{"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\/it\/blog\/novosti-interneta\/udalyonnaya-uyazimost-v-yadre-netbsd-ekspluatiruemaya-iz-lokalnoj-seti","title":{"rendered":"Vulnerabilit\u00e0 remota nel kernel NetBSD sfruttabile dalla rete locale","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In NetBSD risolto<\/a><\/noindex> una vulnerabilit\u00e0<\/a><\/noindex>, caused by a lack of boundary checking when processing jumbo frames in drivers for USB-connected network adapters. This issue leads to copying part of the packet beyond the buffer allocated in the mbuf cluster, which could potentially be exploited to execute malicious code at the kernel level by sending specific frames from the local network. A fix to block the vulnerability was issued on August 28, but details about the issue are only being disclosed now. The problem affects the atu, axe, axen, otus, run, and ure drivers.<\/p>\n

Meanwhile, in the TCP\/IP stack of Windows \u00e8 stata rilevata<\/a><\/noindex> critica una vulnerabilit\u00e0<\/a><\/noindex>, allowing to execute<\/a><\/noindex> malicious code remotely by sending an ICMPv6 packet with an IPv6 router advertisement (RA, Router Advertisement).
\nVulnerabilit\u00e0 si manifesta<\/a><\/noindex> A partire dall'aggiornamento 1709 per Windows 10 \/ Windows Server 2019, che ha introdotto il supporto per la trasmissione della configurazione DNS tramite pacchetti ICMPv6 RA, come definito nella specifica RFC 6106. Il problema \u00e8 causato da una cattiva allocazione del buffer per il contenuto del campo RDNSS quando si trasmettono valori di dimensioni non standard (la dimensione dei campi era interpretata come multipla di 16, il che ha portato a problemi di parsing e ha allocato 8 byte in meno di memoria, poich\u00e9 8 byte extra venivano considerati come appartenenti al campo successivo).<\/p>\n

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

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

\u0412 NetBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u0430\u044f \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0433\u0440\u0430\u043d\u0438\u0446 \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 jumbo-\u043a\u0430\u0434\u0440\u043e\u0432 \u0432 \u0434\u0440\u0430\u0439\u0432\u0435\u0440\u0430\u0445 \u0434\u043b\u044f \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u0430\u0434\u0430\u043f\u0442\u0435\u0440\u043e\u0432, \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0435\u043c\u044b\u0445 \u043f\u043e USB. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0447\u0430\u0441\u0442\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u044b \u0431\u0443\u0444\u0435\u0440\u0430, \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0432 \u043a\u043b\u0430\u0441\u0442\u0435\u0440\u0435 mbuf, \u0447\u0442\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u0433\u043e \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u043a\u0430\u0434\u0440\u043e\u0432 \u0438\u0437 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0439 \u0441\u0435\u0442\u0438. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 […]<\/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-96936","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47 Vulnerabilit\u00e0 remota nel kernel di NetBSD, sfruttabile dalla rete locale | ProHoster","description":"In NetBSD \u00e8 stata corretta una vulnerabilit\u00e0 causata dall'assenza di verifica dei limiti del buffer durante l'elaborazione di jumbo frame nei driver per adattatori di rete collegati tramite USB. Questo problema porta alla copia di parte del pacchetto oltre il buffer allocato nel cluster mbuf, il che pu\u00f2 potenzialmente essere utilizzato per eseguire codice dell'attaccante a livello di kernel inviando determinati frame dalla rete locale. 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