{"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\/cs\/blog\/news\/kompaniya-mozilla-predstavila-rezhim-strogoj-izolyaczii-sajtov-dlya-firefox","title":{"rendered":"Spole\u010dnost Mozilla p\u0159edstavila re\u017eim p\u0159\u00edsn\u00e9 izolace webov\u00fdch str\u00e1nek pro Firefox.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spole\u010dnost Mozilla ozn\u00e1mila zah\u00e1jen\u00ed rozs\u00e1hl\u00e9ho testov\u00e1n\u00ed v no\u010dn\u00edch sestaven\u00edch a beta verz\u00edch Firefoxu re\u017eimu p\u0159\u00edsn\u00e9 izolace web\u016f, kter\u00fd se vyv\u00edjel v r\u00e1mci projektu Fission. Tento re\u017eim roz\u0161i\u0159uje pou\u017eit\u00ed v\u00edcetransak\u010dn\u00ed architektury - m\u00edsto pevn\u00e9ho souboru proces\u016f se pro ka\u017ed\u00fd web vytv\u00e1\u0159\u00ed samostatn\u00fd proces. Spr\u00e1va aktivace re\u017eimu Fission se prov\u00e1d\u00ed pomoc\u00ed prom\u011bnn\u00e9 \u201efission.autostart=true\u201c v about:config nebo na str\u00e1nce about:preferences#experimental. <\/p>\n

P\u0159ipome\u0148me, \u017ee dosud pou\u017e\u00edvan\u00fd v\u00edcestup\u0148ov\u00fd model ve Firefoxu zahrnoval spu\u0161t\u011bn\u00ed skupiny proces\u016f-zpracovatel\u016f: ve v\u00fdchoz\u00edm nastaven\u00ed 8 hlavn\u00edch proces\u016f pro zpracov\u00e1n\u00ed obsahu, 2 dal\u0161\u00ed nep\u0159id\u011blen\u00e9 procesy pro webov\u00fd obsah a 4 podp\u016frn\u00e9 procesy pro dopl\u0148ky, interakci s GPU, s\u00ed\u0165ov\u00e9 operace a dek\u00f3dov\u00e1n\u00ed multimedi\u00e1ln\u00edch dat. Rozd\u011blen\u00ed z\u00e1lo\u017eek mezi procesy prob\u00edhalo n\u00e1hodn\u011b, nap\u0159\u00edklad v jednom procesu mohlo doj\u00edt ke zpracov\u00e1n\u00ed bankovn\u00edho webu a ned\u016fv\u011bryhodn\u00e9ho podez\u0159el\u00e9ho zdroje. <\/p>\n

Nov\u00fd re\u017eim odd\u011bluje zpracov\u00e1n\u00ed ka\u017ed\u00e9ho webu do samostatn\u00e9ho procesu s rozd\u011blen\u00edm nikoli podle z\u00e1lo\u017eek, ale podle dom\u00e9n, co\u017e umo\u017e\u0148uje d\u00e1le izolovat obsah extern\u00edch skript\u016f a iframe blok\u016f. Pro odd\u011blen\u00e9 zpracov\u00e1n\u00ed subdom\u00e9n typick\u00fdch slu\u017eeb souvisej\u00edc\u00edch s r\u016fzn\u00fdmi weby se pou\u017e\u00edv\u00e1 rozd\u011blen\u00ed nikoli podle form\u00e1ln\u00edch, ale podle faktick\u00fdch (eTLD) dom\u00e9nami nejvy\u0161\u0161\u00ed \u00farovn\u011b<\/a>, kter\u00e9 jsou uvedeny na seznamu Public Suffix (tzn. weby \u201ea.github.io\u201c a \u201eb.github.io\u201c budou spu\u0161t\u011bny v r\u016fzn\u00fdch procesech). <\/p>\n

