{"id":96936,"date":"2020-10-15T02:42:39","date_gmt":"2020-10-15T00:42:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti"},"modified":"2020-10-15T02:42:39","modified_gmt":"2020-10-15T00:42:39","slug":"udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti","title":{"rendered":"Vzd\u00e1len\u00e1 zranitelnost v j\u00e1d\u0159e NetBSD, vyko\u0159is\u0165ovan\u00e1 z lok\u00e1ln\u00ed s\u00edt\u011b.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

V NetBSD odstran\u011bna<\/a><\/noindex> zranitelnost<\/a><\/noindex>, vyvolan\u00e1 absenc\u00ed kontroly mez\u00ed bufferu p\u0159i zpracov\u00e1n\u00ed jumbo r\u00e1mc\u016f v ovlada\u010d\u00edch pro s\u00ed\u0165ov\u00e9 adapt\u00e9ry p\u0159ipojen\u00e9 p\u0159es USB. Probl\u00e9m vede ke kop\u00edrov\u00e1n\u00ed \u010d\u00e1sti paketu mimo vyhrazen\u00fd buffer v clusteru mbuf, co\u017e m\u016f\u017ee potenci\u00e1ln\u011b vyu\u017e\u00edt \u00fato\u010dn\u00edk pro spu\u0161t\u011bn\u00ed k\u00f3du na \u00farovni j\u00e1dra prost\u0159ednictv\u00edm zas\u00edl\u00e1n\u00ed ur\u010dit\u00fdch r\u00e1mc\u016f z m\u00edstn\u00ed s\u00edt\u011b. Oprava pro blokov\u00e1n\u00ed zranitelnosti byla provedena 28. srpna, ale informace o probl\u00e9mu byly zve\u0159ejn\u011bny a\u017e nyn\u00ed. Probl\u00e9m se dot\u00fdk\u00e1 ovlada\u010d\u016f atu, axe, axen, otus, run a ure.<\/p>\n

Mezit\u00edm, v TCP\/IP z\u00e1sobn\u00edku Windows byla odhalena<\/a><\/noindex> kritick\u00e1 zranitelnost<\/a><\/noindex>, umo\u017e\u0148uj\u00edc\u00ed na d\u00e1lku spustit<\/a><\/noindex> k\u00f3d \u00fato\u010dn\u00edka prost\u0159ednictv\u00edm zas\u00edl\u00e1n\u00ed ICMPv6 paketu s ozn\u00e1men\u00edm routeru IPv6 (RA, Router Advertisement).
\nZranitelnost se projevuje<\/a><\/noindex> od aktualizace 1709 pro Windows 10\/Windows Server 2019, ve kter\u00e9 byla p\u0159edstavena podpora p\u0159ed\u00e1v\u00e1n\u00ed konfigurace DNS prost\u0159ednictv\u00edm paketu ICMPv6 RA, definovan\u00e9ho ve specifikaci RFC 6106. Probl\u00e9m je zp\u016fsoben nespr\u00e1vn\u00fdm alokov\u00e1n\u00edm bufferu pro obsah pole RDNSS p\u0159i p\u0159enosu nestandardn\u00edch velikost\u00ed hodnoty (velikost pol\u00ed byla interpretov\u00e1na jako n\u00e1sobek 16, co\u017e vedlo k probl\u00e9m\u016fm s anal\u00fdzou a alokovalo se o 8 bajt\u016f m\u00e9n\u011b pam\u011bti, proto\u017ee zb\u00fdvaj\u00edc\u00edch 8 bajt\u016f bylo ch\u00e1p\u00e1no jako pat\u0159\u00edc\u00ed k n\u00e1sleduj\u00edc\u00edmu poli).<\/p>\n

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

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

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