{"id":99307,"date":"2021-03-02T16:23:36","date_gmt":"2021-03-02T14:23:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opasnye-uyazvimosti-v-sisteme-upravleniya-konfiguracziej-saltstack"},"modified":"2021-03-02T16:23:36","modified_gmt":"2021-03-02T14:23:36","slug":"opasnye-uyazvimosti-v-sisteme-upravleniya-konfiguracziej-saltstack","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/opasnye-uyazvimosti-v-sisteme-upravleniya-konfiguracziej-saltstack","title":{"rendered":"Vulnerabilidades cr\u00edticas en el sistema de gesti\u00f3n de configuraciones SaltStack","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En las nuevas versiones del sistema de gesti\u00f3n centralizada de configuraciones SaltStack 3002.5, 3001.6 y 3000.8 se ha corregido una vulnerabilidad (CVE-2020-28243) que permite a un usuario local no privilegiado del host elevar sus privilegios en el sistema. El problema fue causado por un error en el manejador salt-minion, utilizado para recibir comandos del servidor central. La vulnerabilidad fue detectada en noviembre, pero solo se solucion\u00f3 ahora.    <\/p>\n<p>Al realizar la operaci\u00f3n &#171;restartcheck&#187; existe la posibilidad de ejecutar comandos arbitrarios a trav\u00e9s de manipulaciones con el nombre del proceso. En particular, la verificaci\u00f3n de la existencia del paquete se hac\u00eda mediante el lanzamiento del gestor de paquetes con el argumento obtenido a partir del nombre del proceso. El gestor de paquetes se inicia mediante la llamada a la funci\u00f3n popen en modo de ejecuci\u00f3n de shell, pero sin escapar los caracteres especiales. Al modificar el nombre del proceso y utilizar s\u00edmbolos como &#171;;&#187; y &#171;|&#187;, se puede organizar la ejecuci\u00f3n de c\u00f3digo propio.    <\/p>\n<p>Adem\u00e1s del problema mencionado, en SaltStack 3002.5 se han corregido otras 9 vulnerabilidades:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2021-25281 &#8212; debido a la falta de una adecuada verificaci\u00f3n de credenciales, un atacante remoto puede, a trav\u00e9s de una llamada a SaltAPI, ejecutar cualquier m\u00f3dulo wheel en el lado del servidor controlador master y comprometer toda la infraestructura.\n<li class=\"l\"> CVE-2021-3197 &#8212; problema en el m\u00f3dulo SSH hacia el minion, que permite ejecutar comandos shell arbitrarios mediante la sustituci\u00f3n de un argumento con la configuraci\u00f3n &#171;ProxyCommand&#187; o la transferencia de ssh_options a trav\u00e9s de la API.\n<li class=\"l\"> CVE-2021-25282 &#8212; el acceso no autorizado a wheel_async permite, a trav\u00e9s de una llamada a SaltAPI, sobrescribir un archivo m\u00e1s all\u00e1 del directorio base y ejecutar c\u00f3digo arbitrario en el sistema.\n<li class=\"l\"> CVE-2021-25283 &#8212; el salto fuera del directorio base en el manejador wheel.pillar_roots.write en SaltAPI permite a\u00f1adir una plantilla arbitraria al renderizador jinja.\n<li class=\"l\"> CVE-2021-25284 &#8212; las contrase\u00f1as establecidas a trav\u00e9s de webutils se registraron en texto claro en el log \/var\/log\/salt\/minion.\n<li class=\"l\"> CVE-2021-3148 &#8212; posibilidad de sustituci\u00f3n de comandos a trav\u00e9s de SaltAPI mediante la invocaci\u00f3n de salt.utils.thin.gen_thin().\n<li class=\"l\"> CVE-2020-35662 &#8212; falta de verificaci\u00f3n. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/ssl-sertifikat\/\"   title=\"SSL\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2289\">SSL<\/a>- del certificado en la configuraci\u00f3n por defecto.\n<li class=\"l\"> CVE-2021-3144 &#8212; posibilidad de uso de tokens de autenticaci\u00f3n eauth despu\u00e9s de que hayan expirado.\n<li class=\"l\"> CVE-2020-28972 &#8212; el c\u00f3digo no verificaba el certificado SSL\/TLS.  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/dts-los-angeles\/\"   title=\"servidores\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3696\">servidores<\/a>, lo que permit\u00eda realizar ataques MITM.    <\/ul>\n<p>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54685\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0435\u0439 SaltStack 3002.5, 3001.6 \u0438 3000.8 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-28243) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0445\u043e\u0441\u0442\u0430 \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0432 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0435 salt-minion, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u043f\u0440\u0438\u0451\u043c\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 \u0441 \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0431\u044b\u043b\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0432 \u043d\u043e\u044f\u0431\u0440\u0435, \u043d\u043e \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0441\u0435\u0439\u0447\u0430\u0441. \u041f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 &#171;restartcheck&#187; \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0438\u0442\u044c \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 [&hellip;]<\/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-99307","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=\"\u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0446\u0435\u043d\u0442\u0440\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0435\u0439 SaltStack 3002.5, 3001.6 \u0438 3000.8 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configuraci\u00f3n SaltStack 3002.5, 3001.6 y 3000.8 se ha solucionado una vulnerabilidad (CVE-2020-28243) que permite a un usuario local no privilegiado del host escalar sus privilegios.","canonical_url":"https:\/\/prohoster.info\/es\/blog\/news\/opasnye-uyazvimosti-v-sisteme-upravleniya-konfiguracziej-saltstack","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"es_ES","og:site_name":"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","og:type":"article","og:title":"\ud83e\udd47\u041e\u043f\u0430\u0441\u043d\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 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