{"id":85705,"date":"2020-06-18T13:43:02","date_gmt":"2020-06-18T11:43:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/utechka-poiskovyh-klyuchej-cherez-dns-v-firefox-i-chrome"},"modified":"2020-06-18T13:43:02","modified_gmt":"2020-06-18T11:43:02","slug":"utechka-poiskovyh-klyuchej-cherez-dns-v-firefox-i-chrome","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/utechka-poiskovyh-klyuchej-cherez-dns-v-firefox-i-chrome","title":{"rendered":"L\u00e6kage af s\u00f8geord gennem DNS i Firefox og Chrome","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I Firefox og Chrome opdaget<\/a><\/noindex> en funktion til h\u00e5ndtering af s\u00f8geforesp\u00f8rgsler indtastet i adresselinjen, som angiver<\/a><\/noindex> kan f\u00f8re til l\u00e6kage af oplysninger gennem udbyderens DNS-server. Problemet best\u00e5r i, at hvis s\u00f8geforesp\u00f8rgslen kun best\u00e5r af \u00e9t ord, fors\u00f8ger browseren f\u00f8rst at bestemme, om der findes en v\u00e6rt med det navn i DNS, idet den antager, at brugeren fors\u00f8ger at \u00e5bne et subdom\u00e6ne, og derefter omdirigerer foresp\u00f8rgslen til s\u00f8gemaskinen. P\u00e5 den m\u00e5de f\u00e5r ejeren af DNS-serveren, der er angivet i brugerens indstillinger, oplysninger om s\u00f8geforesp\u00f8rgsler best\u00e5ende af \u00e9t ord, hvilket betragtes som en overtr\u00e6delse af privatlivets fred.<\/p>\n

Problemet opst\u00e5r ved brug af b\u00e5de udbyderens DNS-server og tjenesterne 'DNS over HTTPS' (DoH), n\u00e5r der angives en DNS-suffiks i indstillingerne (som indstilles som standard ved modtagelse af parametre via DHCP). Hovedproblemet er, at selv ved aktivering af DoH forts\u00e6tter foresp\u00f8rgslerne med at blive sendt via den angivne DNS-server fra udbyderen.
\nDet er vigtigt, at fors\u00f8get p\u00e5 at resolve kun finder sted, n\u00e5r der sendes s\u00f8geforesp\u00f8rgsler best\u00e5ende af \u00e9t ord. Ved angivelse af flere ord foretages der ikke et opslag i DNS. <\/p>\n

\"L\u00e6kage<\/a><\/noindex><\/center><\/p>\n

Problemet er bekr\u00e6ftet i Firefox og Chrome, og det kan muligvis ogs\u00e5 p\u00e5virke andre browsere. Udviklerne af Firefox har anerkendt problemet og 2. februar blev udgivet en distribueret versionskontrolsystem<\/a><\/noindex> tilkendegivet, at de vil give en l\u00f8sning i version 79 af Firefox. Is\u00e6r for at styre adf\u00e6rden ved h\u00e5ndtering af s\u00f8geforesp\u00f8rgsler i about:config tilf\u00f8jet<\/a><\/noindex> indstilling<\/a><\/noindex> 'browser.urlbar.dnsResolveSingleWordsAfterSearch', n\u00e5r den s\u00e6ttes til '0', blokerer opl\u00f8sningen, '1' (som standard) bruger heuristik til selektiv opl\u00f8sning og '2' bevarer den gamle adf\u00e6rd. Heuristikken g\u00e5r ud p\u00e5<\/a><\/noindex> i kontrollen af aktivering af DoH, kun indeholdende en optegnelse om 'localhost' i \/etc\/hosts og frav\u00e6ret af et subdom\u00e6ne for den nuv\u00e6rende v\u00e6rt.<\/p>\n

Udviklerne af Chrome har lovet<\/a><\/noindex> begr\u00e6nse l\u00e6kagen gennem DNS, men en meddelelse<\/a><\/noindex> et lignende problem har st\u00e5et uafklaret siden 2015. Problemet viser sig ikke i Tor Browser.<\/p>\n

<\/a><\/noindex><\/p>\n

Kilde: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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