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SSL Research with Bro Johanna Amann International Computer Science - PowerPoint PPT Presentation

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SSL Research with Bro Johanna Amann International Computer Science Institute johanna@icir.org http://www.icir.org/johanna Bro History Academic Host Context Time Machine Publications Summary Stats Enterprise Traffic HILTI DPI Concurrency

  1. SSL Research with Bro Johanna Amann International Computer Science Institute johanna@icir.org http://www.icir.org/johanna

  2. Bro History Academic Host Context Time Machine Publications Summary Stats Enterprise Traffic HILTI DPI Concurrency Tor SSL PLC Modeling OCSP Speed TRW 
 Android Root Certs Certificate Ecosystem State Mgmt. Heart bleed TLS Electronic Comm. Bro Cluster 
 Independ. State Spicy Shunt Certificate 
 NetControl Transparency Parallel Prototype Input Framework VAST Anonymizer 
 Active Mapping BinPAC Context Signat. Backdoors Stepping DPD SSL Trust USENIX Paper Stones Autotuning 2nd Path SSL Errors 2016 2016 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2015 2014 v2.4 Broker, Plugins, v2.2 OCSP, SCT, 
 DTLS/KRB File Analysis v2.0 ERSPAN Vern writes Summary Stats v0.7a90 v1.5 User Experience v0.2 v0.8aX/0.9aX 
 v2.5, 1st line of v0.6 Profiling BroControl 1st CHANGES SSL/SMB SMB, NetControl, code RegExps v1.1/v1.2 State Mgmt entry STABLE releases VNC, StartTLS Login analysis when Stmt BroLite v2.1 Resource tuning v2.3 IPv6 Bro SDCI Broccoli Performance Input Framew. DPD SNMP, Radius, SSL++ v1.4 v0.4 
 v0.7a175/0.8aX v1.0 LBNL starts using Bro DHCP/BitTorrent HTTP analysis Signatures Bro Center BinPAC operationally HTTP entities Scan detector SMTP IRC/RPC analyzers NetFlow IP fragments 
 IPv6 support 64-bit support Bro Lite Deprecated Linux support User manual Sane version numbers v1.3 v0.7a48 0.8a37 Ctor expressions Communication Consistent CHANGES GeoIP Persistence Conn Compressor Namespaces Log Rotation

  3. Bro SSL - v1.5.3 Client Server ? Client hello Server hello Certificate ssl_certificate_seen ssl_certificate (Server Key Exchg) ssl_conn_attempt ssl_conn_alert Client Key Exchange ssl_conn_server_reply ssl_conn_weak Change Cipher Spec ssl_conn_established ssl_session_insertion Finished ssl_conn_reused process_X509_extensions Change Cipher Spec ssl_X509_error Finished Encrypted application data

  4. Bro SSL Events - v2.0 to 2.2 client_hello server_hello ssl_session_ticket_handshake ssl_established x509_certificate ssl_extension ssl_alert

  5. Bro SSL Events - v2.3 client_hello server_hello ssl_session_ticket_handshake ssl_established x509_certificate ssl_extension ssl_alert

  6. Bro SSL Events - v2.3 client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve

  7. Bro SSL Events - v2.4 client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve

  8. Bro SSL Events - v2.5 client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve

  9. Bro SSL Events - v2.5 client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve ssl_extension_signature_algorithm

  10. Bro SSL Events - v2.5 Completely working DTLS support client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension More StartTLS ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name TLS 1.3 support x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve ssl_extension_signature_algorithm

  11. Bro SSL Events - master client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve ssl_extension_signature_algorithm

  12. Bro SSL Events - master client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve ssl_extension_signature_algorithm x509_ocsp_ext_signed_certificate_timestamp ssl_extension_supported_versions ssl_extension_psk_key_exchange_modes ssl_extension_signed_certificate_timestamp ocsp_request ocsp_request_certificate ocsp_response_status ocsp_response_bytes ocsp_response_certificate ocsp_extension

  13. Bro SSL Events - master client_hello ssl_stapled_ocsp ssl_change_cipher_spec server_hello ssl_encrypted_data x509_extension ssl_session_ticket_handshake ssl_dh_server_params x509_ext_basic_constraints OCSP support ssl_established ssl_change_cipher_spec x509_ext_subject_alternative_name SCT Support (Certificate Transparency) x509_certificate ssl_handshake_message ssl_extension_elliptic_curves ssl_extension ssl_encrypted_data ssl_extension_application_layer_protocol_negotiation TLS 1.3 extensions ssl_alert ssl_extension_ex_point_formats ssl_extension_server_name ssl_server_curve ssl_extension_signature_algorithm x509_ocsp_ext_signed_certificate_timestamp ssl_extension_supported_versions ssl_extension_psk_key_exchange_modes ssl_extension_signed_certificate_timestamp ocsp_request ocsp_request_certificate ocsp_response_status ocsp_response_bytes ocsp_response_certificate ocsp_extension

  14. TLS 1.3 ts 1505018739.255782 id.resp_h 104.19.196.102 version TLSv13-draft18 cipher TLS_AES_128_GCM_SHA256 curve x25519 server_name tls13.cloudflare.com established T cert_chain_fuids - client_cert_chain_fuids - subject - issuer -

  15. OCSP HTTPS OCSP Server Server client hello server hello OCSP request More handshake messages OCSP reply Application data Measuring the Latency and Pervasiveness of TLS Certificate Revocation L. Zhu, J. Amann, J. Heidemann, PAM 2016

  16. @load files/x509/log-ocsp ts 1438374033.033189 id FVty9v3KTnCvbg0Xf2 hashAlgorithm sha1 issuerNameHash 74241467069FF5E0983F5E3E1A6BA0652A541575 issuerKeyHash 0159ABE7DD3A0B59A66463D6CF200757D591E76A serialNumber 017447CB30072EE15B9C1B057B731C5A certStatus revoked revoketime 1421494379.000000 revokereason keyCompromise thisUpdate 1436321024.000000 nextUpdate 1443459307.000000

  17. Certificate Transparency CT Log CA Webserver Browser

  18. Certificate Transparency CT Log CA Certificate Webserver Browser

  19. Certificate Transparency CT Log CA Certificate Certificate Webserver Browser

  20. Certificate Transparency CT Log CA Certificate Certificate SCT Webserver Browser

  21. Certificate Transparency CT Log CA Certificate Certificate SCT Webserver Browser Certificate, SCT in TLS Ext.

  22. Certificate Transparency CT Log CA Webserver Browser

  23. Certificate Transparency Precertificate CT Log CA Webserver Browser

  24. Certificate Transparency Precertificate CT Log CA SCT Webserver Browser

  25. Certificate Transparency Precertificate CT Log CA SCT Certificate (with 
 Precertificate SCT) Webserver Browser

  26. Certificate Transparency Precertificate CT Log CA SCT Certificate (with 
 Precertificate SCT) Webserver Browser Certificate. Transform, Validate

  27. Certificate Transparency CT Log CA Webserver Browser

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