{"id":38972,"date":"2019-10-31T22:27:08","date_gmt":"2019-10-31T19:27:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/dostupna-sistema-obnaruzheniya-atak-suricata-5-0\/"},"modified":"2019-10-31T22:27:08","modified_gmt":"2019-10-31T19:27:08","slug":"dostupna-sistema-obnaruzheniya-atak-suricata-5-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/dostupna-sistema-obnaruzheniya-atak-suricata-5-0","title":{"rendered":"El\u00e9rhet\u0151 a Suricata 5.0 t\u00e1mad\u00e1s\u00e9szlel\u0151 rendszer","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>OISF (Ny\u00edlt Inform\u00e1ci\u00f3biztons\u00e1gi Alap\u00edtv\u00e1ny) szervezet <noindex><a rel=\"nofollow\" href=\"https:\/\/suricata-ids.org\/2019\/10\/15\/announcing-suricata-5-0-0\/\">kiadta<\/a><\/noindex> kiadta a h\u00e1l\u00f3zati behatol\u00e1s \u00e9szlel\u0151 \u00e9s megel\u0151z\u0151 rendszert <noindex><a rel=\"nofollow\" href=\"http:\/\/suricata-ids.org\/\">Suricata 5.0<\/a><\/noindex>, amely k\u00fcl\u00f6nb\u00f6z\u0151 t\u00edpus\u00fa forgalom ellen\u0151rz\u00e9s\u00e9re szolg\u00e1l\u00f3 eszk\u00f6z\u00f6ket biztos\u00edt. A Suricata konfigur\u00e1ci\u00f3kban megengedett <noindex><a rel=\"nofollow\" href=\"http:\/\/www.snort.org\/vrt\">ujjlenyomat-adatb\u00e1zis<\/a><\/noindex>, amelyet a Snort projekt fejleszt, \u00e9s a szab\u00e1lyk\u00e9szletek <noindex><a rel=\"nofollow\" href=\"http:\/\/rules.emergingthreats.net\/\">Emerging Threats<\/a><\/noindex> \u00e9s <noindex><a rel=\"nofollow\" href=\"http:\/\/rules.emergingthreatspro.com\/\">Emerging Threats Pro<\/a><\/noindex>. A projekt forr\u00e1sk\u00f3dja <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/OISF\/suricata\">szabadon terjeszthet\u0151k<\/a><\/noindex> GPLv2 licenc alatt. <\/p>\n<p>F\u0151bb v\u00e1ltoz\u00e1sok:\n<\/p>\n<ul>\n<li class=\"l\"> \u00daj elemz\u0151 \u00e9s napl\u00f3z\u00e1si modulok bemutat\u00e1sa a k\u00f6vetkez\u0151 protokollokhoz<br \/>\nRDP, SNMP \u00e9s SIP, Rust nyelven \u00edrva. Az FTP elemz\u0151 modulhoz hozz\u00e1adva a napl\u00f3z\u00e1s lehet\u0151s\u00e9ge az EVE alrendszeren kereszt\u00fcl, amely JSON form\u00e1tumban adja meg az esem\u00e9nyeket;<\/p>\n<li class=\"l\"> A m\u00falt heti kiad\u00e1sban megjelent JA3 TLS-kliens azonos\u00edt\u00f3 m\u00f3dszer t\u00e1mogat\u00e1sa mellett most hozz\u00e1adva a t\u00e1mogat\u00e1s a <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/salesforce\/ja3\">JA3S<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/engineering.salesforce.com\/tls-fingerprinting-with-ja3-and-ja3s-247362855967\">amely lehet\u0151v\u00e9 teszi<\/a><\/noindex> A csatlakoz\u00e1sok egyeztet\u00e9se \u00e9s a megadott param\u00e9terek alapj\u00e1n meghat\u00e1rozhat\u00f3, hogy milyen szoftver haszn\u00e1latos a kapcsolat telep\u00edt\u00e9s\u00e9hez (p\u00e9ld\u00e1ul lehet\u0151v\u00e9 teszi a Tor \u00e9s m\u00e1s tipikus alkalmaz\u00e1sok \u00e9szlel\u00e9s\u00e9t). A JA3 lehet\u0151s\u00e9get ad az \u00fcgyfelek azonos\u00edt\u00e1s\u00e1ra, m\u00edg a JA3S a szerverekre. Az azonos\u00edt\u00e1s eredm\u00e9nyei felhaszn\u00e1lhat\u00f3k a szab\u00e1lyok megad\u00e1si nyelv\u00e9ben \u00e9s a napl\u00f3kban.