{"id":100877,"date":"2021-07-31T10:22:46","date_gmt":"2021-07-31T08:22:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-http2-module-iz-sostava-node-js"},"modified":"2021-07-31T10:22:46","modified_gmt":"2021-07-31T08:22:46","slug":"uyazvimost-v-http2-module-iz-sostava-node-js","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/uyazvimost-v-http2-module-iz-sostava-node-js","title":{"rendered":"\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 http2-\u043c\u043e\u0434\u0443\u043b\u0435 \u0438\u0437 \u0441\u043e\u0441\u0442\u0430\u0432\u0430 Node.js","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Les d\u00e9veloppeurs de la plateforme serveur JavaScript Node.js ont publi\u00e9 des mises \u00e0 jour de correction 12.22.4, 14.17.4 et 16.6.0, qui att\u00e9nuent partiellement la vuln\u00e9rabilit\u00e9 (CVE-2021-22930) dans le module http2 (client HTTP\/2.0), permettant de provoquer un crash du processus ou potentiellement d'ex\u00e9cuter du code malveillant dans le syst\u00e8me en acc\u00e9dant \u00e0 un h\u00f4te contr\u00f4l\u00e9 par un attaquant. <\/p>\n

Le probl\u00e8me est caus\u00e9 par l'acc\u00e8s \u00e0 une zone m\u00e9moire d\u00e9j\u00e0 lib\u00e9r\u00e9e lors de la fermeture de la connexion apr\u00e8s la r\u00e9ception de trames RST_STREAM (r\u00e9initialiser le flux) pour des flux ex\u00e9cutant des op\u00e9rations de lecture intensives, bloquant l'\u00e9criture. En cas de r\u00e9ception d'une trame RST_STREAM sans indication de code d'erreur, le module http2 appelle \u00e9galement une proc\u00e9dure de nettoyage des donn\u00e9es d\u00e9j\u00e0 re\u00e7ues, ce qui entra\u00eene un rappel du gestionnaire de fermeture pour un flux d\u00e9j\u00e0 ferm\u00e9, entra\u00eenant une double lib\u00e9ration des structures de donn\u00e9es. <\/p>\n

La discussion sur la correction indique que le probl\u00e8me n'a pas \u00e9t\u00e9 enti\u00e8rement r\u00e9solu et qu'il continue de se manifester dans les mises \u00e0 jour publi\u00e9es, m\u00eame dans des conditions l\u00e9g\u00e8rement modifi\u00e9es. L'analyse a montr\u00e9 que la correction ne couvre qu'un seul des cas particuliers \u2014 celui o\u00f9 le flux est en mode lecture, mais n'a pas pris en compte d'autres \u00e9tats du flux (lecture et pause, pause et certains types d'\u00e9criture).
\n
Source : opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u043d\u043e\u0439 JavaScript-\u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b Node.js \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 12.22.4, 14.17.4 \u0438 16.6.0, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-22930) \u0432 \u043c\u043e\u0434\u0443\u043b\u0435 http2 (\u043a\u043b\u0438\u0435\u043d\u0442 HTTP\/2.0), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 \u0438\u043b\u0438 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