{"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\/sv\/blog\/news\/udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti","title":{"rendered":"Fj\u00e4rrs\u00e5rbarhet i k\u00e4rnan av NetBSD, utnyttjad fr\u00e5n det lokala n\u00e4tverket.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I NetBSD har \u00e5tg\u00e4rdats<\/a><\/noindex> s\u00e5rbarhet<\/a><\/noindex>, orsakad av avsaknad av gr\u00e4nskontroll vid hantering av jumbo-ramar i drivrutiner f\u00f6r n\u00e4tverksadaptrar som ansluts via USB. Problemet leder till att en del av paketet kopieras utanf\u00f6r den tilldelade bufferten i mbuf-klustret, vilket potentiellt kan anv\u00e4ndas f\u00f6r att exekvera angriparens kod p\u00e5 k\u00e4rnniv\u00e5 genom att skicka specifika ramar fr\u00e5n det lokala n\u00e4tverket. En fix f\u00f6r att blockera s\u00e5rbarheten inf\u00f6rdes den 28 augusti, men information om problemet offentliggjordes f\u00f6rst nu. Problemet p\u00e5verkar drivrutinerna atu, axe, axen, otus, run och ure.<\/p>\n

Under tiden, i TCP\/IP-stacken f\u00f6r Windows uppt\u00e4cktes<\/a><\/noindex> kritisk s\u00e5rbarhet<\/a><\/noindex>, som m\u00f6jligg\u00f6r att exekvera<\/a><\/noindex> angriparens kod genom att skicka ett ICMPv6-paket med IPv6-routerannonsering (RA, Router Advertisement).
\nS\u00e5rbarhet i LibreSSL.<\/a><\/noindex> Sedan uppdatering 1709 f\u00f6r Windows 10\/Windows Server 2019, d\u00e4r st\u00f6d f\u00f6r \u00f6verf\u00f6ring av DNS-konfiguration via ICMPv6 RA-paket inf\u00f6rdes, som definieras i RFC 6106-specifikationen. Problemet orsakas av felaktig buffertallokering f\u00f6r inneh\u00e5llet i RDNSS-f\u00e4ltet vid \u00f6verf\u00f6ring av v\u00e4rden med icke-standardiserade storlekar (storleken p\u00e5 f\u00e4lten tolkades som ett multipel av 16, vilket ledde till problem med tolkning och allokering av 8 byte mindre minne, eftersom de extra 8 byte togs som tillh\u00f6rande n\u00e4sta f\u00e4lt).<\/p>\n

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

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

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