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SSL: disabled TLSv1 and TLSv1.1 by default.

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TLSv1 and TLSv1.1 are formally deprecated and forbidden to negotiate due
to insufficient security reasons outlined in RFC 8996.

TLSv1 and TLSv1.1 are disabled in BoringSSL e95b0cad9 and LibreSSL 3.8.1
in the way they cannot be enabled in nginx configuration.  In OpenSSL 3.0,
they are only permitted at security level 0 (disabled by default).

The support is dropped in Chrome 84, Firefox 78, and deprecated in Safari.

This change disables TLSv1 and TLSv1.1 by default for OpenSSL 1.0.1 and
newer, where TLSv1.2 support is available.  For older library versions,
which do not have alternatives, these protocol versions remain enabled.
This commit is contained in:
Sergey Kandaurov 2024-10-09 20:28:00 +04:00 committed by pluknet
parent f45c2707ea
commit ebd18ec181
7 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/http/modules/ngx_http_grpc_module.c
View File

@ -4477,7 +4477,9 @@ ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers,

2
src/http/modules/ngx_http_proxy_module.c
View File

@ -3944,7 +3944,9 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers,

2
src/http/modules/ngx_http_ssl_module.c
View File

@ -653,7 +653,9 @@ ngx_http_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_size_value(conf->buffer_size, prev->buffer_size,

2
src/http/modules/ngx_http_uwsgi_module.c
View File

@ -1879,7 +1879,9 @@ ngx_http_uwsgi_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers,

2
src/mail/ngx_mail_ssl_module.c
View File

@ -345,7 +345,9 @@ ngx_mail_ssl_merge_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_uint_value(conf->verify, prev->verify, 0);

2
src/stream/ngx_stream_proxy_module.c
View File

@ -2164,7 +2164,9 @@ ngx_stream_proxy_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, "DEFAULT");

2
src/stream/ngx_stream_ssl_module.c
View File

@ -884,7 +884,9 @@ ngx_stream_ssl_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
ngx_conf_merge_bitmask_value(conf->protocols, prev->protocols,
(NGX_CONF_BITMASK_SET
#ifndef SSL_OP_NO_TLSv1_2
|NGX_SSL_TLSv1|NGX_SSL_TLSv1_1
#endif
|NGX_SSL_TLSv1_2|NGX_SSL_TLSv1_3));
ngx_conf_merge_uint_value(conf->verify, prev->verify, 0);