{"id":36245,"date":"2019-10-31T22:10:28","date_gmt":"2019-10-31T19:10:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novyj-bild-nemesida-waf-free-dlya-nginx\/"},"modified":"2019-10-31T22:10:28","modified_gmt":"2019-10-31T19:10:28","slug":"novyj-bild-nemesida-waf-free-dlya-nginx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/administrirovanie\/novyj-bild-nemesida-waf-free-dlya-nginx","title":{"rendered":"Nueva versi\u00f3n de Nemesida WAF Free para NGINX","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Nueva versi\u00f3n de Nemesida WAF Free para NGINX\" src=\"\/wp-content\/uploads\/2019\/07\/6d684f498688b4aab26911f30c0394d6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nEl a\u00f1o pasado lanzamos Nemesida WAF Free, un m\u00f3dulo din\u00e1mico para NGINX que bloquea ataques a aplicaciones web. A diferencia de la versi\u00f3n comercial que se basa en el aprendizaje autom\u00e1tico, la versi\u00f3n gratuita analiza las solicitudes \u00fanicamente mediante el m\u00e9todo de firmas.<\/p>\n<h3>Caracter\u00edsticas de la versi\u00f3n Nemesida WAF 4.0.129<\/h3>\n<p>\nHasta la versi\u00f3n actual, el m\u00f3dulo din\u00e1mico Nemesida WAF solo era compatible con Nginx Stable 1.12, 1.14 y 1.16. La nueva versi\u00f3n a\u00f1ade soporte para Nginx Mainline, comenzando con 1.17, y Nginx Plus, comenzando con 1.15.10 (R18).<\/p>\n<h3>\u00bfPor qu\u00e9 hacer otro WAF?<\/h3>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nNAXSI y mod_security son probablemente los m\u00f3dulos WAF gratuitos m\u00e1s populares, y mod_security es ampliamente promovido por Nginx, aunque originalmente solo se utilizaba en Apache2. Ambas soluciones son gratuitas, tienen c\u00f3digo abierto y cuentan con numerosos usuarios en todo el mundo. Para mod_security hay conjuntos de firmas disponibles tanto gratuitos como comerciales, por $500 al a\u00f1o, y para NAXSI hay un conjunto de firmas 'listo para usar', adem\u00e1s de que se pueden encontrar conjuntos adicionales de reglas como doxsi.<\/p>\n<p>Este a\u00f1o realizamos pruebas de funcionamiento de NAXSI y Nemesida WAF Free. Resumiendo los resultados:<\/p>\n<ul>\n<li>NAXSI no realiza doble URL-decode en las cookies<\/li>\n<li>NAXSI es muy dif\u00edcil de configurar; por defecto, las configuraciones de reglas bloquear\u00e1n la mayor\u00eda de los requerimientos al interactuar con la aplicaci\u00f3n web (autenticaci\u00f3n, edici\u00f3n de perfil o material, participaci\u00f3n en encuestas, etc.), y ser\u00e1 necesario generar listas de excepciones, lo que afecta negativamente la seguridad. Nemesida WAF Free, con la configuraci\u00f3n predeterminada, no registr\u00f3 ning\u00fan falso positivo durante su operaci\u00f3n en el sitio.<\/li>\n<li>el n\u00famero de ataques que NAXSI deja pasar es significativamente mayor, etc.<\/li>\n<\/ul>\n<p>\nA pesar de sus desventajas, NAXSI y mod_security tienen al menos dos ventajas: c\u00f3digo abierto y una gran cantidad de usuarios. Apoyamos la idea de revelar el c\u00f3digo fuente, pero no podemos hacerlo por el momento debido a posibles problemas con la 'pirater\u00eda' de la versi\u00f3n comercial; sin embargo, para compensar esta deficiencia, revelamos completamente el contenido del conjunto de firmas. Valoramos la privacidad y ofrecemos verificarlo por uno mismo usando un proxy.<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=\"3507\">servidores<\/a>.