diff options
author | Stefan Bühler <stbuehler@web.de> | 2011-03-13 18:00:09 +0000 |
---|---|---|
committer | Stefan Bühler <stbuehler@web.de> | 2011-03-13 18:00:09 +0000 |
commit | f610f894a35b5ef0e082b9f3bd24fa338bb10147 (patch) | |
tree | 6b41126012531fa464bc5f85d2297082b9733811 | |
parent | 562a6ba83b2f1971ee72fe7a146a2801f93fe291 (diff) | |
download | lighttpd-git-f610f894a35b5ef0e082b9f3bd24fa338bb10147.tar.gz |
ssl: Support for Diffie-Hellman and Elliptic-Curve Diffie-Hellman key exchange (fixes #2301, #2246, #2239)
- add ssl.use-sslv3
- load all algorithms
git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@2780 152afb58-edef-0310-8abb-c4023f1b3aa9
-rw-r--r-- | NEWS | 3 | ||||
-rw-r--r-- | src/base.h | 6 | ||||
-rw-r--r-- | src/configfile.c | 18 | ||||
-rw-r--r-- | src/network.c | 115 |
4 files changed, 142 insertions, 0 deletions
@@ -8,6 +8,9 @@ NEWS * Silence annoying "connection closed: poll() -> ERR" error.log message (fixes #2257) * mod_cgi: make read buffer as big as incoming data block * [build] Fix detection of libev (fixes #2300) + * ssl: Support for Diffie-Hellman and Elliptic-Curve Diffie-Hellman key exchange (fixes #2301) + add ssl.use-sslv3 (fixes #2246) + load all algorithms (fixes #2239) - 1.4.28 - 2010-08-22 * Rename fdevent_event_add to _set to reflect what the function does. Fix some handlers. (fixes #2249) @@ -275,7 +275,10 @@ typedef struct { buffer *ssl_pemfile; buffer *ssl_ca_file; buffer *ssl_cipher_list; + buffer *ssl_dh_file; + buffer *ssl_ec_curve; unsigned short ssl_use_sslv2; + unsigned short ssl_use_sslv3; unsigned short ssl_verifyclient; unsigned short ssl_verifyclient_enforce; unsigned short ssl_verifyclient_depth; @@ -527,7 +530,10 @@ typedef struct { buffer *ssl_pemfile; buffer *ssl_ca_file; buffer *ssl_cipher_list; + buffer *ssl_dh_file; + buffer *ssl_ec_curve; unsigned short ssl_use_sslv2; + unsigned short ssl_use_sslv3; unsigned short use_ipv6; unsigned short is_ssl; diff --git a/src/configfile.c b/src/configfile.c index 0ee96b61..f0b6c468 100644 --- a/src/configfile.c +++ b/src/configfile.c @@ -102,6 +102,9 @@ static int config_insert(server *srv) { { "ssl.verifyclient.exportcert", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_SERVER }, /* 60 */ { "server.set-v6only", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 61 */ + { "ssl.use-sslv3", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_SERVER }, /* 62 */ + { "ssl.dh-file", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_SERVER }, /* 63 */ + { "ssl.ec-curve", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_SERVER }, /* 64 */ { "server.host", "use server.bind instead", T_CONFIG_DEPRECATED, T_CONFIG_SCOPE_UNSET }, { "server.docroot", "use server.document-root instead", T_CONFIG_DEPRECATED, T_CONFIG_SCOPE_UNSET }, @@ -164,6 +167,8 @@ static int config_insert(server *srv) { s->error_handler = buffer_init(); s->server_tag = buffer_init(); s->ssl_cipher_list = buffer_init(); + s->ssl_dh_file = buffer_init(); + s->ssl_ec_curve = buffer_init(); s->errorfile_prefix = buffer_init(); s->max_keep_alive_requests = 16; s->max_keep_alive_idle = 5; @@ -172,6 +177,7 @@ static int config_insert(server *srv) { s->use_xattr = 0; s->is_ssl = 0; s->ssl_use_sslv2 = 0; + s->ssl_use_sslv3 = 1; s->use_ipv6 = 0; s->set_v6only = 1; s->defer_accept = 0; @@ -236,6 +242,9 @@ static int config_insert(server *srv) { cv[47].destination = s->ssl_cipher_list; cv[48].destination = &(s->ssl_use_sslv2); + cv[62].destination = &(s->ssl_use_sslv3); + cv[63].destination = s->ssl_dh_file; + cv[64].destination = s->ssl_ec_curve; cv[49].destination = &(s->etag_use_inode); cv[50].destination = &(s->etag_use_mtime); cv[51].destination = &(s->etag_use_size); @@ -324,7 +333,10 @@ int config_setup_connection(server *srv, connection *con) { #endif PATCH(ssl_ca_file); PATCH(ssl_cipher_list); + PATCH(ssl_dh_file); + PATCH(ssl_ec_curve); PATCH(ssl_use_sslv2); + PATCH(ssl_use_sslv3); PATCH(etag_use_inode); PATCH(etag_use_mtime); PATCH(etag_use_size); @@ -390,10 +402,16 @@ int config_patch_connection(server *srv, connection *con, comp_key_t comp) { PATCH(ssl_ca_file); } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.use-sslv2"))) { PATCH(ssl_use_sslv2); + } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.use-sslv3"))) { + PATCH(ssl_use_sslv3); } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.cipher-list"))) { PATCH(ssl_cipher_list); } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.engine"))) { PATCH(is_ssl); + } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.dh-file"))) { + PATCH(ssl_dh_file); + } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("ssl.ec-curve"))) { + PATCH(ssl_ec_curve); #ifdef HAVE_LSTAT } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("server.follow-symlink"))) { PATCH(follow_symlink); diff --git a/src/network.c b/src/network.c index a98b4b84..d73310f7 100644 --- a/src/network.c +++ b/src/network.c @@ -479,6 +479,52 @@ int network_init(server *srv) { size_t i; network_backend_t backend; + DH *dh; + BIO *bio; +#if OPENSSL_VERSION_NUMBER >= 0x0090800fL + EC_KEY *ecdh; + int nid; +#endif + + /* 1024-bit MODP Group with 160-bit prime order subgroup (RFC5114) + * -----BEGIN DH PARAMETERS----- + * MIIBDAKBgQCxC4+WoIDgHd6S3l6uXVTsUsmfvPsGo8aaap3KUtI7YWBz4oZ1oj0Y + * mDjvHi7mUsAT7LSuqQYRIySXXDzUm4O/rMvdfZDEvXCYSI6cIZpzck7/1vrlZEc4 + * +qMaT/VbzMChUa9fDci0vUW/N982XBpl5oz9p21NpwjfH7K8LkpDcQKBgQCk0cvV + * w/00EmdlpELvuZkF+BBN0lisUH/WQGz/FCZtMSZv6h5cQVZLd35pD1UE8hMWAhe0 + * sBuIal6RVH+eJ0n01/vX07mpLuGQnQ0iY/gKdqaiTAh6CR9THb8KAWm2oorWYqTR + * jnOvoy13nVkY0IvIhY9Nzvl8KiSFXm7rIrOy5QICAKA= + * -----END DH PARAMETERS----- + */ + + static unsigned char dh1024_p[]={ + 0xB1,0x0B,0x8F,0x96,0xA0,0x80,0xE0,0x1D,0xDE,0x92,0xDE,0x5E, + 0xAE,0x5D,0x54,0xEC,0x52,0xC9,0x9F,0xBC,0xFB,0x06,0xA3,0xC6, + 0x9A,0x6A,0x9D,0xCA,0x52,0xD2,0x3B,0x61,0x60,0x73,0xE2,0x86, + 0x75,0xA2,0x3D,0x18,0x98,0x38,0xEF,0x1E,0x2E,0xE6,0x52,0xC0, + 0x13,0xEC,0xB4,0xAE,0xA9,0x06,0x11,0x23,0x24,0x97,0x5C,0x3C, + 0xD4,0x9B,0x83,0xBF,0xAC,0xCB,0xDD,0x7D,0x90,0xC4,0xBD,0x70, + 0x98,0x48,0x8E,0x9C,0x21,0x9A,0x73,0x72,0x4E,0xFF,0xD6,0xFA, + 0xE5,0x64,0x47,0x38,0xFA,0xA3,0x1A,0x4F,0xF5,0x5B,0xCC,0xC0, + 0xA1,0x51,0xAF,0x5F,0x0D,0xC8,0xB4,0xBD,0x45,0xBF,0x37,0xDF, + 0x36,0x5C,0x1A,0x65,0xE6,0x8C,0xFD,0xA7,0x6D,0x4D,0xA7,0x08, + 0xDF,0x1F,0xB2,0xBC,0x2E,0x4A,0x43,0x71, + }; + + static unsigned char dh1024_g[]={ + 0xA4,0xD1,0xCB,0xD5,0xC3,0xFD,0x34,0x12,0x67,0x65,0xA4,0x42, + 0xEF,0xB9,0x99,0x05,0xF8,0x10,0x4D,0xD2,0x58,0xAC,0x50,0x7F, + 0xD6,0x40,0x6C,0xFF,0x14,0x26,0x6D,0x31,0x26,0x6F,0xEA,0x1E, + 0x5C,0x41,0x56,0x4B,0x77,0x7E,0x69,0x0F,0x55,0x04,0xF2,0x13, + 