\n<li class=\"l\"> Hozz\u00e1adva egy k\u00eds\u00e9rleti lehet\u0151s\u00e9get a nagy adathalmazok mint\u00e1inak egyeztet\u00e9s\u00e9re, amelyet az \u00faj  <noindex><a rel=\"nofollow\" href=\"https:\/\/suricata.readthedocs.io\/en\/suricata-5.0.0\/rules\/datasets.html\">dataset \u00e9s datarep<\/a><\/noindex>m\u0171veletek seg\u00edts\u00e9g\u00e9vel val\u00f3s\u00edtanak meg. P\u00e9ld\u00e1ul, a lehet\u0151s\u00e9g alkalmazhat\u00f3 maszkok keres\u00e9s\u00e9re nagy fekete list\u00e1kban, amelyek milli\u00f3 bejegyz\u00e9st tartalmaznak;\n<li class=\"l\"> HTTP-inspektor m\u00f3dban teljes k\u00f6r\u0171 lefedetts\u00e9get biztos\u00edt minden olyan helyzetre, amelyet a tesztk\u00e9szlet <noindex><a rel=\"nofollow\" href=\"https:\/\/noxxi.de\/research\/http-evader.html\">HTTP Evader<\/a><\/noindex> (p\u00e9ld\u00e1ul lefedi a forgalomban rejtett rosszindulat\u00fa tev\u00e9kenys\u00e9gre vonatkoz\u00f3 m\u00f3dszereket) le\u00edr;\n<li class=\"l\"> A Rust nyelven \u00edrt modulok fejleszt\u00e9s\u00e9nek eszk\u00f6zei k\u00f6telez\u0151 be\u00e9p\u00edtett funkci\u00f3kk\u00e1 v\u00e1ltak. A j\u00f6v\u0151ben a Rust alkalmaz\u00e1s\u00e1nak b\u0151v\u00edt\u00e9se \u00e9s a modulok fokozatos cser\u00e9je Rust-ra \u00edrt anal\u00f3gokra v\u00e1rhat\u00f3;\n<li class=\"l\"> A protokollok azonos\u00edt\u00f3 motorj\u00e1nak fejleszt\u00e9se a pontoss\u00e1g \u00e9s az aszinkron forgalomfeldolgoz\u00e1s ter\u00e9n javult;\n<li class=\"l\"> Az EVE napl\u00f3hoz hozz\u00e1adva a \u201eanomaly\u201d \u00faj rekordt\u00edpus\u00e1nak t\u00e1mogat\u00e1sa, amelyben a csomagok dek\u00f3dol\u00e1sa sor\u00e1n \u00e9szlelt atipikus esem\u00e9nyek t\u00e1rol\u00f3dnak. Az EVE-ben a VLAN \u00e9s a forgalomelfog\u00f3 fel\u00fcletek inform\u00e1ci\u00f3inak visszat\u00fckr\u00f6z\u00e9s\u00e9t is b\u0151v\u00edtett\u00e9k. Lehet\u0151v\u00e9 v\u00e1lt az \u00f6sszes HTTP-fejl\u00e9c meg\u0151rz\u00e9se az EVE napl\u00f3 http-rekordjaiban.\n<li class=\"l\"> Az eBPF alap\u00fa kezel\u0151kben t\u00e1mogatj\u00e1k a csomagok elfog\u00e1s\u00e1nak hardveres gyors\u00edt\u00f3 mechanizmusait. A hardveres gyors\u00edt\u00e1s egyel\u0151re a Netronome h\u00e1l\u00f3zati adaptereire korl\u00e1toz\u00f3dik, de hamarosan m\u00e1s eszk\u00f6z\u00f6kre is el\u00e9rhet\u0151 lesz;\n<li class=\"l\"> A k\u00f3d \u00e1t lett \u00edrva a Netmap keretrendszer haszn\u00e1lat\u00e1val t\u00f6rt\u00e9n\u0151 forgalomfog\u00e1s \u00e9rdek\u00e9ben. Lehet\u0151s\u00e9g van a Netmap kiterjesztett funkci\u00f3inak haszn\u00e1lat\u00e1ra, p\u00e9ld\u00e1ul a virtu\u00e1lis kapcsol\u00f3ra. <noindex><a rel=\"nofollow\" href=\"https:\/\/suricata.readthedocs.io\/en\/latest\/capture-hardware\/netmap.html#vale-switches\">VALE<\/a><\/noindex>;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/redmine.openinfosecfoundation.org\/issues\/2283\">Hozz\u00e1adva<\/a><\/noindex> A \u201esticky buffer\u201d-ekhez (Sticky Buffers) kapcsol\u00f3d\u00f3 kulcsszavak \u00faj azonos\u00edt\u00e1si s\u00e9m\u00e1j\u00e1nak t\u00e1mogat\u00e1sa. Az \u00faj s\u00e9ma a k\u00f6vetkez\u0151 form\u00e1tumban van meghat\u00e1rozva: \u201eprotokoll.buffer\u201d, p\u00e9ld\u00e1ul az URI vizsg\u00e1lat\u00e1hoz a kulcssz\u00f3 \u201ehttp.uri\u201d form\u00e1tumban jelenik meg a \u201ehttp_uri\u201d helyett.