{"id":30014,"date":"2019-10-31T21:33:12","date_gmt":"2019-10-31T18:33:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler\/"},"modified":"2019-10-31T21:33:12","modified_gmt":"2019-10-31T18:33:12","slug":"amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler","title":{"rendered":"AMD har bekr\u00e4ftat att deras processorer inte \u00e4r s\u00e5rbara f\u00f6r Spoiler-anfallet.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I b\u00f6rjan av denna m\u00e5nad blev det k\u00e4nt att en ny kritisk s\u00e5rbarhet i Intel-processorer har uppt\u00e4ckts, som har f\u00e5tt namnet \u00abSpoiler\u00bb. De specialister som identifierade problemet meddelade att AMD- och ARM-processorer inte \u00e4r mottagliga f\u00f6r det. Nu har AMD bekr\u00e4ftat att p\u00e5 grund av arkitekturella egenskaper utg\u00f6r Spoiler ingen risk f\u00f6r deras processorer.<\/p>\n

\"AMD<\/p>\n

Precis som i fallet med s\u00e5rbarheterna Spectre och Meltdown ligger det nya problemet i genomf\u00f6randet av mekanismer f\u00f6r spekulativ exekvering av kommandon i Intel-processorer. I AMD-chips \u00e4r denna mekanism implementerad p\u00e5 ett annat s\u00e4tt, s\u00e4rskilt anv\u00e4nds en annan metod f\u00f6r att hantera operationer i RAM och cache. N\u00e4rmare best\u00e4mt kan Spoiler f\u00e5 tillg\u00e5ng till delvis information om adressen (\u00f6ver 11 bitar av adressen) under laddningsoperationer. AMD-processorer anv\u00e4nder inte delvisa adresstillf\u00e4lligheter \u00f6ver 11 bitar av adressen vid l\u00f6sning av laddningskonflikter.<\/p>\n

\"AMD<\/p>\n

Det \u00e4r viktigt att p\u00e5peka att \u00e4ven om Spoiler, liksom Spectre, bygger p\u00e5 mekanismen f\u00f6r spekulativ exekvering av kommandon, kan den nya s\u00e5rbarheten inte st\u00e4ngas med hj\u00e4lp av befintliga \"patchar\" f\u00f6r tidigare exploits. Det vill s\u00e4ga att aktuella Intel-processorer beh\u00f6ver nya patchar, som kan p\u00e5verka prestandan hos chipsen igen. P\u00e5 l\u00e4ngre sikt kommer Intel sj\u00e4lvklart beh\u00f6va g\u00f6ra \u00e4ndringar p\u00e5 arkitekturniv\u00e5. AMD kommer dock inte beh\u00f6va vidta liknande \u00e5tg\u00e4rder.<\/p>\n

\"AMD<\/p>\n

I slutet konstaterar vi att Spoiler ber\u00f6r alla Intel-processorer, fr\u00e5n de f\u00f6rsta generationens Core-chips till de aktuella Coffee Lake Refresh, samt de \u00e4nnu ej sl\u00e4ppta Cascade Lake och Ice Lake. Trots att Intel om problematiken informerades redan i b\u00f6rjan av december f\u00f6rra \u00e5ret, och att det har g\u00e5tt mer \u00e4n tio dagar sedan Spoiler blev offentligt k\u00e4nt, har f\u00f6retaget Intel \u00e4nnu inte presenterat n\u00e5gra m\u00f6jliga l\u00f6sningar p\u00e5 problemet eller gett n\u00e5got officiellt uttalande i fr\u00e5gan.<\/p>\n

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K\u00e4lla: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u043d\u0435\u0435 \u0432 \u044d\u0442\u043e\u043c \u043c\u0435\u0441\u044f\u0446\u0435 \u0441\u0442\u0430\u043b\u043e \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e \u043e\u0431 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0439 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 Intel, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u00abSpoiler\u00bb. \u0412\u044b\u044f\u0432\u0438\u0432\u0448\u0438\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0438, \u0447\u0442\u043e \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u044b AMD \u0438 ARM \u043d\u0435 \u0432\u043e\u0441\u043f\u0440\u0438\u0438\u043c\u0447\u0438\u0432\u044b \u043a \u043d\u0435\u0439. \u0422\u0435\u043f\u0435\u0440\u044c \u0436\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f AMD \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0430, \u0447\u0442\u043e \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043d\u044b\u043c \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044f\u043c Spoiler \u043d\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0443\u0433\u0440\u043e\u0437\u044b \u0434\u043b\u044f \u0435\u0451 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432. \u041a\u0430\u043a \u0438 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 Spectre \u0438 Meltdown, 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