{"id":103645,"date":"2022-03-29T15:37:18","date_gmt":"2022-03-29T13:37:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-vyyavleny-ekspluatiruemye-uyazvimosti-v-nf_tables-watch_queue-i-ipsec"},"modified":"2022-03-29T15:37:18","modified_gmt":"2022-03-29T13:37:19","slug":"v-yadre-linux-vyyavleny-ekspluatiruemye-uyazvimosti-v-nf_tables-watch_queue-i-ipsec","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/v-yadre-linux-vyyavleny-ekspluatiruemye-uyazvimosti-v-nf_tables-watch_queue-i-ipsec","title":{"rendered":"Sono state identificate vulnerabilit\u00e0 sfruttabili nel kernel di Linux in nf_tables, watch_queue e IPsec","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nel kernel di Linux sono state individuate diverse vulnerabilit\u00e0 critiche che consentono a un utente locale di elevare i propri privilegi nel sistema. Sono stati preparati prototipi funzionanti di exploit per tutte le problematiche considerate.    <\/p>\n<ul>\n<li class=\"l\"> \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c  (CVE-2022-0995) \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0441\u043e\u0431\u044b\u0442\u0438\u0439 watch_queue, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u043e\u043c \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430. \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u043b\u044e\u0431\u044b\u043c \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0438 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0437\u0430\u043f\u0443\u0441\u043a\u0443 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 watch_queue_set_size()  \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043f\u043e\u043f\u044b\u0442\u043a\u043e\u0439  \u043e\u0447\u0438\u0441\u0442\u043a\u0438 \u0432\u0441\u0435\u0445 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0435\u0439 \u0432 \u0441\u043f\u0438\u0441\u043a\u0435, \u0434\u0430\u0436\u0435 \u0435\u0441\u043b\u0438 \u0434\u043b\u044f \u043d\u0438\u0445 \u043d\u0435 \u0431\u044b\u043b\u0430 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0430 \u043f\u0430\u043c\u044f\u0442\u044c. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u044f\u0434\u0440\u0430 \u0441 \u043e\u043f\u0446\u0438\u0435\u0439 &#171;CONFIG_WATCH_QUEUE=y&#187;, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u043e\u0432 Linux.\n<p>La vulnerabilit\u00e0 \u00e8 stata risolta con una modifica aggiunta al kernel l'11 marzo. \u00c8 possibile monitorare la pubblicazione degli aggiornamenti dei pacchetti nelle distribuzioni sulle seguenti pagine: Debian, SUSE, Ubuntu, RHEL, Fedora, Gentoo, Arch Linux. Il prototipo dell'exploit \u00e8 gi\u00e0 disponibile pubblicamente e consente di ottenere l'accesso root quando viene eseguito su Ubuntu 21.10 con il kernel 5.13.0-37.      <center><img decoding=\"async\" alt=\"Sono state identificate vulnerabilit\u00e0 sfruttabili nel kernel di Linux in nf_tables, watch_queue e IPsec\" src=\"\/wp-content\/uploads\/2022\/03\/9cdfd5bdf66d257757d1a4c600b96249.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<li class=\"l\"> Una vulnerabilit\u00e0 (CVE-2022-27666) nei moduli del kernel esp4 ed esp6 che implementano le trasformazioni ESP (Encapsulating Security Payload) per IPsec, utilizzate con IPv4 e IPv6. La vulnerabilit\u00e0 consente a un utente locale con privilegi normali di sovrascrivere oggetti nella memoria del kernel e di aumentare i propri privilegi nel sistema. Il problema \u00e8 causato dalla mancanza di convalida tra la dimensione di memoria allocata e i dati effettivamente ricevuti, poich\u00e9 la dimensione massima del messaggio potrebbe superare la dimensione massima di memoria allocata per la struttura skb_page_frag_refill.\n<p>La vulnerabilit\u00e0 \u00e8 stata corretta nel kernel il 7 marzo (risolta nelle versioni 5.17, 5.16.15 e successivi). Puoi seguire la pubblicazione degli aggiornamenti dei pacchetti nelle distribuzioni su queste pagine: Debian, SUSE, Ubuntu, RHEL, Fedora, Gentoo, Arch Linux. Un prototipo funzionante dell'exploit, che consente a un utente normale di ottenere accesso root su Ubuntu Desktop 21.10 nella configurazione predefinita, \u00e8 gi\u00e0 stato pubblicato su GitHub. Si sostiene che, con lievi modifiche, l'exploit sar\u00e0 funzionante anche su Fedora e Debian. \u00c8 interessante notare che l'exploit \u00e8 stato originariamente preparato per la competizione pwn2own 2022, ma gli sviluppatori del kernel hanno individuato e corretto l'errore associato, quindi \u00e8 stata presa la decisione di rivelare i dettagli della vulnerabilit\u00e0.      <center>  <video controls=\"\" style=\"width: 720px; height: 480px; max-width:100%\" src=\"https:\/\/etenal.me\/wp-content\/uploads\/2022\/03\/yes_root.mp4\" ><source src=\"https:\/\/etenal.me\/wp-content\/uploads\/2022\/03\/yes_root.mp4\" type=\"video\/mp4\"><\/video><\/center>    <\/p>\n<li class=\"l\"> Due vulnerabilit\u00e0 (CVE-2022-1015, CVE-2022-1016) nel sottosistema netfilter nel modulo nf_tables, che gestisce il filtraggio dei pacchetti nftables. Il primo problema consente a un utente non privilegiato locale di ottenere la scrittura oltre il buffer assegnato nello stack. Il buffer overflow si verifica quando vengono elaborati espressioni nftables formattate in un certo modo, gestite durante il controllo degli indici forniti dall'utente, che ha accesso alle regole nftables.\n<p>\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u043b\u0438, \u0447\u0442\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 &#171;enum nft_registers reg&#187; \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043e\u0434\u043d\u0438\u043c \u0431\u0430\u0439\u0442\u043e\u043c, \u0432 \u0442\u043e \u0432\u0440\u0435\u043c\u044f \u043a\u0430\u043a \u043f\u0440\u0438 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0439 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0441\u043e \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0435\u0439 C89 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0434\u043b\u044f \u043d\u0435\u0433\u043e 32-\u0440\u0430\u0437\u0440\u044f\u0434\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435. \u0418\u0437-\u0437\u0430 \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0439 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0439 \u043f\u0440\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0435 \u0438 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u0438\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u0440\u0430\u0437\u043c\u0435\u0440 \u043d\u0435 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u043c\u0443 \u0440\u0430\u0437\u043c\u0435\u0440\u0443 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0435, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u043d\u0430\u043b\u043e\u0436\u0435\u043d\u0438\u044e \u0445\u0432\u043e\u0441\u0442\u0430 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u043d\u0430 \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0438 \u0432 \u0441\u0442\u0435\u043a\u0435.    <\/p>\n<p>\u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430, \u043d\u043e \u0434\u043b\u044f \u0443\u0441\u043f\u0435\u0448\u043d\u043e\u0439 \u0430\u0442\u0430\u043a\u0438 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a nftables, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u043c \u0441\u0435\u0442\u0435\u0432\u043e\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u0438\u043c\u0451\u043d (network namespaces) \u043f\u0440\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u043f\u0440\u0430\u0432 CLONE_NEWUSER \u0438\u043b\u0438 CLONE_NEWNET (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0442\u0430\u043a\u0436\u0435 \u0442\u0435\u0441\u043d\u043e \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u043c\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u043e\u043c \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u043a\u043b\u044e\u0447\u0430\u044e\u0442\u0441\u044f \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 &#171;CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE=y&#187;. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u0430 \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u044f\u0434\u0440\u0430 Linux 5.12.    <\/p>\n<p>La seconda vulnerabilit\u00e0 in netfilter \u00e8 causata dall'accesso a una memoria gi\u00e0 rilasciata (use-after-free) nel gestore nft_do_chain e pu\u00f2 portare a una perdita di aree di memoria non inizializzate del kernel, che possono essere lette tramite manipolazioni delle espressioni nftables e utilizzate, ad esempio, per determinare gli indirizzi dei puntatori nello sviluppo di exploit per altre vulnerabilit\u00e0. Sfruttare la vulnerabilit\u00e0 \u00e8 possibile a partire dal kernel Linux 5.13.    <\/p>\n<p>Le vulnerabilit\u00e0 sono state corrette negli aggiornamenti correttivi di oggi per i kernel 5.17.1, 5.16.18, 5.15.32, 5.10.109, 5.4.188, 4.19.237, 4.14.274 e 4.9.309. \u00c8 possibile monitorare la pubblicazione degli aggiornamenti dei pacchetti nelle distribuzioni presso le seguenti pagine: Debian, SUSE, Ubuntu, RHEL, Fedora, Gentoo, Arch Linux. Il ricercatore che ha individuato i problemi ha dichiarato di aver preparato exploit funzionanti per entrambe le vulnerabilit\u00e0, che si prevede saranno pubblicati tra qualche giorno, dopo che le distribuzioni rilasceranno aggiornamenti dei pacchetti con il kernel.      <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56931\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u044f\u0434\u0440\u0435 Linux \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043e\u043f\u0430\u0441\u043d\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0414\u043b\u044f \u0432\u0441\u0435\u0445 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u0440\u0430\u0431\u043e\u0447\u0438\u0435 \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f\u044b \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u043e\u0432. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-0995) \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u043d\u0438\u044f \u0441\u043e\u0431\u044b\u0442\u0438\u0439 watch_queue, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0437\u0430\u043f\u0438\u0441\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u043e\u043c \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430. \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u043b\u044e\u0431\u044b\u043c \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0438 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0437\u0430\u043f\u0443\u0441\u043a\u0443 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 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\u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 nf_tables, watch_queue \u0438 IPsec | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u044f\u0434\u0440\u0435 Linux \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043e\u043f\u0430\u0441\u043d\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0414\u043b\u044f \u0432\u0441\u0435\u0445 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c 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\u0431\u044b\u0442\u044c \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0430 \u043b\u044e\u0431\u044b\u043c \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0438 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0437\u0430\u043f\u0443\u0441\u043a\u0443 \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/v-yadre-linux-vyyavleny-ekspluatiruemye-uyazvimosti-v-nf_tables-watch_queue-i-ipsec\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2022-03-29T13:37:19+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-03-29T13:37:19+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Sono state identificate vulnerabilit\u00e0 sfruttabili nel kernel Linux in nf_tables, watch_queue e IPsec | ProHoster","description":"Nel kernel Linux sono state scoperte diverse vulnerabilit\u00e0 pericolose che consentono a un utente locale di aumentare i propri privilegi nel sistema. Sono stati preparati prototipi funzionali di exploit per tutte le problematiche prese in considerazione. La vulnerabilit\u00e0 (CVE-2022-0995) nel sottosistema di monitoraggio degli eventi watch_queue porta alla scrittura di dati nell'area di memoria del kernel al di fuori del buffer allocato. L'attacco pu\u00f2 essere effettuato da qualsiasi utente non privilegiato e comportare l'esecuzione del proprio codice.","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/v-yadre-linux-vyyavleny-ekspluatiruemye-uyazvimosti-v-nf_tables-watch_queue-i-ipsec","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412 \u044f\u0434\u0440\u0435 Linux \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u044b\u0435 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