{"id":182651,"date":"2026-07-16T04:53:25","date_gmt":"2026-07-16T02:53:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-nginx-1-31-3-s-ustraneniem-rce-uyazvimosti"},"modified":"2026-07-16T04:53:25","modified_gmt":"2026-07-16T02:53:25","slug":"obnovlenie-nginx-1-31-3-s-ustraneniem-rce-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/obnovlenie-nginx-1-31-3-s-ustraneniem-rce-uyazvimosti","title":{"rendered":"Actualizaci\u00f3n de nginx 1.31.3 corrigiendo la vulnerabilidad RCE","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha formado la versi\u00f3n principal de nginx 1.31.3, en la que se contin\u00faa el desarrollo de nuevas funcionalidades, as\u00ed como la publicaci\u00f3n de la rama estable soportada en paralelo nginx 1.30.4, en la que solo se realizan cambios relacionados con la correcci\u00f3n de errores graves y vulnerabilidades. Se han solucionado 3 vulnerabilidades en las actualizaciones:    <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-42533 \u2014 desbordamiento de b\u00fafer que se manifiesta al usar la directiva \u00abmap\u00bb para verificaciones a trav\u00e9s de expresiones regulares con sustituciones mediante variables no nombradas (por ejemplo, $1 y $2) o variables nombradas, siempre que esas variables se mencionen antes de la variable de resultado del mapa o se use una variable que no se almacene en cach\u00e9. La vulnerabilidad podr\u00eda permitir la ejecuci\u00f3n remota de c\u00f3digo en <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-dronten\/\" title=\"servidor\" data-wpil-keyword-link=\"linked\">servidor<\/a> a trav\u00e9s del env\u00edo de una solicitud HTTP especialmente dise\u00f1ada. Se ha asignado un nivel cr\u00edtico de peligrosidad a este problema (9.2 de 10).\n<li class=\"l\"> CVE-2026-60005 \u2014 fuga de memoria no inicializada del proceso de trabajo al usar el m\u00f3dulo ngx_http_slice_module y especificar en la directiva slice expresiones regulares con sustituciones mediante variables no nombradas. La vulnerabilidad se clasifica con un nivel de severidad de 8.8 sobre 10.\n<li class=\"l\"> CVE-2026-56434 \u2014 acceso a memoria despu\u00e9s de su liberaci\u00f3n en el m\u00f3dulo ngx_http_ssi_module, que ocurre al procesar una respuesta especialmente formateada devuelta por un backend proxy. La vulnerabilidad puede llevar a la modificaci\u00f3n del contenido de la memoria del proceso de trabajo. Se asign\u00f3 un nivel de severidad de 8.3 sobre 10 a este problema.        <\/ul>\n<p>Cambios no relacionados con vulnerabilidades:  <\/p>\n<ul>\n<li class=\"l\">  En el m\u00f3dulo ngx_http_xslt_filter_module se ha deshabilitado la carga de variables en el documento XML, cuyos valores se cargan desde fuentes externas. Se ha a\u00f1adido la directiva \u00abxml_external_entities\u00bb para controlar la carga de componentes externos especificados en el bloque DTD del documento XML procesado.\n<li class=\"l\"> Se han a\u00f1adido las directivas \u00abproxy_socket_sndbuf\u00bb, \u00abproxy_socket_rcvbuf\u00bb, \u00abfastcgi_socket_sndbuf\u00bb, \u00abfastcgi_socket_rcvbuf\u00bb, \u00abgrpc_socket_sndbuf\u00bb, \u00abgrpc_socket_rcvbuf\u00bb, \u00abscgi_socket_sndbuf\u00bb, \u00abscgi_socket_rcvbuf\u00bb, \u00abuwsgi_socket_sndbuf\u00bb y \u00abuwsgi_socket_rcvbuf\u00bb para establecer el tama\u00f1o de los b\u00faferes de env\u00edo (SO_SNDBUF) y recepci\u00f3n (SO_RCVBUF).\n<li class=\"l\"> Para la arquitectura LoongArch64 se ha implementado la determinaci\u00f3n del tama\u00f1o del bloque (cache line) utilizado para la transmisi\u00f3n de datos entre la cach\u00e9 del CPU y la memoria.\n<li class=\"l\"> En los m\u00f3dulos ngx_http_proxy_v2_module y ngx_http_grpc_module se ha implementado un l\u00edmite en el tama\u00f1o de los encabezados y tr\u00e1ilers en las respuestas HTTP\/2 mediante las directivas proxy_buffer_size y grpc_buffer_size.      <\/ul>\n<p>Fuente: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65910\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.31.3, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043d\u043e\u0432\u044b\u0445 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.30.4, \u0432 \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u0432\u043d\u043e\u0441\u044f\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0441\u0435\u0440\u044c\u0451\u0437\u043d\u044b\u0445 \u043e\u0448\u0438\u0431\u043e\u043a \u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 3 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2026-42533 &#8212; \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0431\u0443\u0444\u0435\u0440\u0430, \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0449\u0435\u0435\u0441\u044f \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0432 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0435 &#171;map&#187; \u043f\u0440\u043e\u0432\u0435\u0440\u043e\u043a \u0447\u0435\u0440\u0435\u0437 \u0440\u0435\u0433\u0443\u043b\u044f\u0440\u043d\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0441 \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0430\u043c\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182651","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=\"\u0421\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 nginx 1.31.3, \u0432 \u0440\u0430\u043c\u043a\u0430\u0445 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442\u0441\u044f \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043d\u043e\u0432\u044b\u0445 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