diff options
Diffstat (limited to 'app/openvpn/src/openvpn/ssl_openssl.c')
| -rw-r--r-- | app/openvpn/src/openvpn/ssl_openssl.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/app/openvpn/src/openvpn/ssl_openssl.c b/app/openvpn/src/openvpn/ssl_openssl.c index adf3ae6f..6782a953 100644 --- a/app/openvpn/src/openvpn/ssl_openssl.c +++ b/app/openvpn/src/openvpn/ssl_openssl.c @@ -184,15 +184,23 @@ tls_ctx_set_options (struct tls_root_ctx *ctx, unsigned int ssl_flags) /* process SSL options including minimum TLS version we will accept from peer */ { long sslopt = SSL_OP_SINGLE_DH_USE | SSL_OP_NO_TICKET | SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3; - const int tls_version_min = (ssl_flags >> SSLF_TLS_VERSION_SHIFT) & SSLF_TLS_VERSION_MASK; - if (tls_version_min > TLS_VER_1_0) + int tls_ver_max = TLS_VER_UNSPEC; + const int tls_ver_min = + (ssl_flags >> SSLF_TLS_VERSION_MIN_SHIFT) & SSLF_TLS_VERSION_MIN_MASK; + + tls_ver_max = + (ssl_flags >> SSLF_TLS_VERSION_MAX_SHIFT) & SSLF_TLS_VERSION_MAX_MASK; + if (tls_ver_max <= TLS_VER_UNSPEC) + tls_ver_max = tls_version_max(); + + if (tls_ver_min > TLS_VER_1_0 || tls_ver_max < TLS_VER_1_0) sslopt |= SSL_OP_NO_TLSv1; #ifdef SSL_OP_NO_TLSv1_1 - if (tls_version_min > TLS_VER_1_1) + if (tls_ver_min > TLS_VER_1_1 || tls_ver_max < TLS_VER_1_1) sslopt |= SSL_OP_NO_TLSv1_1; #endif #ifdef SSL_OP_NO_TLSv1_2 - if (tls_version_min > TLS_VER_1_2) + if (tls_ver_min > TLS_VER_1_2 || tls_ver_max < TLS_VER_1_2) sslopt |= SSL_OP_NO_TLSv1_2; #endif SSL_CTX_set_options (ctx->ctx, sslopt); |