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Change SSL certificate file list to OpenSSL builtin load_verify_location

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Specifying SSL certificates for peer verification does an exact match,
making it a not-so-obvious alias for the fingerprints option. This
changes the checks to OpenSSL which loads concatenated certificate(s)
from a single file and does a certificate-authority (chain of trust)
check instead. There is no drop in security - a compromised exact match
fingerprint has the same worse case failure. There is increased security
in allowing separate long-term CA key and short-term SSL server keys.

This also removes loading of the system-default CA files if a custom
CA file or certificate fingerprint is specified.
This commit is contained in:
Lee Clagett 2019-03-11 22:01:03 -04:00
parent 5dbcceb664
commit a3b0284837
13 changed files with 92 additions and 134 deletions
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8
contrib/epee/include/net/abstract_tcp_server2.inl
View file

@ -941,14 +941,14 @@ PRAGMA_WARNING_DISABLE_VS(4355)
}
//---------------------------------------------------------------------------------
template<class t_protocol_handler>
bool boosted_tcp_server<t_protocol_handler>::init_server(uint32_t port, const std::string address, epee::net_utils::ssl_support_t ssl_support, const std::pair<std::string, std::string> &private_key_and_certificate_path, const std::list<std::string> &allowed_certificates, const std::vector<std::vector<uint8_t>> &allowed_fingerprints, bool allow_any_cert)
bool boosted_tcp_server<t_protocol_handler>::init_server(uint32_t port, const std::string address, epee::net_utils::ssl_support_t ssl_support, const std::pair<std::string, std::string> &private_key_and_certificate_path, const std::string &ca_file, const std::vector<std::vector<uint8_t>> &allowed_fingerprints, bool allow_any_cert)
{
TRY_ENTRY();
m_stop_signal_sent = false;
m_port = port;
m_address = address;
if (ssl_support != epee::net_utils::ssl_support_t::e_ssl_support_disabled)
m_ssl_context = create_ssl_context(private_key_and_certificate_path, allowed_certificates, allowed_fingerprints, allow_any_cert);
m_ssl_context = create_ssl_context(private_key_and_certificate_path, ca_file, allowed_fingerprints, allow_any_cert);
// Open the acceptor with the option to reuse the address (i.e. SO_REUSEADDR).
boost::asio::ip::tcp::resolver resolver(io_service_);
boost::asio::ip::tcp::resolver::query query(address, boost::lexical_cast<std::string>(port), boost::asio::ip::tcp::resolver::query::canonical_name);
@ -982,7 +982,7 @@ PRAGMA_WARNING_DISABLE_VS(4355)
PUSH_WARNINGS
DISABLE_GCC_WARNING(maybe-uninitialized)
template<class t_protocol_handler>
bool boosted_tcp_server<t_protocol_handler>::init_server(const std::string port, const std::string& address, epee::net_utils::ssl_support_t ssl_support, const std::pair<std::string, std::string> &private_key_and_certificate_path, const std::list<std::string> &allowed_certificates, const std::vector<std::vector<uint8_t>> &allowed_fingerprints, bool allow_any_cert)
bool boosted_tcp_server<t_protocol_handler>::init_server(const std::string port, const std::string& address, epee::net_utils::ssl_support_t ssl_support, const std::pair<std::string, std::string> &private_key_and_certificate_path, const std::string &ca_file, const std::vector<std::vector<uint8_t>> &allowed_fingerprints, bool allow_any_cert)
{
uint32_t p = 0;
@ -990,7 +990,7 @@ DISABLE_GCC_WARNING(maybe-uninitialized)
MERROR("Failed to convert port no = " << port);
return false;
}
return this->init_server(p, address, ssl_support, private_key_and_certificate_path, allowed_certificates, allowed_fingerprints, allow_any_cert);
return this->init_server(p, address, ssl_support, private_key_and_certificate_path, ca_file, allowed_fingerprints, allow_any_cert);
}
POP_WARNINGS
//---------------------------------------------------------------------------------