From: Arne Schwabe Date: Fri, 17 Jul 2020 13:47:32 +0000 (+0200) Subject: Drop support for OpenSSL 1.0.1 X-Git-Tag: v2.5_beta1~48 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ec7d0e8e0f8cd8f1c5fab58c795a59828eba6ae7;p=thirdparty%2Fopenvpn.git Drop support for OpenSSL 1.0.1 OpenSSL 1.0.1 was supported until 2016-12-31. Rhel6/Centos6 still use this version but considering that RHEL7 and RHEL8 are already out, these versions can also stay with OpenVPN 2.4. All the supported Debian based distributions also come with at least 1.0.2. We (accidently) unconditionally compiled some key exporter code on OpenSSL 1.0.2+ without problems. So always compile the whole key exporter feature for OpenSSL. This also allows the tls groups commit to be applied without adding ifdefs to disable that functionality on OpenSSL 1.0.1 Signed-off-by: Arne Schwabe Acked-by: Steffan Karger Message-Id: <20200717134739.21168-2-arne@rfc2549.org> URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20441.html Signed-off-by: Gert Doering --- diff --git a/.travis.yml b/.travis.yml index b154277e2..9e374f55d 100644 --- a/.travis.yml +++ b/.travis.yml @@ -35,10 +35,6 @@ jobs: env: SSLLIB="openssl" RUN_COVERITY="1" os: linux compiler: gcc - - name: gcc | openssl-1.0.1u - env: SSLLIB="openssl" OPENSSL_VERSION="1.0.1u" - os: linux - compiler: gcc - name: gcc | openssl-1.1.1d env: SSLLIB="openssl" OPENSSL_VERSION="1.1.1d" os: linux @@ -87,10 +83,6 @@ jobs: env: SSLLIB="mbedtls" os: osx compiler: clang - - name: mingw64 | openssl-1.0.1u - env: SSLLIB="openssl" CHOST=x86_64-w64-mingw32 OPENSSL_VERSION="1.0.1u" - os: linux - compiler: ": Win64 build only" - name: mingw64 | openssl-1.1.1d env: SSLLIB="openssl" CHOST=x86_64-w64-mingw32 OPENSSL_VERSION="1.1.1d" os: linux diff --git a/Changes.rst b/Changes.rst index 34abcd973..769fc93da 100644 --- a/Changes.rst +++ b/Changes.rst @@ -45,6 +45,10 @@ User-visible Changes client-disconnect-script is now called immediately. Previously it was called, when the VPN session was terminated. +- Support for building with OpenSSL 1.0.1 has been removed. The minimum + supported OpenSSL version is now 1.0.2. + + Overview of changes in 2.4 ========================== diff --git a/INSTALL b/INSTALL index de0eb5189..9db5b6457 100644 --- a/INSTALL +++ b/INSTALL @@ -71,12 +71,13 @@ REQUIRES: (1) TUN and/or TAP driver to allow user-space programs to control a virtual point-to-point IP or Ethernet device. See TUN/TAP Driver Configuration section below for more info. - -OPTIONAL (but recommended): - (1) OpenSSL library, necessary for encryption, version 1.0.1 or higher + (2) OpenSSL library, necessary for encryption, version 1.0.2 or higher required, available from http://www.openssl.org/ - (2) mbed TLS library, an alternative for encryption, version 2.0 or higher + or + (3) mbed TLS library, an alternative for encryption, version 2.0 or higher required, available from https://tls.mbed.org/ + +OPTIONAL: (3) LZO real-time compression library, required for link compression, available from http://www.oberhumer.com/opensource/lzo/ OpenBSD users can use ports or packages to install lzo, but remember diff --git a/configure.ac b/configure.ac index 8ed83bc22..d742ae207 100644 --- a/configure.ac +++ b/configure.ac @@ -848,7 +848,7 @@ if test "${with_crypto_library}" = "openssl"; then # if the user did not explicitly specify flags, try to autodetect PKG_CHECK_MODULES( [OPENSSL], - [openssl >= 1.0.1], + [openssl >= 1.0.2], [have_openssl="yes"], [] # If this fails, we will do another test next ) @@ -863,7 +863,7 @@ if test "${with_crypto_library}" = "openssl"; then # If pkgconfig check failed or OPENSSL_CFLAGS/OPENSSL_LIBS env