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80 lines
2.9 KiB
80 lines
2.9 KiB
diff -urN a/parseconf.c b/parseconf.c
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--- a/parseconf.c 2021-05-29 23:39:19.000000000 +0200
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+++ b/parseconf.c 2023-03-03 10:22:38.256439634 +0100
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@@ -185,6 +185,7 @@
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{ "dsa_cert_file", &tunable_dsa_cert_file },
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{ "dh_param_file", &tunable_dh_param_file },
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{ "ecdh_param_file", &tunable_ecdh_param_file },
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+ { "ssl_ciphersuites", &tunable_ssl_ciphersuites },
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{ "ssl_ciphers", &tunable_ssl_ciphers },
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{ "rsa_private_key_file", &tunable_rsa_private_key_file },
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{ "dsa_private_key_file", &tunable_dsa_private_key_file },
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diff -urN a/ssl.c b/ssl.c
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--- a/ssl.c 2021-08-02 08:24:35.000000000 +0200
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+++ b/ssl.c 2023-03-03 10:28:05.989757655 +0100
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@@ -135,6 +135,11 @@
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{
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die("SSL: could not set cipher list");
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}
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+ if (tunable_ssl_ciphersuites &&
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+ SSL_CTX_set_ciphersuites(p_ctx, tunable_ssl_ciphersuites) != 1)
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+ {
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+ die("SSL: could not set ciphersuites");
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+ }
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if (RAND_status() != 1)
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{
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die("SSL: RNG is not seeded");
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diff -urN a/tunables.c b/tunables.c
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--- a/tunables.c 2021-05-29 23:39:00.000000000 +0200
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+++ b/tunables.c 2023-03-03 10:13:30.566868026 +0100
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@@ -154,6 +154,7 @@
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const char* tunable_dsa_cert_file;
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const char* tunable_dh_param_file;
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const char* tunable_ecdh_param_file;
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const char* tunable_ssl_ciphers;
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+const char* tunable_ssl_ciphersuites;
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const char* tunable_rsa_private_key_file;
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const char* tunable_dsa_private_key_file;
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@@ -293,6 +293,7 @@
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install_str_setting(0, &tunable_dh_param_file);
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install_str_setting(0, &tunable_ecdh_param_file);
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install_str_setting("PROFILE=SYSTEM", &tunable_ssl_ciphers);
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+ install_str_setting("TLS_AES_256_GCM_SHA384", &tunable_ssl_ciphersuites);
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install_str_setting(0, &tunable_rsa_private_key_file);
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install_str_setting(0, &tunable_dsa_private_key_file);
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install_str_setting(0, &tunable_ca_certs_file);
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diff -urN a/tunables.h b/tunables.h
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--- a/tunables.h
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+++ b/tunables.h
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@@ -144,6 +144,7 @@
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extern const char* tunable_dsa_cert_file;
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extern const char* tunable_dh_param_file;
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extern const char* tunable_ecdh_param_file;
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extern const char* tunable_ssl_ciphers;
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+extern const char* tunable_ssl_ciphersuites;
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extern const char* tunable_rsa_private_key_file;
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extern const char* tunable_dsa_private_key_file;
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--- a/vsftpd.conf.5
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+++ b/vsftpd.conf.5
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@@ -1009,6 +1009,20 @@
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Default: PROFILE=SYSTEM
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.TP
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+.B ssl_ciphersuites
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+This option can be used to select which SSL cipher suites vsftpd will allow for
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+encrypted SSL connections with TLSv1.3. See the
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+.BR ciphers
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+man page for further details. Note that restricting ciphers can be a useful
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+security precaution as it prevents malicious remote parties forcing a cipher
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+which they have found problems with.
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+
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+By default, the system-wide crypto policy is used. See
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+.BR update-crypto-policies(8)
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+for further details.
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+
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+Default: TLS_AES_256_GCM_SHA384
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+.TP
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.B ssl_sni_hostname
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If set, SSL connections will be rejected unless the SNI hostname in the
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incoming handshakes matches this value.
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