{"id":99578,"date":"2021-03-26T04:22:43","date_gmt":"2021-03-26T02:22:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-openssl-1-1-1k-s-ustraneniem-dvuh-opasnyh-uyazvimostej"},"modified":"2021-03-26T04:22:43","modified_gmt":"2021-03-26T02:22:43","slug":"obnovlenie-openssl-1-1-1k-s-ustraneniem-dvuh-opasnyh-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-openssl-1-1-1k-s-ustraneniem-dvuh-opasnyh-uyazvimostej","title":{"rendered":"Actualizaci\u00f3n de OpenSSL 1.1.1k que soluciona dos vulnerabilidades cr\u00edticas.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Est\u00e1 disponible una versi\u00f3n corregida de la biblioteca criptogr\u00e1fica OpenSSL 1.1.1k, en la que se han solucionado dos vulnerabilidades clasificadas como de alto riesgo:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-3450 \u2014 la posibilidad de eludir la verificaci\u00f3n del certificado de la autoridad certificadora al habilitar la opci\u00f3n X509_V_FLAG_X509_STRICT, que est\u00e1 desactivada por defecto y se aplica para una verificaci\u00f3n adicional de la presencia de certificados en la cadena. El problema fue introducido en la implementaci\u00f3n de una nueva verificaci\u00f3n en OpenSSL 1.1.1h, que proh\u00edbe el uso de certificados en la cadena que tienen par\u00e1metros de curva el\u00edptica codificados expl\u00edcitamente.\n<p>Debido a un error en el c\u00f3digo, la nueva verificaci\u00f3n sobrescribi\u00f3 el resultado de la verificaci\u00f3n previa de la validez del certificado de la autoridad certificadora. Como resultado, los certificados firmados por un certificado autodimitido, que no est\u00e1 vinculado a la cadena de confianza con la autoridad certificadora, se procesaban como completamente confiables. La vulnerabilidad no se manifiesta si se establece el par\u00e1metro \u00abpurpose\u00bb, que se establece de manera predeterminada en los procedimientos de verificaci\u00f3n de certificados de cliente y servidor en libssl (utilizado para TLS).      <\/p>\n<li class=\"l\"> CVE-2021-3449 \u2014 la posibilidad de provocar un fallo <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-los-angeles\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3686\">servidores<\/a> TLS a trav\u00e9s del env\u00edo por parte del cliente de un mensaje ClientHello especialmente dise\u00f1ado. El problema est\u00e1 relacionado con el desreferenciamiento de un puntero NULL en la implementaci\u00f3n de la extensi\u00f3n signature_algorithms. El problema se manifiesta solo en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-gdansk\/\"   title=\"como en entornos de nube p\u00fablicos o privados.\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4513\">como en entornos de nube p\u00fablicos o privados.<\/a> con soporte para TLSv1.2 y con la re-negociaci\u00f3n de la conexi\u00f3n permitida (activado por defecto).      <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54833\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043a\u0440\u0438\u043f\u0442\u043e\u0433\u0440\u0430\u0444\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 OpenSSL 1.1.1k , \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0432\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438: CVE-2021-3450 &#8212; \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u0445\u043e\u0434\u0430 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430 \u0443\u0434\u043e\u0441\u0442\u043e\u0432\u0435\u0440\u044f\u044e\u0449\u0435\u0433\u043e \u0446\u0435\u043d\u0442\u0440\u0430 \u043f\u0440\u0438 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u0444\u043b\u0430\u0433\u0430 X509_V_FLAG_X509_STRICT, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0442\u043a\u043b\u044e\u0447\u0451\u043d \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 \u0432 \u0446\u0435\u043f\u043e\u0447\u043a\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u043d\u0435\u0441\u0435\u043d\u0430 \u0432 \u043f\u043e\u044f\u0432\u0438\u0432\u0448\u0435\u0439\u0441\u044f \u0432 OpenSSL 1.1.1h \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043d\u043e\u0432\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438, \u0437\u0430\u043f\u0440\u0435\u0449\u0430\u044e\u0449\u0435\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\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-99578","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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