{"id":35556,"date":"2019-10-31T22:04:59","date_gmt":"2019-10-31T19:04:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/v-openssh-dobavlena-zashhita-ot-atak-po-storonnim-kanalam\/"},"modified":"2019-10-31T22:04:59","modified_gmt":"2019-10-31T19:04:59","slug":"v-openssh-dobavlena-zashhita-ot-atak-po-storonnim-kanalam","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/v-openssh-dobavlena-zashhita-ot-atak-po-storonnim-kanalam","title":{"rendered":"I OpenSSH har skydd mot attacker via sidokanaler lagts till","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Damien Miller (djm @) lades till<\/a><\/noindex> I OpenSSH har en f\u00f6rb\u00e4ttring lagts till som b\u00f6r hj\u00e4lpa till att skydda mot olika attacker via sidokanaler, s\u00e5som Spectre, Meltdown<\/a><\/noindex>, RowHammer<\/a><\/noindex> och RAMBleed<\/a><\/noindex>. Det tillagda skyddet syftar till att f\u00f6rhindra \u00e5tervinning av den privata nyckeln som finns i minnet genom att anv\u00e4nda sidokanaler f\u00f6r datal\u00e4ckage.<\/p>\n

\u0421\u0443\u0442\u044c \u0437\u0430\u0449\u0438\u0442\u044b \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u044b\u0435 \u043a\u043b\u044e\u0447\u0438, \u0432 \u043c\u043e\u043c\u0435\u043d\u0442\u044b, \u043a\u043e\u0433\u0434\u0430 \u043e\u043d\u0438 \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f, \u0437\u0430\u0448\u0438\u0444\u0440\u043e\u0432\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0441\u0438\u043c\u043c\u0435\u0442\u0440\u0438\u0447\u043d\u043e\u0433\u043e \u043a\u043b\u044e\u0447\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043e\u043b\u0443\u0447\u0435\u043d \u0438\u0437 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e «\u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u043b\u044e\u0447\u0430» (prekey), \u0441\u043e\u0441\u0442\u043e\u044f\u0449\u0435\u0433\u043e \u0438\u0437 \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 (\u0432 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0435\u0433\u043e \u0440\u0430\u0437\u043c\u0435\u0440 — 16 \u041a\u0411).
\nN\u00e4r det g\u00e4ller implementeringen krypteras privata nycklar vid inl\u00e4sning i minnet och avkrypteras automatiskt och transparent n\u00e4r de anv\u00e4nds f\u00f6r signaturer eller vid lagring\/s serialisering.<\/p>\n

F\u00f6r att en attack ska lyckas m\u00e5ste angriparna \u00e5tervinna hela prekey med h\u00f6g precision innan de kan f\u00f6rs\u00f6ka dekryptera den skyddade privata nyckeln. Den nuvarande generationen av attacker har emellertid en s\u00e5dan frekvens av felaktig \u00e5tervinning av bitar att dessa fel g\u00f6r en korrekt \u00e5tervinning av f\u00f6rhandsnyckeln osannolik.<\/p>\n

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

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

\u0414\u044d\u043c\u0438\u0435\u043d \u041c\u0438\u043b\u043b\u0435\u0440 (djm @) \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0432 OpenSSH \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0435, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0434\u043e\u043b\u0436\u043d\u043e \u043f\u043e\u043c\u043e\u0447\u044c \u0437\u0430\u0449\u0438\u0442\u0438\u0442\u044c \u043e\u0442 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0430\u0442\u0430\u043a \u043f\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u043c \u043a\u0430\u043d\u0430\u043b\u0430\u043c, \u0442\u0430\u043a\u0438\u043c \u043a\u0430\u043a Spectre, Meltdown, RowHammer \u0438 RAMBleed. \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u0437\u0430\u0449\u0438\u0442\u0430 \u043f\u0440\u0438\u0437\u0432\u0430\u043d\u0430 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0442\u0438\u0442\u044c \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u043e\u0433\u043e \u043a\u043b\u044e\u0447\u0430, \u043d\u0430\u0445\u043e\u0434\u044f\u0449\u0435\u0433\u043e\u0441\u044f \u0432 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438, \u043f\u043e\u043b\u044c\u0437\u0443\u044f\u0441\u044c \u0443\u0442\u0435\u0447\u043a\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043f\u043e \u0441\u0442\u043e\u0440\u043e\u043d\u043d\u0438\u043c \u043a\u0430\u043d\u0430\u043b\u0430\u043c. \u0421\u0443\u0442\u044c \u0437\u0430\u0449\u0438\u0442\u044b \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u0430\u0442\u043d\u044b\u0435 \u043a\u043b\u044e\u0447\u0438, \u0432 \u043c\u043e\u043c\u0435\u043d\u0442\u044b, \u043a\u043e\u0433\u0434\u0430 \u043e\u043d\u0438 \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\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-35556","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\udd47Skydd mot attacker via sidokanaler har lagts till i OpenSSH | ProHoster","description":"Damien Miller (djm @) lade till en f\u00f6rb\u00e4ttring i OpenSSH som b\u00f6r hj\u00e4lpa till att skydda mot olika attacker via 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