{"id":145323,"date":"2025-10-16T17:11:54","date_gmt":"2025-10-16T15:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere"},"modified":"2025-10-16T17:11:54","modified_gmt":"2025-10-16T15:11:54","slug":"uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","title":{"rendered":"Vulnerabilidad en Samba que permite ejecutar c\u00f3digo de forma remota en el servidor","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Se han publicado actualizaciones correctivas para el paquete Samba 4.23.2, 4.22.5 y 4.21.9 que solucionan la vulnerabilidad (CVE-2025-10230) en la implementaci\u00f3n del servidor de resoluci\u00f3n de nombres WINS, lo que permite la ejecuci\u00f3n remota de c\u00f3digo en el servidor sin necesidad de autenticaci\u00f3n. El problema ha sido clasificado con el nivel m\u00e1s alto de peligro \u2014 10 de 10. <\/p>\n

La vulnerabilidad es causada por la falta de una adecuada verificaci\u00f3n de los valores que se transmiten antes de ejecutar la aplicaci\u00f3n especificada en el par\u00e1metro \u00abwins hook\u00bb. Esta aplicaci\u00f3n se ejecuta a trav\u00e9s del comando \u00absh -c\u00bb cada vez que se cambia un nombre a trav\u00e9s de WINS. Al utilizar WINS en el controlador dominio<\/a> Active Directory, los nombres de NetBIOS, que se pasan como argumentos en la l\u00ednea de comandos al iniciar la aplicaci\u00f3n hook, no se limpiaban de caracteres especiales, lo que permit\u00eda ejecutar comandos shell arbitrarios a trav\u00e9s de la especificaci\u00f3n de un nombre de NetBIOS especialmente formateado en la solicitud al servidor WINS. cmd = talloc_asprintf(tmp_mem, \"%s %s %s x %ld\", wins_hook_script, wins_hook_action_string(action), rec->name->name, rec->name->type, (long int) rec->expire_time); ... execl(\"\/bin\/sh\", \"sh\", \"-c\", cmd, NULL); <\/p>\n

Un cliente sin autenticaci\u00f3n puede enviar al servidor WINS un paquete de registro y solicitar cualquier nombre NetBIOS que no exceda de 15 caracteres. No se realiza la limpieza de caracteres como \u2018\u2019 y \u2018;\u2019 en el nombre. Por lo tanto, al ejecutar el manejador hook, la transmisi\u00f3n de un nombre como \u00abname;id>file\u00bb resultar\u00e1 en la ejecuci\u00f3n de la utilidad \u00abid\u00bb y redirigir\u00e1 la salida al archivo \u00abfile\u00bb. <\/p>\n

La vulnerabilidad se manifiesta en sistemas donde en smb.conf se establece el par\u00e1metro \u2018wins hook\u2019 al utilizar un controlador de dominio activo el servidor<\/a> WINS (desactivado por defecto y requiere habilitar la opci\u00f3n \u00abwins support = yes\u00bb). Al usar un servidor WINS en sistemas sin controlador de dominio, la vulnerabilidad no se presenta. Se puede verificar el estado de la nueva versi\u00f3n del paquete o la preparaci\u00f3n de correcciones en las siguientes p\u00e1ginas de distribuciones: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Gentoo, Arch, FreeBSD, OpenBSD y NetBSD. <\/p>\n

En las versiones publicadas de Samba tambi\u00e9n se ha corregido una vulnerabilidad menos cr\u00edtica (CVE-2025-9640) que puede llevar a la filtraci\u00f3n de memoria no inicializada. El problema se manifiesta en el m\u00f3dulo vfs_streams_xattr durante fallos en la asignaci\u00f3n de memoria, que pueden producirse a trav\u00e9s de operaciones de escritura que crean \u00e1reas vac\u00edas en el archivo. La vulnerabilidad puede ser explotada por un usuario autenticado.
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\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 4.23.2, 4.22.5 \u0438 4.21.9 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2025-10230) \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0438\u043c\u0451\u043d WINS, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 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\u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0435 «wins hook». \u0414\u0430\u043d\u043d\u043e\u0435 […]<\/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-145323","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47 Vulnerabilidad en Samba que permite la ejecuci\u00f3n remota de c\u00f3digo en el servidor | ProHoster","description":"Se han publicado versiones corregidas de los paquetes Samba 4.23.2, 4.22.5 y 4.21.9 que abordan una vulnerabilidad (CVE-2025-10230) en 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\u043d\u0430.","og:url":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2025-10-16T15:11:54+00:00","article:modified_time":"2025-10-16T15:11:54+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"145323","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-03-05 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