{"id":181731,"date":"2026-05-25T20:48:17","date_gmt":"2026-05-25T18:48:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/novaya-uyazvimost-v-rewrite-module-nginx"},"modified":"2026-05-25T20:48:17","modified_gmt":"2026-05-25T18:48:17","slug":"novaya-uyazvimost-v-rewrite-module-nginx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/novaya-uyazvimost-v-rewrite-module-nginx","title":{"rendered":"Nouvelle vuln\u00e9rabilit\u00e9 dans le module de r\u00e9\u00e9criture nginx","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <\/p>\n<p>Peu de temps apr\u00e8s la d\u00e9couverte <a rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/18295901\">d'un RCE potentiel \u00e2g\u00e9 de 18 ans, un autre a \u00e9t\u00e9 d\u00e9couvert,<\/a> CVE-2026-9256 <a rel=\"nofollow\" href=\"https:\/\/www.cve.org\/CVERecord?id=CVE-2026-9256\">, cette fois ayant dur\u00e9 encore plus longtemps - 21 ans, \u00e0 partir de la version 0.1.17, publi\u00e9e au d\u00e9but de 2005.<\/a>, cette fois-ci ayant dur\u00e9 encore plus longtemps&nbsp;&mdash; 21 an, depuis la version 0.1.17, sortie au d\u00e9but de 2005.<\/noindex><br \/>\ndans le premier argument, des param\u00e8tres de l'expression r\u00e9guli\u00e8re se chevauchent,\n<\/p>\n<ul>\n<li> dans le second, deux ou plusieurs d'entre eux sont utilis\u00e9s, mais aucune variable n'est utilis\u00e9e,\n<\/li>\n<li> et soit un type \u00ab redirect \u00bb est sp\u00e9cifi\u00e9, soit les param\u00e8tres dans le second argument se trouvent apr\u00e8s le point d'interrogation.\n<\/li>\n<li> dans ce cas, soit le type &#171;redirect&#187; est sp\u00e9cifi\u00e9, soit les param\u00e8tres dans le deuxi\u00e8me argument se trouvent apr\u00e8s le point d'interrogation.\n<\/li>\n<\/ul>\n<p>\nExemples :<br \/>\nrewrite ^\\\/((.*))$ http:\\\/\\\/127.0.0.1:8080\\\/?$1$2;<br \/>\nTous deux subiront un d\u00e9passement de tampon lors du traitement de la requ\u00eate \u00ab \\\/++++++++++++++++++++++++++++++ \u00bb.<\/p>\n<p>Tous deux recevront un d\u00e9passement de m\u00e9moire tampon lors du traitement de la requ\u00eate &#171;\\\/++++++++++++++++++++++++++++++&#187;.<\/p>\n<p>Comme dans la vuln\u00e9rabilit\u00e9 pr\u00e9c\u00e9dente, dans ce cas, la longueur estim\u00e9e du tampon peut ne pas correspondre \u00e0 la quantit\u00e9 r\u00e9elle de donn\u00e9es qui y sont \u00e9crites&nbsp;&mdash; lors du calcul de la longueur, on n'a pas toujours pris en compte l'\u00e9chappement possible.<\/p>\n<p>Ce qui pr\u00e9c\u00e8de peut entra\u00eener un crash du processus de nginx, et en l'absence d'ASLR&nbsp;&mdash; un RCE. Comme circonstance att\u00e9nuante, on peut noter une probabilit\u00e9 encore plus faible de rencontrer des constructions vuln\u00e9rables dans la configuration que la derni\u00e8re fois.<\/p>\n<p>commit de correction<a rel=\"nofollow\" href=\"https:\/\/github.com\/nginx\/nginx\/commit\/ca4f92a27464ae6c2082245e4f67048c633aa032\">Peu de temps apr\u00e8s la d\u00e9couverte d'un RCE potentiel \u00e2g\u00e9 de 18 ans, un autre a \u00e9t\u00e9 d\u00e9couvert,<\/a>).\n<\/p>\n<p>Source : <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/security\/18300022\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u0441\u043a\u043e\u0440\u0435 \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f 18-\u043b\u0435\u0442\u043d\u0435\u0433\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0433\u043e RCE \u0431\u044b\u043b\u043e \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043e \u0435\u0449\u0451 \u043e\u0434\u043d\u043e, CVE-2026-9256, \u043d\u0430 \u044d\u0442\u043e\u0442 \u0440\u0430\u0437 \u043f\u0440\u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u0432\u0448\u0435\u0435 \u0435\u0449\u0451 \u0434\u043e\u043b\u044c\u0448\u0435&nbsp;&mdash; 21 \u0433\u043e\u0434, \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0438 0.1.17, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0439 \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 2005 \u0433\u043e\u0434\u0430. \u0414\u043b\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u0432 \u043a\u043e\u043d\u0444\u0438\u0433\u0435 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0434\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u044b rewrite, \u0443 \u043a\u043e\u0442\u043e\u0440\u043e\u0439: \u0432 \u043f\u0435\u0440\u0432\u043e\u043c \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u0435 \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u043a\u0440\u044b\u0432\u0430\u044e\u0449\u0438\u0435\u0441\u044f \u0432\u044b\u0434\u0435\u043b\u044f\u0435\u043c\u044b\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0440\u0435\u0433\u0443\u043b\u044f\u0440\u043d\u043e\u0433\u043e \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u0432\u043e \u0432\u0442\u043e\u0440\u043e\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u0432\u0430 \u0438\u043b\u0438 \u0431\u043e\u043b\u044c\u0448\u0435 [&hellip;]<\/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-181731","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\u0441\u043a\u043e\u0440\u0435 \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u0438\u044f 18-\u043b\u0435\u0442\u043d\u0435\u0433\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0433\u043e RCE \u0431\u044b\u043b\u043e \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0435\u043d\u043e \u0435\u0449\u0451 \u043e\u0434\u043d\u043e,\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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