{"id":104289,"date":"2022-06-06T09:36:38","date_gmt":"2022-06-06T07:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter"},"modified":"2022-06-06T09:36:38","modified_gmt":"2022-06-06T07:36:38","slug":"eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter","title":{"rendered":"Otra vulnerabilidad en el subsistema del n\u00facleo Linux Netfilter.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha descubierto una vulnerabilidad en el subsistema del n\u00facleo Netfilter (CVE-2022-1972), similar a un problema revelado a finales de mayo. Esta nueva vulnerabilidad tambi\u00e9n permite a un usuario local obtener privilegios de root en el sistema mediante manipulaciones en las reglas de nftables y requiere acceso a nftables, que se puede obtener en un espacio de nombres separado (network namespace o user namespace) si se tienen derechos CLONE_NEWUSER, CLONE_NEWNS o CLONE_NEWNET (por ejemplo, cuando se puede ejecutar un contenedor aislado).     <\/p>\n<p>El problema se debe a un error en el c\u00f3digo para manejar listas set con campos que incluyen varios rangos, lo que lleva a escribir m\u00e1s all\u00e1 del \u00e1rea de memoria asignada al procesar par\u00e1metros de lista especialmente formateados. Los investigadores lograron preparar un exploit funcional para obtener privilegios de root en Ubuntu 21.10 con el n\u00facleo 5.13.0-39-generic. La vulnerabilidad se presenta desde el n\u00facleo 5.6. Se ha propuesto una correcci\u00f3n en forma de parche. Para bloquear la explotaci\u00f3n de la vulnerabilidad en sistemas normales, se debe asegurar que la creaci\u00f3n de espacios de nombres por usuarios no privilegiados est\u00e9 desactivada (\"sudo sysctl -w kernel.unprivileged_userns_clone=0\").    <\/p>\n<p>Adem\u00e1s, se han publicado detalles sobre tres vulnerabilidades en el n\u00facleo relacionadas con el subsistema NFC. Las vulnerabilidades permiten provocar un fallo a trav\u00e9s de acciones realizadas por un usuario no privilegiado (los vectores de ataque m\u00e1s peligrosos a\u00fan no se han demostrado):  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-1734 \u2014 acceso a memoria ya liberada (use-after-free) en el controlador nfcmrvl (drivers\/nfc\/nfcmrvl), que se manifiesta al simular un dispositivo NFC en el espacio de usuario.\n<li class=\"l\"> CVE-2022-1974 \u2014 acceso a memoria ya liberada en las funciones netlink para dispositivos NFC (\/net\/nfc\/core.c), que se manifiesta al registrar un nuevo dispositivo. Al igual que la vulnerabilidad anterior, este problema puede ser explotado mediante la simulaci\u00f3n de un dispositivo NFC en el espacio de usuario.\n<li class=\"l\"> CVE-2022-1975 \u2014 error en el c\u00f3digo de carga de firmware para dispositivos NFC, que se puede utilizar para provocar un estado de \"panic\".    <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57305\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Netfilter \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1972), \u043f\u043e\u0445\u043e\u0436\u0430\u044f \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0443\u044e \u0432 \u043a\u043e\u043d\u0446\u0435 \u043c\u0430\u044f. \u041d\u043e\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0447\u0435\u0440\u0435\u0437 \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u044f\u0446\u0438\u0438 \u0441 \u043f\u0440\u0430\u0432\u0438\u043b\u0430\u043c\u0438 \u0432 nftables \u0438 \u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \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 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u0438\u043c\u0451\u043d (network namespace \u0438\u043b\u0438 user namespace) \u043f\u0440\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u043f\u0440\u0430\u0432 CLONE_NEWUSER, [&hellip;]<\/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-104289","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Netfilter \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1972), \u043f\u043e\u0445\u043e\u0436\u0430\u044f \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0443\u044e \u0432 \u043a\u043e\u043d\u0446\u0435 \u043c\u0430\u044f.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/es\/blog\/news\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2\" \/>\n\t\t<meta property=\"og:locale\" content=\"es_ES\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0415\u0449\u0451 \u043e\u0434\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Linux Netfilter | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Netfilter \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1972), \u043f\u043e\u0445\u043e\u0436\u0430\u044f \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0443\u044e \u0432 \u043a\u043e\u043d\u0446\u0435 \u043c\u0430\u044f.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/es\/blog\/news\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter\" \/>\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=\"2022-06-06T07:36:38+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2022-06-06T07:36:38+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\udd47Otra vulnerabilidad en el subsistema del n\u00facleo Linux Netfilter | ProHoster","description":"Se ha descubierto una vulnerabilidad en el subsistema del n\u00facleo Netfilter (CVE-2022-1972), similar a un problema revelado a finales de mayo.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","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\u0415\u0449\u0451 \u043e\u0434\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Linux Netfilter | ProHoster","og:description":"\u0412 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u044f\u0434\u0440\u0430 Netfilter \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-1972), \u043f\u043e\u0445\u043e\u0436\u0430\u044f \u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0440\u0430\u0441\u043a\u0440\u044b\u0442\u0443\u044e \u0432 \u043a\u043e\u043d\u0446\u0435 \u043c\u0430\u044f.","og:url":"https:\/\/prohoster.info\/es\/blog\/news\/eshhyo-odna-uyazvimost-v-podsisteme-yadra-linux-netfilter","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-06-06T07:36:38+00:00","article:modified_time":"2022-06-06T07:36:38+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"104289","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-25 11:33:19","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2022-06-06 07:37:01","updated":"2026-01-25 11:33:19","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts\/104289","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/comments?post=104289"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/posts\/104289\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/media?parent=104289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/categories?post=104289"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/es\/wp-json\/wp\/v2\/tags?post=104289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}