{"id":33706,"date":"2019-10-31T21:54:17","date_gmt":"2019-10-31T18:54:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli\/"},"modified":"2019-10-31T21:54:17","modified_gmt":"2019-10-31T18:54:17","slug":"novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","title":{"rendered":"Den nye klasse af s\u00e5rbarheder i Intel-processorer risikerer at begrave Hyper-Threading: opdateringerne er blevet sendt ud","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Det synes, at efter de s\u00e5rbarheder, der blev opdaget for mere end et \u00e5r siden i Meltdown og Spectre, ikke skulle der v\u00e6re noget, der kan skr\u00e6mme tilh\u00e6ngere og brugere af Intel-processorer. Alligevel har virksomhederne endnu en gang form\u00e5et at overraske os. Mere pr\u00e6cist, det var forskere i s\u00e5rbarheder i mikroarkitekturen af Intel-processorer, der overvaskede os. Pakken af nye s\u00e5rbarheder<\/a><\/noindex> Under the general name microarchitectural data sampling (MDS), there is a threat to multi-threaded computing technology or Hyper-Threading (more generally, simultaneous multithreading, SMT). It has been revealed that an attack using one of the MDS variants can break the isolation of one of the Hyper-Threading threads and facilitate access to sensitive data in the processor buffers and ports (below the level of the first-level cache). What should be done about this? The first thing that comes to mind is to disable Hyper-Threading, which is exactly what the developers of ChromeOS did. What will happen to processor performance? It will decrease. The degree of slowdown can reach 40%, or even more.<\/p>\n

\"Den<\/p>\n

Indtil videre har f\u00e5 udviklere af operativsystemer og applikationer fulgt ChromeOS's eksempel, men opdateringer og patches kom ikke langsomt<\/a><\/noindex>. Apple har udsendt opdateringer til deres computere og laptops, der er solgt siden 2011. If\u00f8lge virksomheden er alle systemer under macOS Mojave 10.14 allerede patchet<\/a><\/noindex>This will prevent attacks through Safari and other applications. At the same time, most users should not feel a decrease in performance. However, complete prevention of the threat implies disabling Hyper-Threading, which may reduce performance by up to 40%. Patches for macOS Sierra and High Sierra will also be released. The vulnerabilities do not affect iPhone, iPad, and Watch products.<\/p>\n

Google forbereder patches til Android og vil opdatere Chrome. Det skal n\u00e6vnes, at Android kun skal beskyttes mod MDS-s\u00e5rbarheder p\u00e5 x86-kompatible platforme (for dette takker vi Intel for Atom-processorerne). Patches til smartphones og tablets p\u00e5 Intel-platforme skal udsendes af enhedsproducenterne, og Google er allerede klar til at distribuere den n\u00f8dvendige korrigerede kode til dette. Chromebooks (Chrome OS) er allerede beskyttede<\/a><\/noindex> patcher mod nye s\u00e5rbarheder, og p\u00e5 sigt vil operativsystemet selv blive rettet. Samtidig opfordrer Google brugerne til at sikre, at enhedsproducenterne har udsendt de n\u00f8dvendige patches og (eller) at disse patches er blevet givet til Microsoft og Apple som udviklere af operativsystemer. For cloudplatforme og datacentre har Google allerede spredt<\/a><\/noindex> patches til beskyttelse af serverprocessorer mod MDS.<\/p>\n

<\/center><\/p>\n

Browserudvikleren Mozilla pr\u00e6senterer patched versioner af applikationen den 21. maj. Dette vil v\u00e6re Firefox version 67 og Extended Support Release version 60.7. Firefox Beta og Firefox Nightly inkluderer allerede de n\u00f8dvendige rettelser til beskyttelse mod den nye s\u00e5rbarhed.<\/p>\n

\"Den<\/p>\n

Microsoft har ogs\u00e5 udsendt patches til operativsystemer og cloudplatforme. Dog anbefaler virksomheden at f\u00e5 den rettede mikrokode fra enhedsproducenterne, selvom de ogs\u00e5 har lavet en side<\/a><\/noindex> til selvst\u00e6ndig download af rettelser. Patches er ogs\u00e5 inkluderet i pakken med automatiske opdateringer via Windows Update og vil blive distribueret fra torsdag. Microsoft Azure-tjenesten er allerede beskyttet mod de nye s\u00e5rbarheder. Amazon AWS cloudtjenesten er ogs\u00e5 patcheret<\/a><\/noindex>.<\/p>\n

Endelig er der udgivet patches til s\u00e5danne Linux-operativsystemer som Red Hat<\/a><\/noindex> og Ubuntu<\/a><\/noindex>. F\u00f8lg med.<\/p>\n

<\/p>\n

<\/center><\/p>\n

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

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Og alligevel har virksomhederne igen form\u00e5et at overraske os.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/novyj-klass-uyazvimostej-protsessorov-intel-riskuet-pohoronit-hyper-threading-vyshli-zaplatki-vyklyuchateli","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","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\u041d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Intel \u0440\u0438\u0441\u043a\u0443\u0435\u0442 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