{"id":153472,"date":"2026-01-09T11:12:29","date_gmt":"2026-01-09T09:12:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vosstanovlen-kod-unixv4-pervoj-os-s-yadrom-na-yazyke-c-uyazvimost-v-unixv4"},"modified":"2026-01-09T11:12:29","modified_gmt":"2026-01-09T09:12:29","slug":"vosstanovlen-kod-unixv4-pervoj-os-s-yadrom-na-yazyke-c-uyazvimost-v-unixv4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/vosstanovlen-kod-unixv4-pervoj-os-s-yadrom-na-yazyke-c-uyazvimost-v-unixv4","title":{"rendered":"Se ha restaurado el c\u00f3digo de UNIXv4, el primer sistema operativo con n\u00facleo en lenguaje C. Vulnerabilidad en UNIXv4.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A finales del a\u00f1o pasado, durante una limpieza en el centro de computaci\u00f3n de la Universidad de Utah, se encontr\u00f3 una cinta magn\u00e9tica archivada con el c\u00f3digo del sistema operativo UNIXv4, que fue desarrollado en 1973 para la computadora PDP-11\/45 y se cre\u00eda perdida. UNIXv4 continu\u00f3 el desarrollo del sistema operativo UNIXv3, lanzado un a\u00f1o antes, en el que se utiliz\u00f3 por primera vez el lenguaje C y tuber\u00edas sin nombre. La caracter\u00edstica distintiva de UNIXv4 fue la reescritura del n\u00facleo de ensamblador a lenguaje C. El c\u00f3digo n\u00facleo de UNIXv4 fue escrito por Ken Thompson, y los controladores fueron desarrollados por Dennis Ritchie.      <\/p>\n<p>A finales de diciembre de 2025, el personal del museo de historia de la computaci\u00f3n logr\u00f3 encontrar el equipo necesario y extraer el archivo almacenado en la cinta. Se utiliz\u00f3 la herramienta readtape para digitalizar la se\u00f1al anal\u00f3gica grabada en la cinta, y se emplearon desarrollos realizados durante la restauraci\u00f3n del archivo con la implementaci\u00f3n del editor Emacs de James Gosling para decodificar el formato del archivo.         <\/p>\n<p>Adem\u00e1s del c\u00f3digo de UNIXv4, la cinta tambi\u00e9n conten\u00eda los textos fuente de uno de los primeros compiladores para el lenguaje C y un int\u00e9rprete del lenguaje SNOBOL. Posteriormente, el c\u00f3digo de UNIXv4 fue ordenado y publicado en GitHub en una forma apta para compilar y ejecutar en un simulador PDP-11. El c\u00f3digo de UNIXv4 incluye 61 mil l\u00edneas, de las cuales 27 mil est\u00e1n en lenguaje C, 33 mil en ensamblador para PDP-11 y alrededor de mil son archivos de encabezado.     <center><img decoding=\"async\" alt=\"Se ha restaurado el c\u00f3digo de UNIXv4, el primer sistema operativo con n\u00facleo en lenguaje C. Vulnerabilidad en UNIXv4.\" src=\"\/wp-content\/uploads\/2026\/01\/f20da03c94b8a3a772fc39a048875f05.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>Uno de los investigadores de seguridad not\u00f3 la utilidad \u00absu\u00bb, que ven\u00eda incluida en UNIXv4. Esta utilidad conten\u00eda menos de 50 l\u00edneas de c\u00f3digo, se instalaba con la bandera setuid-root y permit\u00eda ejecutar \/bin\/sh con privilegios de root al introducir la contrase\u00f1a correcta. El c\u00f3digo ten\u00eda una vulnerabilidad que provocaba un desbordamiento de b\u00fafer debido a la copia de la contrase\u00f1a del usuario en un arreglo fijo de 100 caracteres sin verificar el tama\u00f1o de los datos introducidos.      <\/p>\n<p>El problema identificado fue comentado por Douglas McIlroy, de 93 a\u00f1os, quien formaba parte del equipo de los desarrolladores originales de Unix en Bell Labs. \u00c9l propuso la concepto de tuber\u00edas sin nombre y cre\u00f3 utilidades como echo, spell, diff, sort, join y tr. Seg\u00fan Douglas, antes de la aparici\u00f3n del gusano Morris en 1988, pocos prestaban atenci\u00f3n a los desbordamientos de b\u00fafer. La adici\u00f3n de chequeos de tama\u00f1o para los datos introducidos manualmente se consideraba como una adici\u00f3n de c\u00f3digo innecesario, y el cierre inesperado debido al desbordamiento se percib\u00eda como una forma torpe de reaccionar a entradas incorrectas. Con el tiempo, se empezaron a corregir los desbordamientos que ocurr\u00edan al procesar cadenas generadas autom\u00e1ticamente, pero para la entrada manual, la l\u00f3gica era a nivel de \u00ab\u00bfqui\u00e9n necesitar\u00eda introducir cadenas demasiado largas manualmente?\u00bb.