{"id":101556,"date":"2021-10-06T16:22:48","date_gmt":"2021-10-06T14:22:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/stabilnyj-reliz-proksi-servera-squid-5"},"modified":"2021-10-06T16:22:48","modified_gmt":"2021-10-06T14:22:48","slug":"stabilnyj-reliz-proksi-servera-squid-5","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/stabilnyj-reliz-proksi-servera-squid-5","title":{"rendered":"Squid 5 proksi serveri stabiilne versioon","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>P\u00e4rast kolmeaastast arendust on v\u00e4lja antud stabiilne Squid 5.1 proxy-serveri versioon, mis on valmis kasutamiseks tootmiss\u00fcsteemides (versioonid 5.0.x olid beetaversioonid). P\u00e4rast 5.x haru muutmist stabiilseks, tehakse selles edaspidi vaid turvafikseerimisi ja stabiilsusprobleemide lahendusi, samuti on lubatud v\u00e4ikeste optimeerimiste tegemine. Uute funktsioonide arendamine toimub uues katseharus 6.0. Eelmise stabiilse 4.x haru kasutajatele soovitatakse planeerida \u00fcleminekut 5.x harule.       <\/p>\n<p>Peamised uuendused Squid 5:  <\/p>\n<ul>\n<li class=\"l\"> ICAP-protokolli (Internet Content Adaptation Protocol), mida kasutatakse sisu kontrollimise v\u00e4liste s\u00fcsteemidega integreerimiseks, on lisatud andmete kinnitamise mehhanismi toetus (trailer), mis v\u00f5imaldab vastusele lisada t\u00e4iendavaid p\u00e4iseid metainformatsiooniga, mis asuvad s\u00f5numi keha j\u00e4rel (n\u00e4iteks saab edastada kontrollsummat ja teavet tuvastatud probleemide kohta).\n<li class=\"l\"> K\u00fcsimuste suunamisel kasutatakse &#171;Happy Eyeballs&#187; algoritmi, mis kasutab kohe saadud IP-aadressi, ootamata, kuni k\u00f5ik potentsiaalselt saadaval olevad IPv4 ja IPv6 sihtaadressid on lahendatud. N\u00fc\u00fcd, selle asemel, et arvestada seadistust &#171;dns_v4_first&#187; IPv4 v\u00f5i IPv6 aadressir\u00fchma kasutamise j\u00e4rjekorra m\u00e4\u00e4ramiseks, v\u00f5etakse arvesse DNS-i vastuse j\u00e4rjekord: kui DNS AAAA vastus tuleb esimesena, kasutatakse saadud IPv6 aadressi. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/lir\/ipv4\/\"   title=\"IP-aadressid\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"692\">IP-aadressid<\/a> Seega, eelistatud aadressir\u00fchma seadistamine toimub n\u00fc\u00fcd tulem\u00fc\u00fcritasemel, DNS-is v\u00f5i k\u00e4ivitamisel valikuga &#171;&#8212;disable-ipv6&#187;. Ettepanek kiirendab TCP-\u00fchenduste loomise aega ja v\u00e4hendab DNS-i lahendamise viivituste m\u00f5ju j\u00f5udlusele.\n<li class=\"l\"> Direktiivi &#171;external_acl&#187; jaoks on lisatud t\u00f6\u00f6tleja &#171;ext_kerberos_sid_group_acl&#187; Active Directory r\u00fchmade autentimiseks Kerberose abil. Grupinime p\u00e4rimiseks kasutatakse ldapsearch utiliiti, mis on saadaval OpenLDAP pakendis.\n<li class=\"l\"> Berkeley DB andmebaasi vormi tugi on l\u00f5petatud litsentsi probleemide t\u00f5ttu. Berkeley DB 5.x haru ei ole juba mitu aastat hooldatud ning sisaldab lahendamata haavatavusi. \u00dcleminek uuematele v\u00e4ljaannetele ei ole v\u00f5imalik, kuna litsents on muudetud AGPLv3-ks, mille n\u00f5uded kehtivad ka rakenduste jaoks, mis kasutavad BerkeleyDB-d teegina \u2014 Squid on litsentseeritud GPLv2 alusel ja AGPL ei ole GPLv2-ga \u00fchilduv. Berkeleyst DB-lt on projekt \u00fcle viidud TrivialDB andmebaasi kasutusele, mis erinevalt Berkeley DB-st on optimeeritud samaaegseks juurdep\u00e4\u00e4suks andmebaasile. Berkeley DB tuge hoitakse praegu, kuid t\u00f6\u00f6tlejaid \u201eext_session_acl\u201c ja \u201eext_time_quota_acl\u201c soovitatakse n\u00fc\u00fcd kasutada salvestust\u00fc\u00fcpi \u201elibtdb\u201c asemel \u201elibdb\u201c.\n<li class=\"l\"> Lisatud tugi HTTP-pealkirjale CDN-Loop, mis on m\u00e4\u00e4ratletud RFC 8586-s ja v\u00f5imaldab avastada ts\u00fckleid sisu edastamise v\u00f5rkudes (pealkiri pakub kaitset olukordade eest, kus p\u00e4ring, suunatakse CDN-id vahel, mingil p\u00f5hjusel naaseb originaalsesse CDN-i, moodustades l\u00f5pmatu ts\u00fckli).