Ruby patch for OpenSSL without SSLv3 support https://github.com/ruby/ruby/commit/801e1fe46d83c856844ba18ae4751478c59af0d1

no-sslv3-patch.diff

diff --git a/ext/openssl/extconf.rb b/ext/openssl/extconf.rb
index 8c04cb5..132d803 100644
--- a/ext/openssl/extconf.rb
+++ b/ext/openssl/extconf.rb
@@ -104,6 +104,9 @@
 have_func("SSLv2_method")
 have_func("SSLv2_server_method")
 have_func("SSLv2_client_method")
+have_func("SSLv3_method")
+have_func("SSLv3_server_method")
+have_func("SSLv3_client_method")
 have_func("TLSv1_1_method")
 have_func("TLSv1_1_server_method")
 have_func("TLSv1_1_client_method")
diff --git a/ext/openssl/ossl_ssl.c b/ext/openssl/ossl_ssl.c
index f7cb7f0..47111f6 100644
--- a/ext/openssl/ossl_ssl.c
+++ b/ext/openssl/ossl_ssl.c
@@ -109,9 +109,12 @@ static const struct {
     OSSL_SSL_METHOD_ENTRY(SSLv2_server),
     OSSL_SSL_METHOD_ENTRY(SSLv2_client),
 #endif
+#if defined(HAVE_SSLV3_METHOD) && defined(HAVE_SSLV3_SERVER_METHOD) && \
+        defined(HAVE_SSLV3_CLIENT_METHOD)
     OSSL_SSL_METHOD_ENTRY(SSLv3),
     OSSL_SSL_METHOD_ENTRY(SSLv3_server),
     OSSL_SSL_METHOD_ENTRY(SSLv3_client),
+#endif
     OSSL_SSL_METHOD_ENTRY(SSLv23),
     OSSL_SSL_METHOD_ENTRY(SSLv23_server),
     OSSL_SSL_METHOD_ENTRY(SSLv23_client),

If you're using rvm, you can use this command: rvm install [version] --patch https://gist.github.com/mislav/055441129184a1512bb5.txt