<\/p>\n<p>Caracter\u00edstica de Nemesida WAF Free:<\/p>\n<ul>\n<li>una base de firmas de alta calidad con un m\u00ednimo de Falsos Positivos y Falsos Negativos.<\/li>\n<li>instalaci\u00f3n y actualizaci\u00f3n desde el repositorio (es r\u00e1pido y conveniente);<\/li>\n<li>eventos simples y claros de incidentes, no una \"ensalada\" como en NAXSI;<\/li>\n<li>completamente gratuito, sin restricciones en el tr\u00e1fico, hosts virtuales, etc.<\/li>\n<\/ul>\n<p>\nPara concluir, proporcionar\u00e9 algunas consultas para evaluar el funcionamiento del WAF (se recomienda utilizar en cada una de las zonas: URL, ARGS, Headers &amp; Body):<\/p>\n<p><code>')) un\",\"ion se\",\"lect 1,2,3,4,5,6,7,8,9,0,11#\"]<br \/>\n')) union\/**\/select\/**\/1,\/**\/2,\/**\/3,\/**\/4,\/**\/5,\/**\/6,\/**\/7,\/**\/8,\/**\/9,\/**\/'some_text',\/**\/11#\"]<br \/>\nunion(select(1),2,3,4,5,6,7,8,9,0x70656e746573746974,11)#\"]<br \/>\n')) union+\n\/*!select*\/ (1),(2),(3),(4),(5),(6),(7),(8),(9),(0x70656e746573746974),(11)#\"]<br \/>\n')) \n\/*!uion*\\\/ \n\/*!seect*\\\/ (1),(2),(3),(4),(5),(6),(7),(8),(9.),(0x70656e746573746974),(11)#\"]<br \/>\n')) **union**select (1),(2),(3),(4),(5),(6),(7),(8),(9),(0x70656e746573746974),(11)#\"]<br \/>\n1807182982union<br \/>\nselect123456789%2some_text11<br \/>\ncat \/et?\/?pa?swd<br \/>\ncat \/et'c\/pa'ss'wd<br \/>\ncat \/et*\/\/pa**wd<br \/>\ne'c'ho 'swd test pentest' |awk '{print \"cat \/etc\/pas\"$1}' |bas'h<br \/>\ncat \/etc\/passwd<br \/>\ncat$u+\/etc$u\/passwd$u<br \/>\n&lt;svg\/onload=alert()\/\/<\/code><\/p>\n<p>Si las consultas no son bloqueadas, es probable que el WAF permita una ataque real. Antes de usar los ejemplos, aseg\u00farese de que el WAF no bloquee consultas leg\u00edtimas.<br \/>\n<br \/>Fuente: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/459976\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u043c\u044b \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 Nemesida WAF Free \u2014 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043c\u043e\u0434\u0443\u043b\u044c \u0434\u043b\u044f NGINX, \u0431\u043b\u043e\u043a\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u0432\u0435\u0431-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u043a\u043e\u043c\u043c\u0435\u0440\u0447\u0435\u0441\u043a\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043d\u0430 \u0440\u0430\u0431\u043e\u0442\u0435 \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f, \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u044b \u0442\u043e\u043b\u044c\u043a\u043e \u0441\u0438\u0433\u043d\u0430\u0442\u0443\u0440\u043d\u044b\u043c \u043c\u0435\u0442\u043e\u0434\u043e\u043c. \u041e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u0440\u0435\u043b\u0438\u0437\u0430 Nemesida WAF 4.0.129 \u0414\u043e \u0442\u0435\u043a\u0443\u0449\u0435\u0433\u043e \u0440\u0435\u043b\u0438\u0437\u0430 \u0434\u0438\u043d\u0430\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043c\u043e\u0434\u0443\u043b\u044c Nemesida WAF \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u043b \u0442\u043e\u043b\u044c\u043a\u043e Nginx Stable 1.12, 1.14 \u0438 1.16. \u0412 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":27112,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-36245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443 \u043c\u044b \u0432\u044b\u043f\u0443\u0441\u0442\u0438\u043b\u0438 Nemesida WAF Free \u2014.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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