{"id":99573,"date":"2021-03-25T16:22:53","date_gmt":"2021-03-25T14:22:53","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-samba-4-14-2-4-13-7-i-4-12-14-s-ustraneniem-uyazvimostej"},"modified":"2021-03-25T16:22:53","modified_gmt":"2021-03-25T14:22:53","slug":"obnovlenie-samba-4-14-2-4-13-7-i-4-12-14-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-samba-4-14-2-4-13-7-i-4-12-14-s-ustraneniem-uyazvimostej","title":{"rendered":"Actualizaci\u00f3n de Samba 4.14.2, 4.13.7 y 4.12.14 con correcci\u00f3n de vulnerabilidades","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se han preparado versiones correctivas de los paquetes Samba 4.14.2, 4.13.7 y 4.12.14, que solucionan dos vulnerabilidades:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2020-27840 \u2014 desbordamiento de b\u00fafer que ocurre al procesar nombres DN (Nombre Distinguido) especialmente dise\u00f1ados. Un atacante an\u00f3nimo puede causar el bloqueo del servidor AD DC LDAP basado en Samba enviando una solicitud bind especialmente dise\u00f1ada. Dado que durante el ataque hay la posibilidad de controlar el \u00e1rea de sobrescritura, no se excluyen consecuencias m\u00e1s graves, como la ejecuci\u00f3n de su propio c\u00f3digo en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-dronten\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2615\">servidor<\/a>, pero actualmente no hay un exploit operativo. Dado que el c\u00f3digo que causa la vulnerabilidad para analizar la cadena DN se ejecuta en una etapa anterior a la verificaci\u00f3n de par\u00e1metros de autenticaci\u00f3n, un atacante sin cuenta puede explotar el problema en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-newyork\/\"   title=\"servidor\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2661\">servidor<\/a>.\n<li class=\"l\"> CVE-2021-20277 \u2014 lectura fuera de los l\u00edmites del b\u00fafer al procesar en el servidor AD DC LDAP un filtro dise\u00f1ado por el usuario. El problema puede llevar al bloqueo del manejador del servidor o a la fuga de contenido de la memoria del proceso.      <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54827\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.14.2, 4.13.7 \u0438 4.12.14, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2020-27840 &#8212; \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u044e\u0449\u0435\u0435 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0438\u043c\u0451\u043d DN (Distinguished Name). \u0410\u043d\u043e\u043d\u0438\u043c\u043d\u044b\u0439 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0437\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 AD DC LDAP \u043d\u0430 \u0431\u0430\u0437\u0435 Samba \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e bind-\u0437\u0430\u043f\u0440\u043e\u0441\u0430. \u0422\u0430\u043a \u043a\u0430\u043a \u0432 \u0445\u043e\u0434\u0435 \u0430\u0442\u0430\u043a\u0438 \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0438, \u043d\u0435 [&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-99573","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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desbordamiento de b\u00fafer que ocurre al procesar especialmente formateados.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-samba-4-14-2-4-13-7-i-4-12-14-s-ustraneniem-uyazvimostej","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\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Samba 4.14.2, 4.13.7 \u0438 4.12.14 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 | ProHoster","og:description":"\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.14.2, 4.13.7 \u0438 4.12.14, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2020-27840 - 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