vars # are used, check the version directly in the OpenSSL include file if test "${have_openssl}" != "yes"; then - AC_MSG_CHECKING([additionally if OpenSSL is available and version >= 1.0.1]) + AC_MSG_CHECKING([additionally if OpenSSL is available and version >= 1.0.2]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ @@ -871,7 +871,7 @@ if test "${with_crypto_library}" = "openssl"; then ]], [[ /* Version encoding: MNNFFPPS - see opensslv.h for details */ -#if OPENSSL_VERSION_NUMBER < 0x10001000L +#if OPENSSL_VERSION_NUMBER < 0x10002000L #error OpenSSL too old #endif ]] @@ -914,12 +914,9 @@ if test "${with_crypto_library}" = "openssl"; then [have_crypto_aead_modes="no"] ) + # All supported OpenSSL version (>= 1.0.2) + # have this feature have_export_keying_material="yes" - AC_CHECK_FUNC( - [SSL_export_keying_material], - , - [have_export_keying_material="no"] - ) AC_CHECK_FUNCS( [ \ @@ -940,7 +937,6 @@ if test "${with_crypto_library}" = "openssl"; then X509_STORE_get0_objects \ X509_OBJECT_free \ X509_OBJECT_get_type \ - EVP_PKEY_id \ EVP_PKEY_get0_RSA \ EVP_PKEY_get0_DSA \ EVP_PKEY_get0_EC_KEY \ diff --git a/src/openvpn/crypto.c b/src/openvpn/crypto.c index 1ce981841..bbf47ef71 100644 --- a/src/openvpn/crypto.c +++ b/src/openvpn/crypto.c @@ -428,13 +428,6 @@ openvpn_decrypt_aead(struct buffer *buf, struct buffer work, tag_ptr = BPTR(buf); ASSERT(buf_advance(buf, tag_size)); dmsg(D_PACKET_CONTENT, "DECRYPT MAC: %s", format_hex(tag_ptr, tag_size, 0, &gc)); -#if defined(ENABLE_CRYPTO_OPENSSL) && OPENSSL_VERSION_NUMBER < 0x10001040L - /* OpenSSL <= 1.0.1c bug requires set tag before processing ciphertext */ - if (!EVP_CIPHER_CTX_ctrl(ctx->cipher, EVP_CTRL_GCM_SET_TAG, tag_size, tag_ptr)) - { - CRYPT_ERROR("setting tag failed"); - } -#endif if (buf->len < 1) { diff --git a/src/openvpn/openssl_compat.h b/src/openvpn/openssl_compat.h index 4ac8f24de..d35251fbf 100644 --- a/src/openvpn/openssl_compat.h +++ b/src/openvpn/openssl_compat.h @@ -271,20 +271,6 @@ EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey) } #endif -#if !defined(HAVE_EVP_PKEY_ID) -/** - * Get the PKEY type - * - * @param pkey Public key object - * @return The key type - */ -static inline int -EVP_PKEY_id(const EVP_PKEY *pkey) -{ - return pkey ? pkey->type : EVP_PKEY_NONE; -} -#endif - #if !defined(HAVE_EVP_PKEY_GET0_DSA) /** * Get the DSA object of a public key diff --git a/src/openvpn/options.c b/src/openvpn/options.c index a81336f2c..04518bf58 100644 --- a/src/openvpn/options.c +++ b/src/openvpn/options.c @@ -8670,7 +8670,7 @@ add_option(struct options *options, options->keying_material_exporter_label = p[1]; options->keying_material_exporter_length = ekm_length; } -#endif /* if defined(ENABLE_CRYPTO_OPENSSL) && OPENSSL_VERSION_NUMBER >= 0x10001000 */ +#endif /* HAVE_EXPORT_KEYING_MATERIAL */ else if (streq(p[0], "allow-recursive-routing") && !p[1]) { VERIFY_PERMISSION(OPT_P_GENERAL); diff --git a/src/openvpn/ssl_mbedtls.c b/src/openvpn/ssl_mbedtls.c index f518f593c..977ff5c37 100644 --- a/src/openvpn/ssl_mbedtls.c +++ b/src/openvpn/ssl_mbedtls.c @@ -1108,7 +1108,7 @@ key_state_ssl_init(struct key_state_ssl *ks_ssl, } } -#if HAVE_EXPORT_KEYING_MATERIAL +#ifdef HAVE_EXPORT_KEYING_MATERIAL /* Initialize keying material exporter */ if (session->opt->ekm_size) { diff --git a/src/openvpn/ssl_openssl.c b/src/openvpn/ssl_openssl.c index 07d422c9d..14d52bfad 100644 --- a/src/openvpn/ssl_openssl.c +++ b/src/openvpn/ssl_openssl.c @@ -164,7 +164,6 @@ key_state_export_keying_material(struct key_state_ssl *ssl, { if (session->opt->ekm_size > 0) { -#if (OPENSSL_VERSION_NUMBER >= 0x10001000) unsigned int size = session->opt->ekm_size; struct