{"id":101027,"date":"2021-08-17T10:22:36","date_gmt":"2021-08-17T08:22:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimos-v-glibc-pozvolyayushhaya-vyzvat-krah-chuzhogo-proczessa"},"modified":"2021-08-17T10:22:36","modified_gmt":"2021-08-17T08:22:36","slug":"uyazvimos-v-glibc-pozvolyayushhaya-vyzvat-krah-chuzhogo-proczessa","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uyazvimos-v-glibc-pozvolyayushhaya-vyzvat-krah-chuzhogo-proczessa","title":{"rendered":"Vulnerabilit\u00e0 in Glibc che consente di causare il crash di un processo di terzi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stata scoperta una vulnerabilit\u00e0 in Glibc (CVE-2021-38604) che consente di causare il crash dei processi nel sistema inviando un messaggio appositamente formattato tramite l'API delle code di messaggi POSIX. Nei pacchetti distribuiti, il problema non si \u00e8 manifestato, poich\u00e9 \u00e8 presente solo nella versione 2.34, pubblicata due settimane fa.      <\/p>\n<p>Il problema \u00e8 causato da un'elaborazione errata dei dati NOTIFY_REMOVED nel codice mq_notify.c, che porta alla dereferenziazione di un puntatore NULL e al crash del processo. \u00c8 interessante notare che il problema \u00e8 il risultato di una mancanza di attenzione nella correzione di un'altra vulnerabilit\u00e0 (CVE-2021-33574), risolta nella versione Glibc 2.34. Tuttavia, mentre la prima vulnerabilit\u00e0 era piuttosto difficile da sfruttare e richiedeva una combinazione di circostanze specifiche, eseguire un attacco utilizzando il secondo problema \u00e8 significativamente pi\u00f9 semplice.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55646\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 Glibc \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-38604), \u0434\u0430\u044e\u0449\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u0440\u0430\u0445 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0447\u0435\u0440\u0435\u0437 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f \u0447\u0435\u0440\u0435\u0437 POSIX message queues API. \u0412 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043d\u0435 \u0443\u0441\u043f\u0435\u043b\u0430 \u043f\u0440\u043e\u044f\u0432\u0438\u0442\u044c\u0441\u044f, \u0442\u0430\u043a \u043a\u0430\u043a \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 2.34, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u0434\u0432\u0435 \u043d\u0435\u0434\u0435\u043b\u0438 \u043d\u0430\u0437\u0430\u0434. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 NOTIFY_REMOVED \u0432 \u043a\u043e\u0434\u0435 mq_notify.c, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u043a \u0440\u0430\u0437\u044b\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044f NULL \u0438 \u043a\u0440\u0430\u0445\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-101027","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta 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