\n<li class=\"l\"> Az \u00f6sszes haszn\u00e1lt Python k\u00f3d kompatibilit\u00e1sa ellen\u0151rizve lett<br \/>\nPython 3;<\/p>\n<li class=\"l\"> A Tilera architekt\u00fara, a dns.log sz\u00f6veges napl\u00f3 \u00e9s a r\u00e9gi files-json.log napl\u00f3 t\u00e1mogat\u00e1sa le\u00e1llt.\n<\/ul>\n<p>A Suricata jellemz\u0151i:\n<\/p>\n<ul>\n<li class=\"l\"> Az ellen\u0151rz\u00e9si eredm\u00e9nyek megjelen\u00edt\u00e9s\u00e9hez egys\u00e9ges form\u00e1tumot haszn\u00e1lunk <noindex><a rel=\"nofollow\" href=\"http:\/\/searchsecuritychannel.techtarget.com\/tip\/0,289483,sid97_gci1339679,00.html\">Unified2<\/a><\/noindex>, amelyet a Snort projekt is haszn\u00e1l, lehet\u0151v\u00e9 t\u00e9ve ez\u00e1ltal a szabv\u00e1nyos elemz\u00e9si eszk\u00f6z\u00f6k, mint p\u00e9ld\u00e1ul <noindex><a rel=\"nofollow\" href=\"http:\/\/www.securixlive.com\/barnyard2\/index.php\">barnyard2<\/a><\/noindex>. Integr\u00e1ci\u00f3 lehet\u0151s\u00e9ge a BASE, Snorby, Sguil \u00e9s SQueRT term\u00e9kekkel. T\u00e1mogatja a PCAP form\u00e1tumba val\u00f3 kimenetet;\n<\/li>\n<li class=\"l\">  Automatikus protokollmeghat\u00e1roz\u00e1s t\u00e1mogat\u00e1sa (IP, TCP, UDP, ICMP, HTTP, TLS, FTP, SMB stb.), amely lehet\u0151v\u00e9 teszi, hogy a szab\u00e1lyokban csak a protokoll t\u00edpus\u00e1t haszn\u00e1ljuk, portsz\u00e1m k\u00f6t\u0151d\u00e9s n\u00e9lk\u00fcl (p\u00e9ld\u00e1ul a HTTP forgalom blokkol\u00e1sa nem szabv\u00e1nyos porton). HTTP, SSL, TLS, SMB, SMB2, DCERPC, SMTP, FTP \u00e9s SSH protokollok dek\u00f3derjei \u00e1llnak rendelkez\u00e9sre;\n<\/li>\n<li class=\"l\"> Er\u0151teljes HTTP-forgalomelemz\u0151 rendszer, amely a HTTP-forgalom elemz\u00e9s\u00e9re \u00e9s normaliz\u00e1l\u00e1s\u00e1ra a Mod_Security projekt szerz\u0151je \u00e1ltal l\u00e9trehozott HTP k\u00f6nyvt\u00e1rat haszn\u00e1lja. Rendelkez\u00e9sre \u00e1ll egy modul a tranzit HTTP \u00e1tkonfigur\u00e1l\u00e1sok r\u00e9szletes napl\u00f3z\u00e1s\u00e1ra, a napl\u00f3 szabv\u00e1nyos form\u00e1tumban ker\u00fcl ment\u00e9sre.<br \/>\nApache. T\u00e1mogatja a HTTP protokollon kereszt\u00fcl \u00e1tkonfigur\u00e1lt f\u00e1jlok kinyer\u00e9s\u00e9t \u00e9s ellen\u0151rz\u00e9s\u00e9t. T\u00e1mogatja a t\u00f6m\u00f6r\u00edtett tartalom elemz\u00e9s\u00e9t. Lehets\u00e9ges az azonos\u00edt\u00e1s URI, Cookie, fejl\u00e9cek, user-agent \u00e9s a k\u00e9r\u00e9s\/v\u00e1lasz t\u00f6rzs alapj\u00e1n;<\/p>\n<\/li>\n<li class=\"l\"> A forgalom elfog\u00e1s\u00e1ra k\u00fcl\u00f6nb\u00f6z\u0151 interf\u00e9szek t\u00e1mogat\u00e1sa, bele\u00e9rtve az NFQueue, IPFRing, LibPcap, IPFW, AF_PACKET, PF_RING-t. Lehets\u00e9ges a m\u00e1r mentett PCAP form\u00e1tum\u00fa f\u00e1jlok elemz\u00e9se;\n<\/li>\n<li class=\"l\"> Magas teljes\u00edtm\u00e9ny, k\u00e9pes kezelni ak\u00e1r 10 gigabit\/m\u00e1sodperc sebess\u00e9g\u0171 adatfolyamokat is szokv\u00e1nyos hardveren.\n<\/li>\n<li class=\"l\"> Magas teljes\u00edtm\u00e9ny\u0171 maszkos illeszt\u00e9si mechanizmus nagy IP-c\u00edmhalmazokhoz. A tartalom maszk \u00e9s regul\u00e1ris kifejez\u00e9sek szerinti kiemel\u00e9s\u00e9nek t\u00e1mogat\u00e1sa. F\u00e1jlok kiemel\u00e9se a forgalomb\u00f3l, azok azonos\u00edt\u00e1sa n\u00e9v, t\u00edpus vagy MD5 ellen\u0151rz\u0151 \u00f6sszeg alapj\u00e1n.