gc_arena gc = gc_new(); unsigned char *ekm = (unsigned char *) gc_malloc(size, true, &gc); @@ -188,7 +187,6 @@ key_state_export_keying_material(struct key_state_ssl *ssl, setenv_del(session->opt->es, "exported_keying_material"); } gc_free(&gc); -#endif /* if (OPENSSL_VERSION_NUMBER >= 0x10001000) */ } } @@ -559,7 +557,7 @@ tls_ctx_set_cert_profile(struct tls_root_ctx *ctx, const char *profile) #else /* ifdef HAVE_SSL_CTX_SET_SECURITY_LEVEL */ if (profile) { - msg(M_WARN, "WARNING: OpenSSL 1.0.1 does not support --tls-cert-profile" + msg(M_WARN, "WARNING: OpenSSL 1.0.2 does not support --tls-cert-profile" ", ignoring user-set profile: '%s'", profile); } #endif /* ifdef HAVE_SSL_CTX_SET_SECURITY_LEVEL */ @@ -573,19 +571,11 @@ tls_ctx_check_cert_time(const struct tls_root_ctx *ctx) ASSERT(ctx); -#if (OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)) \ - || LIBRESSL_VERSION_NUMBER >= 0x2070000fL - /* OpenSSL 1.0.2 and up */ cert = SSL_CTX_get0_certificate(ctx->ctx); -#else - /* OpenSSL 1.0.1 and earlier need an SSL object to get at the certificate */ - SSL *ssl = SSL_new(ctx->ctx); - cert = SSL_get_certificate(ssl); -#endif if (cert == NULL) { - goto cleanup; /* Nothing to check if there is no certificate */ + return; /* Nothing to check if there is no certificate */ } ret = X509_cmp_time(X509_get0_notBefore(cert), NULL); @@ -607,13 +597,6 @@ tls_ctx_check_cert_time(const struct tls_root_ctx *ctx) { msg(M_WARN, "WARNING: Your certificate has expired!"); } - -cleanup: -#if OPENSSL_VERSION_NUMBER < 0x10002000L \ - || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x2070000fL) - SSL_free(ssl); -#endif - return; } void @@ -680,7 +663,6 @@ tls_ctx_load_ecdh_params(struct tls_root_ctx *ctx, const char *curve_name } else { -#if OPENSSL_VERSION_NUMBER >= 0x10002000L #if (OPENSSL_VERSION_NUMBER < 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)) /* OpenSSL 1.0.2 and newer can automatically handle ECDH parameter @@ -691,29 +673,6 @@ tls_ctx_load_ecdh_params(struct tls_root_ctx *ctx, const char *curve_name * so do nothing */ #endif return; -#else /* if OPENSSL_VERSION_NUMBER >= 0x10002000L */ - /* For older OpenSSL we have to extract the curve from key on our own */ - EC_KEY *eckey = NULL; - const EC_GROUP *ecgrp = NULL; - EVP_PKEY *pkey = NULL; - - /* Little hack to get private key ref from SSL_CTX, yay OpenSSL... */ - SSL *ssl = SSL_new(ctx->ctx); - if (!ssl) - { - crypto_msg(M_FATAL, "SSL_new failed"); - } - pkey = SSL_get_privatekey(ssl); - SSL_free(ssl); - - msg(D_TLS_DEBUG, "Extracting ECDH curve from private key"); - - if (pkey != NULL && (eckey = EVP_PKEY_get1_EC_KEY(pkey)) != NULL - && (ecgrp = EC_KEY_get0_group(eckey)) != NULL) - { - nid = EC_GROUP_get_curve_name(ecgrp); - } -#endif /* if OPENSSL_VERSION_NUMBER >= 0x10002000L */ } /* Translate NID back to name , just for kicks */ @@ -1462,15 +1421,7 @@ tls_ctx_use_management_external_key(struct tls_root_ctx *ctx) ASSERT(NULL != ctx); -#if (OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)) \ - || LIBRESSL_VERSION_NUMBER >= 0x2070000fL - /* OpenSSL 1.0.2 and up */ X509 *cert = SSL_CTX_get0_certificate(ctx->ctx); -#else - /* OpenSSL 1.0.1 and earlier need an SSL object to get at the certificate */ - SSL *ssl = SSL_new(ctx->ctx); - X509 *cert = SSL_get_certificate(ssl); -#endif ASSERT(NULL != cert); @@ -1510,13 +1461,6 @@ tls_ctx_use_management_external_key(struct tls_root_ctx *ctx) ret = 0; cleanup: -#if OPENSSL_VERSION_NUMBER < 0x10002000L \ - || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x2070000fL) - if (ssl) - { - SSL_free(ssl); - } -#endif if (ret) { crypto_msg(M_FATAL, "Cannot enable SSL external private key capability");