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libratbox/openssl: Set explicit cipher list for the client context aswell

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This is in furtherance of commits 9799bea4 and 1f384464 and addresses
any potential vulnerability to LogJam <https://weakdh.org/>
This commit is contained in:
Aaron Jones 2015-05-20 16:41:34 +00:00
parent c86f11da1c
commit cb266283f8
1 changed files with 4 additions and 1 deletions
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5
libratbox/src/openssl.c
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@ -302,6 +302,7 @@ rb_init_ssl(void)
{
int ret = 1;
char libratbox_data[] = "libratbox data";
const char libratbox_ciphers[] = "kEECDH+HIGH:kEDH+HIGH:HIGH:!RC4:!aNULL";
SSL_load_error_strings();
SSL_library_init();
libratbox_index = SSL_get_ex_new_index(0, libratbox_data, NULL, NULL, NULL);
@ -343,7 +344,7 @@ rb_init_ssl(void)
SSL_CTX_set_options(ssl_server_ctx, server_options);
SSL_CTX_set_verify(ssl_server_ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, verify_accept_all_cb);
SSL_CTX_set_session_cache_mode(ssl_server_ctx, SSL_SESS_CACHE_OFF);
SSL_CTX_set_cipher_list(ssl_server_ctx, "kEECDH+HIGH:kEDH+HIGH:HIGH:!RC4:!aNULL");
SSL_CTX_set_cipher_list(ssl_server_ctx, libratbox_ciphers);
/* Set ECDHE on OpenSSL 1.00+, but make sure it's actually available because redhat are dicks
and bastardise their OpenSSL for stupid reasons... */
@ -372,6 +373,8 @@ rb_init_ssl(void)
SSL_CTX_set_options(ssl_client_ctx, SSL_OP_NO_TICKET);
#endif
SSL_CTX_set_cipher_list(ssl_client_ctx, libratbox_ciphers);
return ret;
}