0x16,0x02,0x17,0xB4,0xB0,0x1B,0x88,0x6A,0x5E,0x91,0x54,0x7F, + 0x9E,0x27,0x49,0xF4,0xD7,0xFB,0xD7,0xD3,0xB9,0xA9,0x2E,0xE1, + 0x90,0x9D,0x0D,0x22,0x63,0xF8,0x0A,0x76,0xA6,0xA2,0x4C,0x08, + 0x7A,0x09,0x1F,0x53,0x1D,0xBF,0x0A,0x01,0x69,0xB6,0xA2,0x8A, + 0xD6,0x62,0xA4,0xD1,0x8E,0x73,0xAF,0xA3,0x2D,0x77,0x9D,0x59, + 0x18,0xD0,0x8B,0xC8,0x85,0x8F,0x4D,0xCE,0xF9,0x7C,0x2A,0x24, + 0x85,0x5E,0x6E,0xEB,0x22,0xB3,0xB2,0xE5, + }; + struct nb_map { network_backend_t nb; const char *name; @@ -521,6 +567,7 @@ int network_init(server *srv) { if (srv->ssl_is_init == 0) { SSL_load_error_strings(); SSL_library_init(); + OpenSSL_add_all_algorithms(); srv->ssl_is_init = 1; if (0 == RAND_status()) { @@ -545,6 +592,15 @@ int network_init(server *srv) { } } + if (!s->ssl_use_sslv3) { + /* disable SSLv3 */ + if (!(SSL_OP_NO_SSLv3 & SSL_CTX_set_options(s->ssl_ctx, SSL_OP_NO_SSLv3))) { + log_error_write(srv, __FILE__, __LINE__, "ss", "SSL:", + ERR_error_string(ERR_get_error(), NULL)); + return -1; + } + } + if (!buffer_is_empty(s->ssl_cipher_list)) { /* Disable support for low encryption ciphers */ if (SSL_CTX_set_cipher_list(s->ssl_ctx, s->ssl_cipher_list->ptr) != 1) { @@ -554,6 +610,65 @@ int network_init(server *srv) { } } + /* Support for Diffie-Hellman key exchange */ + if (!buffer_is_empty(s->ssl_dh_file)) { + /* DH parameters from file */ + bio = BIO_new_file((char *) s->ssl_dh_file->ptr, "r"); + if (bio == NULL) { + log_error_write(srv, __FILE__, __LINE__, "ss", "SSL: Unable to open file", s->ssl_dh_file->ptr); + return -1; + } + dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); + BIO_free(bio); + if (dh == NULL) { + log_error_write(srv, __FILE__, __LINE__, "ss", "SSL: PEM_read_bio_DHparams failed", s->ssl_dh_file->ptr); + return -1; + } + } else { + /* Default DH parameters from RFC5114 */ + dh = DH_new(); + if (dh == NULL) { + log_error_write(srv, __FILE__, __LINE__, "s", "SSL: DH_new () failed"); + return -1; + } + dh->p = BN_bin2bn(dh1024_p,sizeof(dh1024_p), NULL); + dh->g = BN_bin2bn(dh1024_g,sizeof(dh1024_g), NULL); + dh->length = 160; + if ((dh->p == NULL) || (dh->g == NULL)) { + DH_free(dh); + log_error_write(srv, __FILE__, __LINE__, "s", "SSL: BN_bin2bn () failed"); + return -1; + } + } + SSL_CTX_set_tmp_dh(s->ssl_ctx,dh); + SSL_CTX_set_options(s->ssl_ctx,SSL_OP_SINGLE_DH_USE); + DH_free(dh); + +#if OPENSSL_VERSION_NUMBER >= 0x0090800fL +#ifndef OPENSSL_NO_ECDH + /* Support for Elliptic-Curve Diffie-Hellman key exchange */ + if (!buffer_is_empty(s->ssl_ec_curve)) { + /* OpenSSL only supports the "named curves" from RFC 4492, section 5.1.1. */ + nid = OBJ_sn2nid((char *) s->ssl_ec_curve->ptr); + if (nid == 0) { + log_error_write(srv, __FILE__, __LINE__, "ss", "SSL: Unknown curve name", s->ssl_ec_curve->ptr); + return -1; + } + } else { + /* Default curve */ + nid = OBJ_sn2nid("prime256v1"); + } + ecdh = EC_KEY_new_by_curve_name(nid); + if (ecdh == NULL) { + log_error_write(srv, __FILE__, __LINE__, "ss", "SSL: Unable to create curve", s->ssl_ec_curve->ptr); + return -1; + } + SSL_CTX_set_tmp_ecdh(s->ssl_ctx,ecdh); + SSL_CTX_set_options(s->ssl_ctx,SSL_OP_SINGLE_ECDH_USE); + EC_KEY_free(ecdh); +#endif +#endif + if (!buffer_is_empty(s->ssl_ca_file)) { if (1 != SSL_CTX_load_verify_locations(s->ssl_ctx, s->ssl_ca_file->ptr, NULL)) { log_error_write(srv, __FILE__, __LINE__, "ssb", "SSL:", |