{"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\/cs\/blog\/news\/dostupna-sistema-obnaruzheniya-atak-suricata-5-0","title":{"rendered":"Syst\u00e9m detekce \u00fatok\u016f Suricata 5.0 je nyn\u00ed k dispozici","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Organizace OISF (Open Information Security Foundation) <noindex><a rel=\"nofollow\" href=\"https:\/\/suricata-ids.org\/2019\/10\/15\/announcing-suricata-5-0-0\/\">publikovala<\/a><\/noindex> uvolnila syst\u00e9m detekce a prevence s\u00ed\u0165ov\u00fdch \u00fatok\u016f <noindex><a rel=\"nofollow\" href=\"http:\/\/suricata-ids.org\/\">Suricata 5.0<\/a><\/noindex>, kter\u00fd poskytuje n\u00e1stroje pro inspekci r\u016fzn\u00fdch typ\u016f provozu. V konfigurac\u00edch Suricata je mo\u017en\u00e9 vyu\u017e\u00edvat <noindex><a rel=\"nofollow\" href=\"http:\/\/www.snort.org\/vrt\">datab\u00e1zi signatur<\/a><\/noindex>, vyv\u00edjenou projektem Snort, stejn\u011b jako sady pravidel <noindex><a rel=\"nofollow\" href=\"http:\/\/rules.emergingthreats.net\/\">Emerging Threats<\/a><\/noindex> a <noindex><a rel=\"nofollow\" href=\"http:\/\/rules.emergingthreatspro.com\/\">Emerging Threats Pro<\/a><\/noindex>. Zdrojov\u00e9 k\u00f3dy projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/OISF\/suricata\">se distribuj\u00ed<\/a><\/noindex> pod licenc\u00ed GPLv2. <\/p>\n<p>Hlavn\u00ed zm\u011bny:\n<\/p>\n<ul>\n<li class=\"l\"> Byly p\u0159edstaveny nov\u00e9 moduly pro anal\u00fdzu a logov\u00e1n\u00ed protokol\u016f<br \/>\nRDP, SNMP a SIP, napsan\u00e9 v jazyce Rust. Do modulu pro rozbor FTP byla p\u0159id\u00e1na mo\u017enost logov\u00e1n\u00ed prost\u0159ednictv\u00edm syst\u00e9mu EVE, kter\u00fd zaji\u0161\u0165uje v\u00fdstup ud\u00e1lost\u00ed ve form\u00e1tu JSON;<\/p>\n<li class=\"l\"> K podpo\u0159e metody identifikace TLS klient\u016f JA3, kter\u00e1 byla p\u0159id\u00e1na v p\u0159edchoz\u00ed verzi, byla nov\u011b p\u0159id\u00e1na podpora metody <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\">umo\u017e\u0148uj\u00edc\u00ed<\/a><\/noindex> Na z\u00e1klad\u011b vlastnost\u00ed sjedn\u00e1v\u00e1n\u00ed spojen\u00ed a nastaven\u00fdch parametr\u016f ur\u010dovat, jak\u00fd software se pou\u017e\u00edv\u00e1 pro nav\u00e1z\u00e1n\u00ed spojen\u00ed (nap\u0159\u00edklad umo\u017e\u0148uje odhalit pou\u017e\u00edv\u00e1n\u00ed Toru a dal\u0161\u00edch typov\u00fdch aplikac\u00ed). JA3 umo\u017e\u0148uje identifikovat klienty, zat\u00edmco JA3S \u2014 servery. V\u00fdsledky identifikace lze vyu\u017e\u00edt v pravidlech a log\u00e1ch;\n<li class=\"l\"> Byla p\u0159id\u00e1na experiment\u00e1ln\u00ed funkce pro porovn\u00e1v\u00e1n\u00ed velk\u00fdch datov\u00fdch sad, implementov\u00e1na nov\u00fdmi operacemi  <noindex><a rel=\"nofollow\" href=\"https:\/\/suricata.readthedocs.io\/en\/suricata-5.0.0\/rules\/datasets.html\">dataset a datarep<\/a><\/noindex>. Nap\u0159\u00edklad, tato mo\u017enost je pou\u017eiteln\u00e1 pro hled\u00e1n\u00ed masky v rozs\u00e1hl\u00fdch \u010dern\u00fdch listech obsahuj\u00edc\u00edch miliony polo\u017eek;\n<li class=\"l\"> V re\u017eimu kontroly HTTP bylo zaji\u0161t\u011bno \u00fapln\u00e9 pokryt\u00ed v\u0161ech situac\u00ed uveden\u00fdch v testovac\u00edm souboru <noindex><a rel=\"nofollow\" href=\"https:\/\/noxxi.de\/research\/http-evader.html\">HTTP