\n<li class=\"l\"> SSL-Bump mehhanism, mis v\u00f5imaldab kr\u00fcpteeritud HTTPS-seansside sisu interceptimist, on saanud toe muudetud (uuesti kr\u00fcpteeritud) HTTPS-p\u00e4ringute suunamiseks teistele proxy-serveritele, mis on m\u00e4\u00e4ratud cache_peer'is, kasutades tavalist tunneli meetodit HTTP CONNECT kaudu (andmete edastamine HTTPS-i kaudu ei ole toetatud, kuna Squid ei saa praegu edastada TLS-i TLS-i sees). SSL-Bump v\u00f5imaldab esimest interceptitud HTTPS-p\u00e4ringut vastu v\u00f5ttes luua TLS-i \u00fchenduse sihiserveriga ja saada selle sertifikaadi. P\u00e4rast seda kasutab Squid sertifikaadist saadud tegelikku hostinime ja loob vale sertifikaadi, millega simuleerib n\u00f5utud serverit kliendiga suheldes, samal ajal j\u00e4tkates andmete saamiseks loodud TLS-i \u00fchenduse kasutamist sihiserveriga (et vale sertifikaadi kasutamine ei tooks kaasa klientide brauserites hoiatuste ilmumist, tuleb lisada vale sertifikaat, millega vale sertifikaadid genereeriti, juursertifikaatide ladustamisse).\n<li class=\"l\"> Lisatud on mark_client_connection ja mark_client_pack direktiivid, et siduda Netfilteri (CONNMARK) sildid TCP-kliendikontaktide v\u00f5i \u00fcksikute paketiga.      <\/ul>\n<p>J\u00e4rgmisena on kuumade j\u00e4lgede pealt avaldatud versioonid Squid 5.2 ja Squid 4.17, kus on k\u00f5rvaldatud haavatavused:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-28116 \u2014 teabe lekke v\u00f5imalus WCCPv2 spetsiaalselt vormistatud s\u00f5numite t\u00f6\u00f6tlemisel. Haavatavus v\u00f5imaldab r\u00fcndajal kahjustada tuntud WCCP marsruuterite loetelu ja suunata kliendi liiklus proksiserveri oma hostile. Probleem ilmneb ainult konfigureerimisel, kus on sisse l\u00fclitatud WCCPv2 tugi ja v\u00f5imalik on marsruuteri IP-aadressi valeesitus.\n<li class=\"l\"> CVE-2021-41611 \u2014 t\u00f5rge kontrollimisel <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/et\/ssl-sertifikat\/\"   title=\"TLS-sertifikaadid\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"958\">TLS-sertifikaadid<\/a>, mis v\u00f5imaldab juurdep\u00e4\u00e4su kasutada ebaregulaarsete sertifikaatidega.      <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55929\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u043a\u0441\u0438-\u0441\u0435\u0440\u0432\u0435\u0440\u0430 Squid 5.1, \u0433\u043e\u0442\u043e\u0432\u044b\u0439 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0440\u0430\u0431\u043e\u0447\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 (\u0432\u044b\u043f\u0443\u0441\u043a\u0438 5.0.x \u0438\u043c\u0435\u043b\u0438 \u0441\u0442\u0430\u0442\u0443\u0441 \u0431\u0435\u0442\u0430-\u0432\u0435\u0440\u0441\u0438\u0439). \u041f\u043e\u0441\u043b\u0435 \u043f\u0440\u0438\u0434\u0430\u043d\u0438\u044f \u0432\u0435\u0442\u043a\u0435 5.x \u0441\u0442\u0430\u0442\u0443\u0441\u0430 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439, \u0432 \u043d\u0435\u0439 \u043e\u0442\u043d\u044b\u043d\u0435 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0438 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441\u043e \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c\u044e, \u0442\u0430\u043a\u0436\u0435 \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0432\u043d\u0435\u0441\u0435\u043d\u0438\u0435 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0439. \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043d\u043e\u0432\u044b\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u0432 \u043d\u043e\u0432\u043e\u0439 \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0435 6.0. \u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c [&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-101556","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0442\u0440\u0451\u0445 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u043b\u0438\u0437 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