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mariadb/mysql-test/main/tlsv13.result

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ssl_cipher parameter cannot configure TLSv1.3 and TLSv1.2 ciphers at the same time SSL_CTX_set_ciphersuites() sets the TLSv1.3 cipher suites. SSL_CTX_set_cipher_list() sets the ciphers for TLSv1.2 and below. The current TLS configuration logic will not perform SSL_CTX_set_cipher_list() to configure TLSv1.2 ciphers if the call to SSL_CTX_set_ciphersuites() was successful. The call to SSL_CTX_set_ciphersuites() is successful if any TLSv1.3 cipher suite is passed into `--ssl-cipher`. This is a potential security vulnerability because users trying to restrict specific secure ciphers for TLSv1.3 and TLSv1.2, would unknowingly still have the database support insecure TLSv1.2 ciphers. For example: If setting `--ssl_cipher=TLS_AES_128_GCM_SHA256:ECDHE-RSA-AES128-GCM-SHA256`, the database would still support all possible TLSv1.2 ciphers rather than only ECDHE-RSA-AES128-GCM-SHA256. The solution is to execute both SSL_CTX_set_ciphersuites() and SSL_CTX_set_cipher_list() even if the first call succeeds. This allows the configuration of exactly which TLSv1.3 and TLSv1.2 ciphers to support. Note that there is 1 behavior change with this. When specifying only TLSv1.3 ciphers to `--ssl-cipher`, the database will not support any TLSv1.2 cipher. However, this does not impose a security risk and considering TLSv1.3 is the modern protocol, this behavior should be fine. All TLSv1.3 ciphers are still supported if only TLSv1.2 ciphers are specified through `--ssl-cipher`. All new code of the whole pull request, including one or several files that are either new files or modified ones, are contributed under the BSD-new license. I am contributing on behalf of my employer Amazon Web Services, Inc.
2024-09-04 00:58:59 +00:00
# restart: --ssl-cipher=TLS_AES_128_GCM_SHA256:ECDHE-RSA-AES256-GCM-SHA384
Variable_name Value
Ssl_cipher TLS_AES_128_GCM_SHA256
Ssl_cipher_list TLS_AES_128_GCM_SHA256:ECDHE-RSA-AES256-GCM-SHA384
Variable_name Value
Ssl_cipher ECDHE-RSA-AES256-GCM-SHA384
Ssl_cipher_list TLS_AES_128_GCM_SHA256:ECDHE-RSA-AES256-GCM-SHA384
ERROR 2026 (HY000): TLS/SSL error: ssl/tls alert handshake failure
ERROR 2026 (HY000): TLS/SSL error: ssl/tls alert handshake failure
# restart: --ssl-cipher=ECDHE-RSA-AES256-GCM-SHA384
Variable_name Value
Ssl_cipher TLS_AES_128_GCM_SHA256
Variable_name Value
Ssl_cipher ECDHE-RSA-AES256-GCM-SHA384
# restart: --ssl-cipher=TLS_AES_128_GCM_SHA256
Variable_name Value
Ssl_cipher TLS_AES_128_GCM_SHA256
Ssl_cipher_list TLS_AES_128_GCM_SHA256
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