\n<\/li>\n<li class=\"l\"> A v\u00e1ltoz\u00f3k haszn\u00e1lat\u00e1nak lehet\u0151s\u00e9ge a szab\u00e1lyokban: lehet\u0151s\u00e9g van az adatfolyamb\u00f3l val\u00f3 inform\u00e1ci\u00f3k meg\u0151rz\u00e9s\u00e9re \u00e9s azok k\u00e9s\u0151bbi felhaszn\u00e1l\u00e1s\u00e1ra m\u00e1s szab\u00e1lyokban;\n<\/li>\n<li class=\"l\"> YAML form\u00e1tum haszn\u00e1lata a konfigur\u00e1ci\u00f3s f\u00e1jlokban, ami \u00e1ttekinthet\u0151s\u00e9get biztos\u00edt a g\u00e9pi feldolgoz\u00e1s k\u00f6nnyeds\u00e9ge mellett;\n<\/li>\n<li class=\"l\"> Teljes t\u00e1mogat\u00e1s IPv6-hoz;\n<\/li>\n<li class=\"l\"> Be\u00e9p\u00edtett motor az automatikus t\u00f6redezetts\u00e9gmentes\u00edt\u00e9shez \u00e9s csomagok \u00fajb\u00f3li \u00f6sszeszerel\u00e9s\u00e9hez, amely lehet\u0151v\u00e9 teszi az adatfolyamok helyes feldolgoz\u00e1s\u00e1t, f\u00fcggetlen\u00fcl a csomagok \u00e9rkez\u00e9si sorrendj\u00e9t\u0151l;\n<\/li>\n<li class=\"l\"> Alag\u00fatk\u00e9pz\u0151 protokollok t\u00e1mogat\u00e1sa: Teredo, IP-IP, IP6-IP4, IP4-IP6, GRE;\n<\/li>\n<li class=\"l\"> Csomagok dek\u00f3dol\u00e1s\u00e1nak t\u00e1mogat\u00e1sa: IPv4, IPv6, TCP, UDP, SCTP, ICMPv4, ICMPv6, GRE, Ethernet, PPP, PPPoE, Raw, SLL, VLAN;\n<\/li>\n<li class=\"l\"> A TLS\/SSL kapcsolatokban szerepl\u0151 kulcsok \u00e9s tan\u00fas\u00edtv\u00e1nyok napl\u00f3z\u00e1si m\u00f3dja;\n<\/li>\n<li class=\"l\"> Lua nyelv\u0171 szkriptek \u00edr\u00e1s\u00e1nak lehet\u0151s\u00e9ge kiterjesztett elemz\u00e9s \u00e9s tov\u00e1bbi funkci\u00f3k megval\u00f3s\u00edt\u00e1sa \u00e9rdek\u00e9ben, amelyek sz\u00fcks\u00e9gesek a standard szab\u00e1lyokkal nem elegend\u0151 forgalomt\u00edpusok meghat\u00e1roz\u00e1s\u00e1hoz.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51686\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f OISF (Open Information Security Foundation) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f \u0438 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0432\u0442\u043e\u0440\u0436\u0435\u043d\u0438\u0439 Suricata 5.0, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0438\u043d\u0441\u043f\u0435\u043a\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0432\u0438\u0434\u043e\u0432 \u0442\u0440\u0430\u0444\u0438\u043a\u0430. \u0412 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445 Suricata \u0434\u043e\u043f\u0443\u0441\u0442\u0438\u043c\u043e \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u0435 \u0431\u0430\u0437\u044b \u0441\u0438\u0433\u043d\u0430\u0442\u0443\u0440, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c Snort, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043d\u0430\u0431\u043e\u0440\u043e\u0432 \u043f\u0440\u0430\u0432\u0438\u043b Emerging Threats \u0438 Emerging Threats Pro. \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u044e\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u043c\u043e\u0434\u0443\u043b\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-38972","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f OISF (Open Information Security Foundation) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 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