Evader<\/a><\/noindex> (nap\u0159\u00edklad pokr\u00fdv\u00e1 metody pou\u017eit\u00e9 k maskov\u00e1n\u00ed \u0161kodliv\u00e9 aktivity v provozu);\n<li class=\"l\"> N\u00e1stroje pro v\u00fdvoj modul\u016f v jazyce Rust byly p\u0159evedeny z voliteln\u00fdch na povinn\u00e9 standardn\u00ed mo\u017enosti. V budoucnu se pl\u00e1nuje roz\u0161\u00ed\u0159en\u00ed pou\u017eit\u00ed Rustu v k\u00f3du projektu a postupn\u00e1 n\u00e1hrada modul\u016f za ekvivalenty vyvinut\u00e9 v Rustu;\n<li class=\"l\"> Engine pro identifikaci protokol\u016f byl vylep\u0161en v oblasti zvy\u0161ov\u00e1n\u00ed p\u0159esnosti a zpracov\u00e1n\u00ed asynchronn\u00edch tok\u016f provozu;\n<li class=\"l\"> Do logu EVE byla p\u0159id\u00e1na podpora nov\u00e9ho typu z\u00e1znamu \u201eanomaly\u201c, ve kter\u00e9m jsou uchov\u00e1v\u00e1na netypick\u00e1 ud\u00e1losti zji\u0161t\u011bn\u00e1 p\u0159i dek\u00f3dov\u00e1n\u00ed paket\u016f. V EVE byl tak\u00e9 roz\u0161\u00ed\u0159en odraz informac\u00ed o VLAN a rozhran\u00edch pro zachycov\u00e1n\u00ed provozu. Byla p\u0159id\u00e1na mo\u017enost uchov\u00e1vat v\u0161echny HTTP hlavi\u010dky v http z\u00e1znamech logu EVE;\n<li class=\"l\"> V eBPF zalo\u017een\u00fdch zpracovatel\u00edch byla zaji\u0161t\u011bna podpora hardwarov\u00fdch mechanism\u016f pro urychlen\u00ed zachyt\u00e1v\u00e1n\u00ed paket\u016f. Hardwarov\u00e9 urychlen\u00ed je zat\u00edm omezeno na s\u00ed\u0165ov\u00e9 adapt\u00e9ry Netronome, ale brzy bude dostupn\u00e9 i pro jin\u00fd hardware;\n<li class=\"l\"> P\u0159epsan\u00fd k\u00f3d pro zachycen\u00ed provozu pomoc\u00ed r\u00e1mce Netmap. P\u0159id\u00e1na mo\u017enost vyu\u017eit\u00ed roz\u0161\u00ed\u0159en\u00fdch funkc\u00ed Netmap, jako je virtu\u00e1ln\u00ed switch. <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\">Byla p\u0159id\u00e1na<\/a><\/noindex> Podpora nov\u00e9 schematu ur\u010dov\u00e1n\u00ed kl\u00ed\u010dov\u00fdch slov pro \u201elepiv\u00e9 buffery\u201c (Sticky Buffers). Nov\u00e9 sch\u00e9ma je definov\u00e1no ve form\u00e1tu \u201eprotokol.buffer\u201c, nap\u0159\u00edklad pro inspekci URI kl\u00ed\u010dov\u00e9 slovo bude m\u00edt tvar \u201ehttp.uri\u201c m\u00edsto \u201ehttp_uri\u201c;\n<li class=\"l\"> Ve\u0161ker\u00fd pou\u017eit\u00fd Python k\u00f3d byl zkontrolov\u00e1n na kompatibilitu s<br \/>\nPython 3;<\/p>\n<li class=\"l\"> Byla ukon\u010dena podpora architektury Tilera, textov\u00e9ho logu dns.log a star\u00e9ho logu files-json.log.\n<\/ul>\n<p>Vlastnosti Suricata:\n<\/p>\n<ul>\n<li class=\"l\"> Pou\u017eit\u00ed jednotn\u00e9ho form\u00e1tu pro v\u00fdstup v\u00fdsledk\u016f hodnocen\u00ed <noindex><a rel=\"nofollow\" href=\"http:\/\/searchsecuritychannel.techtarget.com\/tip\/0,289483,sid97_gci1339679,00.html\">Unified2<\/a><\/noindex>, tak\u00e9 pou\u017e\u00edvan\u00e9ho projektem Snort, co\u017e umo\u017e\u0148uje pou\u017eit\u00ed standardn\u00edch n\u00e1stroj\u016f pro anal\u00fdzu, jako je <noindex><a rel=\"nofollow\" href=\"http:\/\/www.securixlive.com\/barnyard2\/index.php\">barnyard2<\/a><\/noindex>. Mo\u017enost integrace s produkty BASE, Snorby, Sguil a SQueRT. Podpora v\u00fdstupu ve form\u00e1tu PCAP;\n<\/li>\n<li class=\"l\">  Podpora automatick\u00e9ho rozpozn\u00e1v\u00e1n\u00ed protokol\u016f (IP, TCP, UDP, ICMP, HTTP, TLS, FTP, SMB atd.), co\u017e umo\u017e\u0148uje manipulaci v pravidlech