{"id":78908,"date":"2020-04-23T01:41:59","date_gmt":"2020-04-22T23:41:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw"},"modified":"2020-04-23T01:41:59","modified_gmt":"2020-04-22T23:41:59","slug":"vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw","title":{"rendered":"Se han solucionado las vulnerabilidades explotables a distancia en ipfw en FreeBSD.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En el filtro de paquetes ipfw <noindex><a rel=\"nofollow\" href=\"https:\/\/lists.freebsd.org\/pipermail\/freebsd-announce\/2020-April\/001945.html\">han sido solucionadas<\/a><\/noindex> se encontraron dos vulnerabilidades en el c\u00f3digo de an\u00e1lisis de opciones TCP, causadas por una verificaci\u00f3n incorrecta de datos en los paquetes de red procesados. La primera vulnerabilidad (CVE-2019-5614) al procesar paquetes TCP estructurados de una manera espec\u00edfica puede llevar al acceso a memoria fuera del b\u00fafer mbuf asignado, y la segunda (CVE-2019-15874) a acceder a \u00e1reas de memoria ya liberadas (uso despu\u00e9s de liberar). <\/p>\n<p>No se realiz\u00f3 un an\u00e1lisis de la idoneidad de los problemas identificados para la explotaci\u00f3n que podr\u00eda iniciar la ejecuci\u00f3n de c\u00f3digo malicioso, pero no se descarta que las vulnerabilidades puedan no limitarse a causar un fallo del n\u00facleo. Los problemas se corrigieron en las actualizaciones FreeBSD 11.3-RELEASE-p8 y 12.1-RELEASE-p4 (en las ramas estables, las correcciones se implementaron ya en diciembre del a\u00f1o pasado, pero se supo recientemente que estas correcciones est\u00e1n relacionadas con la eliminaci\u00f3n de la vulnerabilidad).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52783\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u0435 ipfw \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043e\u043f\u0446\u0438\u0439 TCP, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u0441\u0435\u0442\u0435\u0432\u044b\u0445 \u043f\u0430\u043a\u0435\u0442\u0430\u0445. \u041f\u0435\u0440\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2019-5614) \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 TCP-\u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0434\u043e\u0441\u0442\u0443\u043f\u0443 \u043a \u043f\u0430\u043c\u044f\u0442\u0438 \u0432\u043d\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430 mbuf, \u0430 \u0432\u0442\u043e\u0440\u0430\u044f (CVE-2019-15874) \u043a \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u044b\u043c \u043e\u0431\u043b\u0430\u0441\u0442\u044f\u043c \u043f\u0430\u043c\u044f\u0442\u0438 (use-after-free). \u0410\u043d\u0430\u043b\u0438\u0437 \u043f\u0440\u0438\u0433\u043e\u0434\u043d\u043e\u0441\u0442\u0438 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0434\u043b\u044f [&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-78908","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\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u0435 ipfw \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043e\u043f\u0446\u0438\u0439 TCP, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta 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\u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 ipfw | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u043f\u0430\u043a\u0435\u0442\u043d\u043e\u043c \u0444\u0438\u043b\u044c\u0442\u0440\u0435 ipfw \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u043a\u043e\u0434\u0435 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u043e\u043f\u0446\u0438\u0439 TCP, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/es\/blog\/news\/vo-freebsd-ustraneny-udalyonno-ekspluatiruemye-uyazvimosti-v-ipfw\" \/>\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\" 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