{"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\/fr\/blog\/administrirovanie\/novyj-bild-nemesida-waf-free-dlya-nginx","title":{"rendered":"Nouvelle version de Nemesida WAF Free pour NGINX","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Nouvelle version de Nemesida WAF Free pour NGINX\" src=\"\/wp-content\/uploads\/2019\/07\/6d684f498688b4aab26911f30c0394d6.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nL'ann\u00e9e derni\u00e8re, nous avons lanc\u00e9 Nemesida WAF Free - un module dynamique pour NGINX qui bloque les attaques contre les applications web. Contrairement \u00e0 la version commerciale, qui est bas\u00e9e sur l'apprentissage automatique, la version gratuite analyse les requ\u00eates uniquement par m\u00e9thode de signature.<\/p>\n<h3>Caract\u00e9ristiques de la version Nemesida WAF 4.0.129<\/h3>\n<p>\nAvant cette version, le module dynamique Nemesida WAF ne supportait que Nginx Stable 1.12, 1.14 et 1.16. Dans la nouvelle version, la prise en charge de Nginx Mainline, \u00e0 partir de 1.17, et de Nginx Plus \u00e0 partir de 1.15.10 (R18), a \u00e9t\u00e9 ajout\u00e9e.<\/p>\n<h3>Pourquoi cr\u00e9er un autre WAF ?<\/h3>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nNAXSI et mod_security sont probablement les modules WAF gratuits les plus populaires, mod_security \u00e9tant activement promu par les forces de Nginx, bien qu'il ait \u00e9t\u00e9 initialement utilis\u00e9 uniquement dans Apache2. Les deux solutions sont gratuites, open source et comptent de nombreux utilisateurs dans le monde entier. Pour mod_security, un ensemble de signatures gratuit et commercial est disponible pour 500 $ par an, tandis que NAXSI dispose d'un ensemble de signatures gratuit \u00ab pr\u00eat \u00e0 l'emploi \u00bb, ainsi que d'ensembles de r\u00e8gles suppl\u00e9mentaires comme doxsi.<\/p>\n<p>Cette ann\u00e9e, nous avons test\u00e9 le fonctionnement de NAXSI et de Nemesida WAF Free. En r\u00e9sum\u00e9 des r\u00e9sultats :<\/p>\n<ul>\n<li>NAXSI ne r\u00e9alise pas de double URL-decode dans les cookies<\/li>\n<li>NAXSI est tr\u00e8s long \u00e0 configurer - par d\u00e9faut, les r\u00e8gles standard bloqueront la plupart des acc\u00e8s lors de l'interaction avec l'application web (authentification, modification de profil ou de contenu, participation \u00e0 des sondages, etc.), et il est n\u00e9cessaire de g\u00e9n\u00e9rer des listes d'exceptions, ce qui nuit \u00e0 la s\u00e9curit\u00e9. Nemesida WAF Free, avec des param\u00e8tres par d\u00e9faut, n'a pas d\u00e9clench\u00e9 de faux positifs lors de l'utilisation du site.<\/li>\n<li>Le nombre de faux positifs bloqu\u00e9s par NAXSI est de plusieurs ordres de grandeur sup\u00e9rieur, etc.<\/li>\n<\/ul>\n<p>\nMalgr\u00e9 leurs inconv\u00e9nients, NAXSI et mod_security ont au moins deux avantages : un code source ouvert et un grand nombre d'utilisateurs. Nous soutenons l'id\u00e9e d'ouvrir le code source, mais nous ne pouvons pas le faire pour le moment en raison de probl\u00e8mes potentiels de \u00ab piraterie \u00bb de la version commerciale. Cependant, pour compenser ce manque, nous r\u00e9v\u00e9lons enti\u00e8rement le contenu de l'ensemble de signatures. Nous appr\u00e9cions la confidentialit\u00e9 et proposons de v\u00e9rifier cela par vous-m\u00eame via un proxy.<a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/fr\/server\/dts-los-angeles\/\"   title=\"de serveurs\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3507\">de serveurs<\/a>.<\/p>\n<p>Caract\u00e9ristiques de Nemesida WAF Free :<\/p>\n<ul>\n<li>Une base de signatures de qualit\u00e9 avec un minimum de faux positifs et de faux n\u00e9gatifs.<\/li>\n<li>Installation et mise \u00e0 jour depuis le d\u00e9p\u00f4t (rapide et pratique) ;<\/li>\n<li>\u00c9v\u00e9nements d'incidents simples et clairs, et non une \u00ab bouillie \u00bb comme avec NAXSI ;<\/li>\n<li>enti\u00e8rement gratuit, sans restrictions sur le nombre de trafic, d'h\u00f4tes virtuels, etc.<\/li>\n<\/ul>\n<p>\nPour conclure, je vais fournir quelques requ\u00eates pour \u00e9valuer le fonctionnement du WAF (il est recommand\u00e9 de les utiliser dans chacune des zones : 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')) \\u006eeion*\/ \\u0065select*\/ (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\/pas's'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 les requ\u00eates ne sont pas bloqu\u00e9es, il est probable que le WAF passe \u00e9galement une v\u00e9ritable attaque. Avant d'utiliser les exemples, assurez-vous que le WAF ne bloque pas les requ\u00eates l\u00e9gitimes.<br \/>\n<br \/>Source : <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 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