{"id":100782,"date":"2021-07-16T22:22:59","date_gmt":"2021-07-16T20:23:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov"},"modified":"2021-07-16T22:22:59","modified_gmt":"2021-07-16T20:23:00","slug":"uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/uyazvimost-v-ublock-origin-privodyashhaya-k-krahu-ili-ischerpaniyu-resursov","title":{"rendered":"S\u00e5rbarhet i uBlock Origin som leder till krasch eller resursutarmning","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I systemet f\u00f6r att blockera o\u00f6nskat inneh\u00e5ll, uBlock Origin, har en s\u00e5rbarhet identifierats som kan orsaka krasch eller minnesutarmning vid navigering p\u00e5 en speciellt utformad URL, om denna URL faller under strikt blockeringsfilter. S\u00e5rbarheten upptr\u00e4der endast vid direkt navigering till den problematiska URL:en, till exempel vid klick p\u00e5 en l\u00e4nk. <\/p>\n

S\u00e5rbarheten har \u00e5tg\u00e4rdats i uppdateringen av uBlock Origin 1.36.2. En liknande problematik p\u00e5verkar till\u00e4gget uMatrix, men dess underh\u00e5ll har upph\u00f6rt och n\u00e5gra uppdateringar kommer inte l\u00e4ngre att sl\u00e4ppas. Det finns inga skyddande arbetss\u00e4tt f\u00f6r uMatrix (ursprungligen f\u00f6reslogs det att inaktivera alla strikta blockeringsfilter via fliken 'Assets', men denna rekommendation erk\u00e4ndes som otillr\u00e4cklig och skapade problem f\u00f6r anv\u00e4ndare med egna blockeringsregler). I uMatrix, en fork av uMatrix fr\u00e5n projektet Pale Moon, har s\u00e5rbarheten \u00e5tg\u00e4rdats i version 4.4.9. <\/p>\n

Det strikta blockeringsfiltret definieras vanligtvis p\u00e5 niv\u00e5 dom\u00e4ner<\/a> och inneb\u00e4r ett f\u00f6rbud mot alla anslutningar, \u00e4ven vid direkt navigering via l\u00e4nk. S\u00e5rbarheten orsakas av att under \u00f6verg\u00e5ngen till en sida som omfattas av det strikta blockeringsfiltret visas en varning f\u00f6r anv\u00e4ndaren, som inneh\u00e5ller information om den blockerade resursen, inklusive URL och fr\u00e5geparametrar. Problemet \u00e4r att uBlock Origin analyserar fr\u00e5geparametrarna rekursivt och l\u00e4gger till dem i DOM-tr\u00e4det utan att ta h\u00e4nsyn till niv\u00e5strukturen. <\/p>\n

Vid bearbetning av en s\u00e4rskilt utformad URL i uBlock Origin f\u00f6r Chrome kan en krasch av processen d\u00e4r webbl\u00e4sartill\u00e4gget k\u00f6rs orsakas. Efter kraschen, s\u00e5 l\u00e4nge processen med till\u00e4gget inte startas om, f\u00f6rblir anv\u00e4ndaren utan blockering av o\u00f6nskat inneh\u00e5ll. I Firefox observeras minnesutarmning.

\"S\u00e5rbarhet<\/center>
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u0436\u0435\u043b\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 uBlock Origin \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043a\u0440\u0430\u0445\u0430 \u0438\u043b\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0438 \u043d\u0430\u0432\u0438\u0433\u0430\u0446\u0438\u0438 \u043f\u043e \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u043c\u0443 URL, \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u043e\u0434\u043f\u0430\u0434\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u043e\u0433\u043e URL \u043f\u043e\u0434 \u0444\u0438\u043b\u044c\u0442\u0440\u044b \u0441\u0442\u0440\u043e\u0433\u043e\u0439 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0438 («strict blocking»). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438 \u043f\u0440\u044f\u043c\u043e\u043c \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0435 \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0439 URL, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u043f\u0440\u0438 \u043a\u043b\u0438\u043a\u0435 \u043f\u043e \u0441\u0441\u044b\u043b\u043a\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0438 uBlock Origin 1.36.2. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":100783,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-100782","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47S\u00e5rbarhet i uBlock Origin som leder till krasch eller resursutarmning | ProHoster","description":"En s\u00e5rbarhet har uppt\u00e4ckts i inneh\u00e5llsblockeringssystemet uBlock Origin, som g\u00f6r det m\u00f6jligt att orsaka krasch eller minnesutarmning n\u00e4r man navigerar 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