Opened 2 years ago

Last modified 2 years ago

#2305 closed defect

ssl_protocols directive in server { } doesn't work — at Version 2

Reported by: Erictoby@… Owned by:
Priority: minor Milestone:
Component: nginx-core Version: 1.19.x
Keywords: ssl_protocols Cc:
uname -a: Linux ericlinux 5.11.0-1025-oracle #27~20.04.1-Ubuntu SMP Fri Jan 7 18:58:08 UTC 2022 aarch64 aarch64 aarch64 GNU/Linux
nginx -V: nginx version: nginx/1.20.2
built by gcc 9.3.0 (Ubuntu 9.3.0-10ubuntu2)
built with OpenSSL 1.1.1f 31 Mar 2020
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fdebug-prefix-map=/data/builder/debuild/nginx-1.20.2/debian/debuild-base/nginx-1.20.2=. -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie'

Description (last modified by Erictoby@…)

"ssl_protocols" could be located either in http { } or in server { } in /etc/nginx/nginx.conf. It, however, doesn't work anymore in server { }.

version 1.19.4 : work either in http { } or in server { }
version 1.20.2 : only work in http { }
version 1.21.5 : only work in http { }

Example)

http {
    ssl_protocols TLSv1.1 TLSv1.2;
    server {
        ssl_protocols TLSv1.2 TLSv1.3;
    }
}

==> TLS 1.1 & TLS 1.2 work, but TLS 1.3 doesn't work.

http {
    server {
        ssl_protocols TLSv1.2 TLSv1.3;
    }
}

==> TLS 1.2 work, but TLS 1.3 doesn't work.

http {
    ssl_protocols TLSv1.2 TLSv1.3;
    server {
    }
}

==> TLS 1.2 & TLS 1.3 work;

Change History (2)

comment:1 by Maxim Dounin, 2 years ago

Could you please show exact self-contained configuration which demonstrate the problem? Depending on the exact configuration, most like it is either duplicate of #676 (ssl_protocols cannot be used in name-based virtual servers, configuration from the default server applies) or #2071 (due to a bug OpenSSL disables TLSv1.3 if no certificates are specified in the default server block, fixed in OpenSSL 1.1.1j).

comment:2 by Erictoby@…, 2 years ago

Description: modified (diff)

I was confused because it didn't work since I upgraded nginx to 1.20.2(or 1.21.5-quic in other server) from 1.19.4 with all the *.conf same. But, I found it's already discussed in the ticket #2101, #2071 (thanks Maxim).

ssl_protocols should be in http{} or in server{} with "default_server" since 1.19.6+.

Now, I did quick test again with 1.21.5 with BoringSSL(current version as of today). Result: ssl_protocols in default server{} block works. ssl_protocols in non-default server{} block doesn't work.

If this is the permanent case, updating the documentation may help us. For example, ​http://nginx.org/en/docs/http/configuring_https_servers.html.

Thanks.

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