Re\u017eim striktn\u00ed izolace umo\u017e\u0148uje chr\u00e1nit se p\u0159ed \u00fatoky p\u0159es ciz\u00ed kan\u00e1ly, nap\u0159\u00edklad spojen\u00fdmi s zranitelnostmi t\u0159\u00eddy Spectre, kter\u00e9 vedou k \u00faniku informac\u00ed v r\u00e1mci jednoho procesu. \u00danik d\u016fv\u011brn\u00fdch dat zpracov\u00e1van\u00fdch ve stejn\u00e9m procesu je mo\u017en\u00fd p\u0159i spu\u0161t\u011bn\u00ed ned\u016fv\u011bryhodn\u00e9ho extern\u00edho k\u00f3du v JIT enginech a v virtual machines<\/a>. V kontextu webov\u00fdch prohl\u00ed\u017ee\u010d\u016f m\u016f\u017ee \u0161kodliv\u00fd JavaScriptov\u00fd k\u00f3d z jednoho webu z\u00edskat informace o heslech, p\u0159\u00edstupov\u00fdch kl\u00ed\u010d\u00edch a \u010d\u00edslech kreditn\u00edch karet, kter\u00e9 byly zad\u00e1ny na jin\u00e9m webu zpracov\u00e1van\u00e9m ve stejn\u00e9m procesu. P\u016fvodn\u011b, aby se chr\u00e1nili p\u0159ed \u00fatoky pomoc\u00ed vedlej\u0161\u00edch kan\u00e1l\u016f, v\u00fdvoj\u00e1\u0159i prohl\u00ed\u017ee\u010d\u016f omezili p\u0159esnost \u010dasova\u010de a zablokovali p\u0159\u00edstup k API SharedArrayBuffer, ale tato opat\u0159en\u00ed pouze zt\u00ed\u017eila a zpomalila prov\u00e1d\u011bn\u00ed \u00fatok\u016f (nap\u0159\u00edklad byla ned\u00e1vno navr\u017eena metoda extrakce dat z cache CPU, kter\u00e1 funguje \u00fapln\u011b bez JavaScriptu). <\/p>\n

Mezi dal\u0161\u00ed v\u00fdhody re\u017eimu p\u0159\u00edsn\u00e9 izolace pat\u0159\u00ed sn\u00ed\u017een\u00ed fragmentace pam\u011bti, efektivn\u011bj\u0161\u00ed vracen\u00ed pam\u011bti opera\u010dn\u00edmu syst\u00e9mu, minimalizace vlivu garbage collectoru a intenzivn\u00edch v\u00fdpo\u010dt\u016f na str\u00e1nky v jin\u00fdch procesech, zv\u00fd\u0161en\u00ed efektivity rozlo\u017een\u00ed z\u00e1t\u011b\u017ee na r\u016fzn\u00e1 j\u00e1dra CPU a zv\u00fd\u0161en\u00ed stability (crash procesu zpracov\u00e1vaj\u00edc\u00edho iframe nezp\u016fsob\u00ed p\u00e1d hlavn\u00edho webu a dal\u0161\u00edch karet). <\/p>\n

Mezi zn\u00e1m\u00e9 probl\u00e9my, kter\u00e9 vznikaj\u00ed p\u0159i pou\u017e\u00edv\u00e1n\u00ed Fission, se zaznamen\u00e1v\u00e1 v\u00fdrazn\u00e9 zv\u00fd\u0161en\u00ed spot\u0159eby pam\u011bti, X11 p\u0159ipojen\u00ed a deskriptor\u016f soubor\u016f p\u0159i otev\u0159en\u00ed velk\u00e9ho po\u010dtu karet, stejn\u011b jako poruchy n\u011bkter\u00fdch roz\u0161\u00ed\u0159en\u00ed, zmizen\u00ed obsahu iframe p\u0159i tisku a vyvol\u00e1n\u00ed funkce pro zachycen\u00ed obrazovky, sn\u00ed\u017een\u00ed efektivity cachov\u00e1n\u00ed dokument\u016f s iframe a ztr\u00e1ta obsahu vypln\u011bn\u00fdch, ale neodeslan\u00fdch formul\u00e1\u0159\u016f p\u0159i obnoven\u00ed relace po p\u00e1du.
\n
Zdroj: 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 \u043c\u043d\u043e\u0433\u043e\u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b — \u0432\u043c\u0435\u0441\u0442\u043e \u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043f\u0443\u043b\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u043d\u0430 \u043a\u0430\u0436\u0434\u044b\u0439 \u0441\u0430\u0439\u0442 \u0441\u043e\u0437\u0434\u0430\u0451\u0442\u0441\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441. \u0423\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u0440\u0435\u0436\u0438\u043c\u0430 Fission \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e «fission.autostart=true» \u0432 about:config \u0438\u043b\u0438 \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\udd47Spole\u010dnost Mozilla p\u0159edstavila re\u017eim p\u0159\u00edsn\u00e9 izolace web\u016f pro Firefox | ProHoster","description":"Spole\u010dnost Mozilla ozn\u00e1mila zah\u00e1jen\u00ed 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