{"id":100191,"date":"2021-05-18T22:23:32","date_gmt":"2021-05-18T20:23:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-mozilla-predstavila-rezhim-strogoj-izolyaczii-sajtov-dlya-firefox"},"modified":"2026-02-04T17:53:51","modified_gmt":"2026-02-04T15:53:51","slug":"kompaniya-mozilla-predstavila-rezhim-strogoj-izolyaczii-sajtov-dlya-firefox","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/kompaniya-mozilla-predstavila-rezhim-strogoj-izolyaczii-sajtov-dlya-firefox","title":{"rendered":"F\u00f6retaget Mozilla har presenterat ett strikt webbplatsisolationsl\u00e4ge f\u00f6r Firefox","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Mozilla har meddelat att de inleder omfattande tester av l\u00e4get f\u00f6r strikt webbplatsisolering i de nattliga versionerna och beta-utg\u00e5vorna av Firefox, vilket har utvecklats inom ramen f\u00f6r projektet Fission. Detta l\u00e4ge utvidgar anv\u00e4ndningen av flertr\u00e5dad arkitektur \u2013 ist\u00e4llet f\u00f6r en fast upps\u00e4ttning processer, skapas en separat process f\u00f6r varje webbplats. Aktiveringen av Fission-l\u00e4get hanteras via variabeln \"fission.autostart=true\" i about:config eller p\u00e5 sidan about:preferences#experimental. <\/p>\n

Vi p\u00e5minner om att den flerprocessmodell som hittills har anv\u00e4nts i Firefox innebar drift av en upps\u00e4ttning av hanteringsprocesser: per standard 8 huvudprocesser f\u00f6r bearbetning av inneh\u00e5ll, 2 extra icke-privilegierade processer f\u00f6r webbinneh\u00e5ll och 4 hj\u00e4lpprocesser f\u00f6r till\u00e4gg, interaktion med GPU, n\u00e4tverksoperationer och avkodning av multimedia. F\u00f6rdelningen av flikar till processer gjordes slumpm\u00e4ssigt; till exempel kunde en bankwebbplats och en misst\u00e4nkt, op\u00e5litlig resurs hamna i samma process. <\/p>\n

Det nya l\u00e4get flyttar bearbetningen av varje webbplats till en separat process, d\u00e4r separeringen inte g\u00f6rs efter flikar, utan efter dom\u00e4ner, vilket g\u00f6r det m\u00f6jligt att ytterligare isolera inneh\u00e5llet i externa skripter och iframe-block. F\u00f6r separat bearbetning av underdom\u00e4ner f\u00f6r typiska tj\u00e4nster relaterade till olika webbplatser, till\u00e4mpas en separation baserat p\u00e5 faktiska (eTLD) snarare \u00e4n formella dom\u00e4ner. \u00f6verordnade dom\u00e4ner<\/a>, vilket b\u00f6r noteras i Public Suffix-listan (dvs. webbplatser som \"a.github.io\" och \"b.github.io\" kommer att k\u00f6ras i olika processer). <\/p>\n

Det strikta isoleringsl\u00e4get g\u00f6r det m\u00f6jligt att skydda sig mot attacker genom externa kanaler, till exempel i samband med s\u00e5rbarheter av typen Spectre, vilket kan leda till l\u00e4ckage av information inom en och samma process. L\u00e4ckage av konfidentiella uppgifter som hanteras i samma process kan intr\u00e4ffa vid k\u00f6rning av op\u00e5litlig extern kod i motorer med JIT och i virtuella maskiner<\/a>. I webbl\u00e4sare kan skadlig JavaScript-kod fr\u00e5n en webbplats h\u00e4mta information om l\u00f6senord, \u00e5tkomstnycklar och kreditkortsnummer som anges p\u00e5 en annan webbplats som hanteras i samma process. F\u00f6r att skydda mot attacker via sidokanaler begr\u00e4nsade webbl\u00e4sarutvecklarna f\u00f6rst timers noggrannhet och blockerade tillg\u00e5ng till API:et SharedArrayBuffer, men dessa \u00e5tg\u00e4rder f\u00f6rsv\u00e5rade och f\u00f6rdr\u00f6jde bara attackerna (till exempel har en metod nyligen f\u00f6reslagits f\u00f6r att extrahera data fr\u00e5n CPU-cache, som fungerar utan JavaScript \u00f6verhuvudtaget). <\/p>\n

