{"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\/de\/blog\/news\/udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti","title":{"rendered":"Remote Vulnerabilit\u00e4t im NetBSD-Kernel, die aus dem lokalen Netzwerk ausgenutzt werden kann","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In NetBSD behoben<\/a><\/noindex> eine Schwachstelle<\/a><\/noindex>, verursacht durch fehlende Puffergrenzenpr\u00fcfung bei der Verarbeitung von Jumbo-Frames in Treibern f\u00fcr \u00fcber USB verbundene Netzwerkadapter. Das Problem f\u00fchrt dazu, dass Teile von Paketen \u00fcber den im mbuf-Cluster zugewiesenen Puffer hinaus kopiert werden, was potenziell ausgenutzt werden kann, um Angreifer-Code auf Kernel-Ebene auszuf\u00fchren, indem bestimmte Frames aus dem lokalen Netzwerk gesendet werden. Die Behebung zur Blockierung dieser Sicherheitsanf\u00e4lligkeit wurde am 28. August implementiert, aber Informationen \u00fcber das Problem wurden erst jetzt ver\u00f6ffentlicht. Das Problem betrifft die Treiber atu, axe, axen, otus, run und ure.<\/p>\n

Unterdessen im TCP\/IP-Stack von Windows entdeckt<\/a><\/noindex> kritische eine Schwachstelle<\/a><\/noindex>, erm\u00f6glicht es ferngesteuert<\/a><\/noindex> Angreifer-Code \u00fcber das Senden eines ICMPv6-Pakets mit einer IPv6-Router-Ank\u00fcndigung (RA, Router Advertisement) auszuf\u00fchren.
\nSchwachstelle zeigt sich<\/a><\/noindex> seit dem Update 1709 f\u00fcr Windows 10\/Windows Server 2019, das die Unterst\u00fctzung f\u00fcr die \u00dcbertragung von DNS-Konfigurationsinformationen \u00fcber ICMPv6 RA-Pakete, wie sie in der Spezifikation RFC 6106 definiert sind, eingef\u00fchrt hat. Das Problem wird durch eine falsche Pufferzuweisung f\u00fcr den Inhalt des RDNSS-Feldes verursacht, wenn nicht standardisierte Gr\u00f6\u00dfenwerte \u00fcbergeben werden (die Gr\u00f6\u00dfe der Felder wurde als Vielfaches von 16 interpretiert, was zu Problemen mit der Analyse und einer um 8 Byte geringeren Zuweisung von Speicher f\u00fchrt, da die zus\u00e4tzlichen 8 Byte als zum n\u00e4chsten Feld geh\u00f6rend angesehen wurden).<\/p>\n

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

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

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