24 15:48:54 reyk Exp $	*/
 
 /*
  * Copyright (c) 2006, 2007 Reyk Floeter <reyk@openbsd.org>
@@ -1589,7 +1589,7 @@ relay_ssl_ctx_create(struct relay *rlay)
 {
 	struct protocol *proto = rlay->proto;
 	SSL_CTX *ctx;
-	char certfile[PATH_MAX], hbuf[128];
+	char certfile[PATH_MAX], hbuf[128], *ciphers = NULL;
 
 	ctx = SSL_CTX_new(SSLv23_method());
 	if (ctx == NULL)
@@ -1619,12 +1619,10 @@ relay_ssl_ctx_create(struct relay *rlay)
 		SSL_CTX_set_options(ctx, SSL_OP_NO_TLSv1);
 
 	/* Change the default SSL cipher suite, if specified */
-	if (proto->sslciphers != NULL) {
-		log_debug("relay_ssl_ctx_create: ciphers '%s'",
-		    proto->sslciphers);
-		if (!SSL_CTX_set_cipher_list(ctx, proto->sslciphers))
-			goto err;
-	}
+	if ((ciphers = proto->sslciphers) == NULL)
+		ciphers = SSLCIPHERS_DEFAULT;
+	if (!SSL_CTX_set_cipher_list(ctx, ciphers))
+		goto err;
 
 	if (relay_host(&rlay->ss, hbuf, sizeof(hbuf)) == NULL)
 		goto err;
diff --git a/usr.sbin/relayd/relayd.conf.5 b/usr.sbin/relayd/relayd.conf.5
index 4741ad1ed17..67dc4cbb859 100644
--- a/usr.sbin/relayd/relayd.conf.5
+++ b/usr.sbin/relayd/relayd.conf.5
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: relayd.conf.5,v 1.24 2007/02/24 00:22:32 reyk Exp $
+.\"	$OpenBSD: relayd.conf.5,v 1.25 2007/02/24 15:48:54 reyk Exp $
 .\"
 .\" Copyright (c) 2006 Pierre-Yves Ritschard <pyr@spootnik.org>
 .\"
@@ -517,8 +517,9 @@ Valid options are:
 .Bl -tag -width Ds
 .It Ic ciphers Ar string
 Set the string defining the SSL cipher suite.
-If not specified, the default suite defined by the SSL library will be
-used.
+If not specified, the default value 
+.Ar HIGH
+to force strong crypto cipher suites will be used.
 See the
 .Sx CIPHERS
 section of
@@ -536,17 +537,20 @@ will disable the SSL session cache.
 .Op Ic no
 .Ic sslv2
 .Xc
-Enable the SSLv2 protocol.
+Enable the SSLv2 protocol,
+disabled by default.
 .It Xo
 .Op Ic no
 .Ic sslv3
 .Xc
-Enable the SSLv3 protocol.
+Disable the SSLv3 protocol,
+enabled by default.
 .It Xo
 .Op Ic no
 .Ic tlsv1
 .Xc
-Enable the TLSv1/SSLv3.1 protocol.
+Disable the TLSv1/SSLv3.1 protocol,
+enabled by default.
 .El
 .El
 .Pp
@@ -647,7 +651,7 @@ protocol http_ssl {
         change "Keep-Alive" to "$TIMEOUT"
 	url hash "sessid"
 
-	ssl { no sslv2, ciphers "HIGH" }
+	ssl { sslv2, ciphers "MEDIUM:HIGH" }
 }
 
 relay sslaccel {
diff --git a/usr.sbin/relayd/relayd.h b/usr.sbin/relayd/relayd.h
index 1cbf33b45d7..205a1af9027 100644
--- a/usr.sbin/relayd/relayd.h
+++ b/usr.sbin/relayd/relayd.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: relayd.h,v 1.28 2007/02/24 00:22:32 reyk Exp $	*/
+/*	$OpenBSD: relayd.h,v 1.29 2007/02/24 15:48:54 reyk Exp $	*/
 
 /*
  * Copyright (c) 2006, 2007 Pierre-Yves Ritschard <pyr@spootnik.org>
@@ -396,7 +396,9 @@ enum prototype {
 #define SSLFLAG_SSLV3		0x02
 #define SSLFLAG_TLSV1		0x04
 #define SSLFLAG_VERSION		0x07
-#define SSLFLAG_DEFAULT		(SSLFLAG_SSLV2|SSLFLAG_SSLV3|SSLFLAG_TLSV1)
+#define SSLFLAG_DEFAULT		(SSLFLAG_SSLV3|SSLFLAG_TLSV1)
+
+#define SSLCIPHERS_DEFAULT	"HIGH"
 
 struct protocol {
 	objid_t			 id;