Versie 5.0 van Suricata is onlangs uitgekomen. Suricata is een opensource-network intrusion detection system (IDS), intrusion prevention system (IPS) en network security monitoring engine. Het kan worden gebruikt om netwerkverkeer te monitoren en een systeembeheerder een waarschuwing te geven als er iets verdachts wordt gesignaleerd. De Open Information Security Foundation coördineert de ontwikkeling, met hulp van de community en diverse fabrikanten. De met het op json gebaseerd logsysteem Eve verzamelde data kan onder meer met Logstash worden gebruikt om zo informatie grafisch weer te geven. De belangrijkste veranderingen die in versie 5.0 zijn aangebracht zijn hieronder voor je op een rijtje gezet.
RDP, SNMP, FTP and SIPThree new protocol parsers and loggers, all community contributions. Zach Kelly created a Rust RDP parser, while Giuseppe Longo created SIP support. Rust master Pierre Chifflier contributed SNMP support. Since RDP and SIP were merged late in our development cycle they are disabled by default in the configuration. For FTP we have added an EVE logging facility.
JA3SAfter contributing JA3 support in Suricata 4.1, Mats Klepsland has been working on JA3S support. JA3S is now available to the rule language and in the TLS logging output.
DatasetsStill experimental at this time, the initial work to support datasets is part of this release. It allows matching on large amounts of data. It is controlled from the rule language and will work with any ‘sticky buffer’.
Documentation
See documentation at https://suricata.readthedocs.io/en/suricata-5.0.0/rules/datasets.html
We’ve already heard of people using this with millions of IOCs.With the help of many community members we’ve been improving the user documentation. Please see: https://suricata.readthedocs.io/en/suricata-5.0.0/
HTTP evaderWe’ve been working hard to cover the final set of HTTP evader cases. This work has mostly gone into the bundled libhtp 0.5.31.
RustThe most visible is that our Rust support is no longer optional. We’re convinced that Rust is a perfect match for Suricata, and we plan to increase its footprint in our code base steadily. By making it mandatory we’re able to remove parallel implementations and focus fully on making the Rust code better.
Protocol DetectionThe protocol detection engine has been extended to provide better accuracy as well as support for dealing with asynchronous flows. These async flows are sometimes picked up in the wrong direction and the protocol detection engine can now reverse them.
Decoder Anomaly records in EVEA new log record type has been added: ‘anomaly’. This logs the stream and decoder events that are set by the packet decoders. This is inspired by Zeeks (Bro) ‘weird’ log.
EVE improvementsVLAN and capture interface is now part of many more EVE records, even if they are flow records or records based on flow time out.
An option to log all HTTP headers to the EVE http records has been added.
Packet CaptureEric Leblond has been working hard to getting hardware offload support working for eBPF. On Netronome cards the eBPF based flow bypass can now be offloaded to the NIC. As eBPF is becoming a standard in the Linux space, we are hoping to see other hardware offload soon as well.
Rule language: Sticky Buffers
Netmap support has been rewritten so the more advanced features of netmap, such as vale switches, can be used now.
Napatech usability has been improved.As discussed at the Suricon 2018 brainstorm session, a new rule keyword scheme is being introduced. It takes the existing ‘sticky buffer’ approach with new keyword names to avoid confusion. The new scheme is <proto>.<buffer>, so for example ‘http.uri’ for the URI inspection.
Python 3
A number of HTTP keywords have been added.
Unified Lua inspection mixed with the sticky buffers has also been implemented.With Python 2’s EOL approaching, we’ve made sure that all Suricata’s python code is Python 3 compliant.
RemovalsFollowing our deprecation policy, we have removed the following parts: the plain text dns.log, the old files-json.log and support for the Tilera architecture.
All tickets
https://suricata-ids.org/about/deprecation-policy/Beta 1 tickets: https://redmine.openinfosecfoundation.org/versions/115
RC 1 tickets: https://redmine.openinfosecfoundation.org/versions/128
Final tickets: https://redmine.openinfosecfoundation.org/versions/129
Logstash Kibana gevoed met informatie van Suricata met json-output.
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