<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64498\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043a\u043e\u043d\u0446\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0433\u043e\u0434\u0430 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0443\u0431\u043e\u0440\u043a\u0438 \u0432 \u0432\u044b\u0447\u0438\u0441\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u043c \u0446\u0435\u043d\u0442\u0440\u0435 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u042e\u0442\u044b \u0431\u044b\u043b\u0430 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0430 \u0430\u0440\u0445\u0438\u0432\u043d\u0430\u044f \u043c\u0430\u0433\u043d\u0438\u0442\u043d\u0430\u044f \u043b\u0435\u043d\u0442\u0430 \u0441 \u043a\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b UNIXv4, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0431\u044b\u043b\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u0430 \u0432 1973 \u0433\u043e\u0434\u0443 \u0434\u043b\u044f \u042d\u0412\u041c PDP-11\/45 \u0438 \u0441\u0447\u0438\u0442\u0430\u043b\u0430\u0441\u044c \u0443\u0442\u0435\u0440\u044f\u043d\u043d\u043e\u0439. UNIXv4 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u043b \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0439 \u0437\u0430 \u0433\u043e\u0434 \u0434\u043e \u044d\u0442\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b UNIXv3, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0432\u043f\u0435\u0440\u0432\u044b\u0435 \u0431\u044b\u043b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d \u044f\u0437\u044b\u043a \u0421\u0438 \u0438 \u043d\u0435\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043a\u0430\u043d\u0430\u043b\u044b. [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":153473,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-153472","post","type-post","status-publish","format-standard","has-post-thumbnail","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 \u043a\u043e\u043d\u0446\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0433\u043e\u0434\u0430 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0443\u0431\u043e\u0440\u043a\u0438 \u0432 \u0432\u044b\u0447\u0438\u0441\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u043c \u0446\u0435\u043d\u0442\u0440\u0435 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u042e\u0442\u044b \u0431\u044b\u043b\u0430 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0430 \u0430\u0440\u0445\u0438\u0432\u043d\u0430\u044f \u043c\u0430\u0433\u043d\u0438\u0442\u043d\u0430\u044f \u043b\u0435\u043d\u0442\u0430 \u0441 \u043a\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b UNIXv4, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0431\u044b\u043b\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u0430 \u0432 1973 \u0433\u043e\u0434\u0443 \u0434\u043b\u044f \u042d\u0412\u041c PDP-11\/45 \u0438.\" \/>\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\/vosstanovlen-kod-unixv4-pervoj-os-s-yadrom-na-yazyke-c-uyazvimost-v-unixv4\" \/>\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\u0412\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d \u043a\u043e\u0434 UNIXv4, \u043f\u0435\u0440\u0432\u043e\u0439 \u041e\u0421 \u0441 \u044f\u0434\u0440\u043e\u043c \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 C. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 UNIXv4 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u043a\u043e\u043d\u0446\u0435 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0433\u043e\u0434\u0430 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0443\u0431\u043e\u0440\u043a\u0438 \u0432 \u0432\u044b\u0447\u0438\u0441\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u043c \u0446\u0435\u043d\u0442\u0440\u0435 \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u042e\u0442\u044b \u0431\u044b\u043b\u0430 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0430 \u0430\u0440\u0445\u0438\u0432\u043d\u0430\u044f \u043c\u0430\u0433\u043d\u0438\u0442\u043d\u0430\u044f \u043b\u0435\u043d\u0442\u0430 \u0441 \u043a\u043e\u0434\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b UNIXv4, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0431\u044b\u043b\u0430 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u0430 \u0432 1973 \u0433\u043e\u0434\u0443 \u0434\u043b\u044f \u042d\u0412\u041c PDP-11\/45 \u0438.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/es\/blog\/news\/vosstanovlen-kod-unixv4-pervoj-os-s-yadrom-na-yazyke-c-uyazvimost-v-unixv4\" \/>\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=\"2026-01-09T09:12:29+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2026-01-09T09:12:29+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\udd47Se ha restaurado el c\u00f3digo UNIXv4, el primer sistema operativo con un n\u00facleo en lenguaje C. 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