vsftpd/0022-Introduce-support-for-EDDHE-based-cipher-suites.patch
Richard Lescak 57c94df2dc make vsftpd compatible with Openssl 3.0+
replace old network functions
2023-02-17 16:32:19 +01:00

129 lines
4.4 KiB
Diff

From a6d641a0ccba1033587f6faa0e5e6749fa35f5c4 Mon Sep 17 00:00:00 2001
From: Martin Sehnoutka <msehnout@redhat.com>
Date: Thu, 17 Nov 2016 10:49:22 +0100
Subject: [PATCH 22/59] Introduce support for EDDHE based cipher suites.
---
parseconf.c | 1 +
ssl.c | 37 ++++++++++++++++++++++++++++++++++++-
tunables.c | 4 +++-
tunables.h | 1 +
vsftpd.conf.5 | 8 ++++++++
5 files changed, 49 insertions(+), 2 deletions(-)
diff --git a/parseconf.c b/parseconf.c
index 38e3182..a2c715b 100644
--- a/parseconf.c
+++ b/parseconf.c
@@ -177,6 +177,7 @@ parseconf_str_array[] =
{ "rsa_cert_file", &tunable_rsa_cert_file },
{ "dsa_cert_file", &tunable_dsa_cert_file },
{ "dh_param_file", &tunable_dh_param_file },
+ { "ecdh_param_file", &tunable_ecdh_param_file },
{ "ssl_ciphers", &tunable_ssl_ciphers },
{ "rsa_private_key_file", &tunable_rsa_private_key_file },
{ "dsa_private_key_file", &tunable_dsa_private_key_file },
diff --git a/ssl.c b/ssl.c
index 22b69b3..96bf8ad 100644
--- a/ssl.c
+++ b/ssl.c
@@ -122,7 +122,7 @@ ssl_init(struct vsf_session* p_sess)
{
die("SSL: could not allocate SSL context");
}
- options = SSL_OP_ALL | SSL_OP_SINGLE_DH_USE;
+ options = SSL_OP_ALL | SSL_OP_SINGLE_DH_USE | SSL_OP_SINGLE_ECDH_USE;
if (!tunable_sslv2)
{
options |= SSL_OP_NO_SSLv2;
@@ -244,6 +244,33 @@
SSL_CTX_set0_tmp_dh_pkey(p_ctx, DH_get_dh());
+ if (tunable_ecdh_param_file)
+ {
+ BIO *bio;
+ EVP_PKEY *ec_params = NULL;
+
+ if ((bio = BIO_new_file(tunable_ecdh_param_file, "r")) == NULL)
+ die("SSL: cannot load custom ec params");
+ else
+ {
+ ec_params = PEM_read_bio_Parameters(bio, NULL);
+ BIO_free(bio);
+
+ if (ec_params != NULL)
+ {
+ if (!SSL_CTX_set1_groups_list(p_ctx, ec_params))
+ die("SSL: setting custom EC params failed");
+ }
+ else
+ {
+ die("SSL: getting ec group or key failed");
+ }
+ }
+ }
+ else
+ {
+ SSL_CTX_set1_groups_list(p_ctx, "P-256");
+ }
/* Set up ALPN to check for FTP protocol intention of client. */
SSL_CTX_set_alpn_select_cb(p_ctx, ssl_alpn_callback, p_sess);
/* Set up SNI callback for an optional hostname check. */
diff --git a/tunables.c b/tunables.c
index 1ea7227..93f85b1 100644
--- a/tunables.c
+++ b/tunables.c
@@ -141,6 +141,7 @@ const char* tunable_email_password_file;
const char* tunable_rsa_cert_file;
const char* tunable_dsa_cert_file;
const char* tunable_dh_param_file;
+const char* tunable_ecdh_param_file;
const char* tunable_ssl_ciphers;
const char* tunable_rsa_private_key_file;
const char* tunable_dsa_private_key_file;
@@ -290,7 +291,8 @@ tunables_load_defaults()
&tunable_rsa_cert_file);
install_str_setting(0, &tunable_dsa_cert_file);
install_str_setting(0, &tunable_dh_param_file);
- install_str_setting("AES128-SHA:DES-CBC3-SHA:DHE-RSA-AES256-SHA",
+ install_str_setting(0, &tunable_ecdh_param_file);
+ install_str_setting("AES128-SHA:DES-CBC3-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA",
&tunable_ssl_ciphers);
install_str_setting(0, &tunable_rsa_private_key_file);
install_str_setting(0, &tunable_dsa_private_key_file);
diff --git a/tunables.h b/tunables.h
index 3995472..3e2d40c 100644
--- a/tunables.h
+++ b/tunables.h
@@ -143,6 +143,7 @@ extern const char* tunable_email_password_file;
extern const char* tunable_rsa_cert_file;
extern const char* tunable_dsa_cert_file;
extern const char* tunable_dh_param_file;
+extern const char* tunable_ecdh_param_file;
extern const char* tunable_ssl_ciphers;
extern const char* tunable_rsa_private_key_file;
extern const char* tunable_dsa_private_key_file;
diff --git a/vsftpd.conf.5 b/vsftpd.conf.5
index ff94eca..e242873 100644
--- a/vsftpd.conf.5
+++ b/vsftpd.conf.5
@@ -899,6 +899,14 @@ ephemeral Diffie-Hellman key exchange in SSL.
Default: (none - use built in parameters appropriate for certificate key size)
.TP
+.B ecdh_param_file
+This option specifies the location of custom parameters for ephemeral
+Elliptic Curve Diffie-Hellman (ECDH) key exchange.
+
+Default: (none - use built in parameters, NIST P-256 with OpenSSL 1.0.1 and
+automatically selected curve based on client preferences with OpenSSL 1.0.2
+and later)
+.TP
.B email_password_file
This option can be used to provide an alternate file for usage by the
.BR secure_email_list_enable
--
2.14.4