Bland andra f\u00f6rdelar med strikt isolering n\u00e4mns minskad minnesfragmentering, mer effektiv \u00e5terl\u00e4mning av minne till operativsystemet, minimering av p\u00e5verkan fr\u00e5n skr\u00e4psamling och intensiva ber\u00e4kningar p\u00e5 sidor i andra processer, \u00f6kad effektivitet i belastningsf\u00f6rdelningen \u00f6ver olika CPU-k\u00e4rnor och \u00f6kad stabilitet (om processen som hanterar iframe kraschar p\u00e5verkas inte huvudsidan och andra flikar). <\/p>\n

Bland de k\u00e4nda problemen vid anv\u00e4ndning av Fission noteras en m\u00e4rkbar \u00f6kning av minnesanv\u00e4ndning, X11-anslutningar och filbeskrivare vid \u00f6ppnande av ett stort antal flikar, samt st\u00f6rningar i vissa till\u00e4gg, bortfall av iframe-inneh\u00e5ll vid utskrift och vid anrop av sk\u00e4rmdumpsfunktionen, minskad effektivitet i caching av dokument med iframe, och f\u00f6rlust av inneh\u00e5ll i ifyllda men inte skickade formul\u00e4r vid \u00e5terst\u00e4llning av sessionen efter en krasch.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Mozilla \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e \u043d\u0430\u0447\u0430\u043b\u0435 \u043c\u0430\u0441\u0441\u043e\u0432\u043e\u0433\u043e \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u043d\u043e\u0447\u043d\u044b\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 \u0438 \u0431\u0435\u0442\u0430-\u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 Firefox \u0440\u0435\u0436\u0438\u043c\u0430 \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0441\u0430\u0439\u0442\u043e\u0432, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0432\u0448\u0435\u0433\u043e\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Fission. \u0420\u0435\u0436\u0438\u043c \u0440\u0430\u0441\u0448\u0438\u0440\u044f\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 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\u043d\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0435 about:preferences#experimental. \u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u0430\u044f […]<\/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-100191","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Mozilla har lanserat l\u00e4get f\u00f6r strikt isolering av webbplatser f\u00f6r Firefox | ProHoster","description":"F\u00f6retaget Mozilla har meddelat att man p\u00e5b\u00f6rjar omfattande tester av l\u00e4get f\u00f6r strikt isolering av webbplatser i nattleveranser och beta-versioner av Firefox, som utvecklades inom ramen f\u00f6r projektet Fission.","canonical_url":"https:\/\/prohoster.info\/sv\/blog\/news\/kompaniya-mozilla-predstavila-rezhim-strogoj-izolyaczii-sajtov-dlya-firefox","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sv_SE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Mozilla \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0440\u0435\u0436\u0438\u043c \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0441\u0430\u0439\u0442\u043e\u0432 \u0434\u043b\u044f Firefox | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Mozilla \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0430 \u043e \u043d\u0430\u0447\u0430\u043b\u0435 \u043c\u0430\u0441\u0441\u043e\u0432\u043e\u0433\u043e \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u043d\u043e\u0447\u043d\u044b\u0445 \u0441\u0431\u043e\u0440\u043a\u0430\u0445 \u0438 \u0431\u0435\u0442\u0430-\u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 Firefox \u0440\u0435\u0436\u0438\u043c\u0430 \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0441\u0430\u0439\u0442\u043e\u0432, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0432\u0448\u0435\u0433\u043e\u0441\u044f \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 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