pouze podle typu protokolu, bez vazby na \u010d\u00edslo portu (nap\u0159\u00edklad blokov\u00e1n\u00ed HTTP provozu na nestandardn\u00edm portu). K dispozici jsou dekod\u00e9ry pro protokoly HTTP, SSL, TLS, SMB, SMB2, DCERPC, SMTP, FTP a SSH;\n<\/li>\n<li class=\"l\"> Siln\u00fd syst\u00e9m anal\u00fdzy HTTP provozu, kter\u00fd vyu\u017e\u00edv\u00e1 pro anal\u00fdzu a normalizaci HTTP provozu speci\u00e1ln\u00ed knihovnu HTP, vytvo\u0159enou autorem projektu Mod_Security. K dispozici je modul pro veden\u00ed podrobn\u00e9ho logu p\u0159enos\u016f HTTP, log je uchov\u00e1v\u00e1n ve standardn\u00edm form\u00e1tu.<br \/>\nApache. Podporuje extrakci a kontrolu soubor\u016f p\u0159en\u00e1\u0161en\u00fdch protokolem HTTP. Podpora anal\u00fdzy komprimovan\u00e9ho obsahu. Mo\u017enost identifikace pomoc\u00ed URI, cookie, hlavi\u010dek, user-agent, t\u011bla \u017e\u00e1dosti\/odpov\u011bdi;<\/p>\n<\/li>\n<li class=\"l\"> Podpora r\u016fzn\u00fdch rozhran\u00ed pro zachyt\u00e1v\u00e1n\u00ed provozu, v\u010detn\u011b NFQueue, IPFRing, LibPcap, IPFW, AF_PACKET, PF_RING. Mo\u017enost anal\u00fdzy ji\u017e ulo\u017een\u00fdch soubor\u016f ve form\u00e1tu PCAP;\n<\/li>\n<li class=\"l\"> Vysok\u00fd v\u00fdkon, schopnost zpracov\u00e1vat na b\u011b\u017en\u00e9m vybaven\u00ed toky a\u017e do 10 gigabit\u016f\/sec.\n<\/li>\n<li class=\"l\"> Vysoce v\u00fdkonn\u00fd mechanismus shody pomoc\u00ed masky s velk\u00fdmi sadami IP adres. Podpora vy\u010dlen\u011bn\u00ed obsahu podle masky a regul\u00e1rn\u00edch v\u00fdraz\u016f. Vy\u010dlen\u011bn\u00ed soubor\u016f z provozu, v\u010detn\u011b jejich identifikace podle n\u00e1zvu, typu nebo kontroln\u00edho sou\u010dtu MD5.\n<\/li>\n<li class=\"l\"> Mo\u017enost pou\u017eit\u00ed prom\u011bnn\u00fdch v pravidlech: lze ulo\u017eit informace z toku a pozd\u011bji je pou\u017e\u00edt v jin\u00fdch pravidlech;\n<\/li>\n<li class=\"l\"> Pou\u017eit\u00ed form\u00e1tu YAML v konfigura\u010dn\u00edch souborech, co\u017e umo\u017e\u0148uje zachovat p\u0159ehlednost p\u0159i snadn\u00e9m strojov\u00e9m zpracov\u00e1n\u00ed;\n<\/li>\n<li class=\"l\"> \u00dapln\u00e1 podpora IPv6;\n<\/li>\n<li class=\"l\"> Vestav\u011bn\u00fd motor pro automatickou defragmentaci a p\u0159estavbu paket\u016f, kter\u00fd umo\u017e\u0148uje zaji\u0161t\u011bn\u00ed spr\u00e1vn\u00e9ho zpracov\u00e1n\u00ed tok\u016f, nez\u00e1visle na po\u0159ad\u00ed p\u0159\u00edjmu paket\u016f;\n<\/li>\n<li class=\"l\"> Podpora tunelovac\u00edch protokol\u016f: Teredo, IP-IP, IP6-IP4, IP4-IP6, GRE;\n<\/li>\n<li class=\"l\"> Podpora dek\u00f3dov\u00e1n\u00ed paket\u016f: IPv4, IPv6, TCP, UDP, SCTP, ICMPv4, ICMPv6, GRE, Ethernet, PPP, PPPoE, Raw, SLL, VLAN;\n<\/li>\n<li class=\"l\"> Re\u017eim veden\u00ed logu kl\u00ed\u010d\u016f a certifik\u00e1t\u016f, kter\u00e9 se objevuj\u00ed v r\u00e1mci p\u0159ipojen\u00ed TLS\/SSL;\n<\/li>\n<li class=\"l\"> Mo\u017enost psan\u00ed skript\u016f v jazyce Lua pro zaji\u0161t\u011bn\u00ed roz\u0161\u00ed\u0159en\u00e9 anal\u00fdzy a realizaci dal\u0161\u00edch funkc\u00ed pot\u0159ebn\u00fdch pro ur\u010den\u00ed typ\u016f provozu, pro kter\u00e9 standardn\u00ed pravidla nesta\u010d\u00ed.\n<\/li>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <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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