{"id":116725,"date":"2024-06-23T03:39:41","date_gmt":"2024-06-23T01:39:41","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-python-pakete-js2py-zagruzhaemogo-bolee-milliona-raz-v-mesyacz"},"modified":"2024-06-23T03:39:41","modified_gmt":"2024-06-23T01:39:41","slug":"uyazvimost-v-python-pakete-js2py-zagruzhaemogo-bolee-milliona-raz-v-mesyacz","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/uyazvimost-v-python-pakete-js2py-zagruzhaemogo-bolee-milliona-raz-v-mesyacz","title":{"rendered":"Una vulnerabilidad en el paquete de Python Js2Py, que se descarga m\u00e1s de un mill\u00f3n de veces al mes","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se ha descubierto una vulnerabilidad (CVE-2024-28397) en el paquete Js2Py de Python, que fue descargado 1.2 millones de veces el mes pasado, permitiendo eludir el aislamiento de sandbox y ejecutar c\u00f3digo en el sistema al procesar datos dise\u00f1ados espec\u00edficamente en JavaScript. La vulnerabilidad puede ser utilizada para atacar programas que emplean Js2Py para ejecutar c\u00f3digo JavaScript. Actualmente, la soluci\u00f3n solo est\u00e1 disponible en forma de parche. Se ha preparado un prototipo de exploit para verificar la posibilidad de un ataque.<\/p>\n<p>El paquete Js2Py implementa un int\u00e9rprete y traductor de JavaScript, que permite ejecutar c\u00f3digo JavaScript de forma aislada <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/vps\/abuzoustojchivye-vps\/\"   title=\"una m\u00e1quina virtual\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4341\">una m\u00e1quina virtual<\/a> o traducir JavaScript a una representaci\u00f3n en lenguaje Python. El proyecto est\u00e1 completamente escrito en Python y no utiliza motores de JavaScript de terceros. En la pr\u00e1ctica, la biblioteca se utiliza en diversos indexadores web, sistemas de descarga y analizadores de sitios que soportan el procesamiento de contenido generado por c\u00f3digo JavaScript. <\/p>\n<p>Entre las aplicaciones afectadas por la vulnerabilidad se encuentran Lightnovel Crawler (una utilidad para descargar libros de servicios en l\u00ednea y guardarlos en diversos formatos para lectura offline), cloudscraper (herramienta que elude autom\u00e1ticamente las p\u00e1ginas de protecci\u00f3n contra bots utilizadas en CDN Cloudflare) y pyLoad (un gestor de descargas que soporta el procesamiento de p\u00e1ginas generadas en JavaScript). Al procesar contenido JavaScript dise\u00f1ado espec\u00edficamente, un atacante puede lograr la ejecuci\u00f3n de c\u00f3digo arbitrario a nivel de sistema en estas aplicaciones.<\/p>\n<p>La vulnerabilidad est\u00e1 presente en la implementaci\u00f3n de una variable global dentro de js2py, que permite acceder a un objeto de Python desde el c\u00f3digo JavaScript ejecutado en un entorno aislado, a pesar de la llamada al m\u00e9todo js2py.disable_pyimport() para desactivar la importaci\u00f3n de objetos de Python. Para ejecutar c\u00f3digo arbitrario en el sistema, un atacante puede aprovechar la vulnerabilidad para obtener acceso al objeto Popen del m\u00f3dulo Python subprocess. Es notable que la modificaci\u00f3n que elimina la vulnerabilidad fue enviada al proyecto Js2Py el primero de marzo, pero no ha sido aceptada despu\u00e9s de tres meses y medio.<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61421\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 Python-\u043f\u0430\u043a\u0435\u0442\u0435 Js2Py, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u044b\u043b \u0437\u0430\u0433\u0440\u0443\u0436\u0435\u043d \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u043c\u0435\u0441\u044f\u0446\u0435 1.2 \u043c\u043b\u043d \u0440\u0430\u0437, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-28397), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043e\u0431\u043e\u0439\u0442\u0438 sandbox-\u0438\u0437\u043e\u043b\u044f\u0446\u0438\u044e \u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u043d\u0430 JavaScript. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0449\u0438\u0435 Js2Py \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f JavaScript-\u043a\u043e\u0434\u0430. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u043e\u043a\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0432\u0438\u0434\u0435 \u043f\u0430\u0442\u0447\u0430. \u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0430\u0442\u0430\u043a\u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116725","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 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