{"id":104724,"date":"2022-07-28T15:36:38","date_gmt":"2022-07-28T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu"},"modified":"2022-07-28T15:36:38","modified_gmt":"2022-07-28T13:36:38","slug":"uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","title":{"rendered":"Vulnerabilit\u00e0 in Samba che consente a qualsiasi utente di modificare la password.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Sono stati rilasciati aggiornamenti correttivi per i pacchetti Samba 4.16.4, 4.15.9 e 4.14.14 che risolvono 5 vulnerabilit\u00e0. \u00c8 possibile seguire le versioni degli aggiornamenti dei pacchetti nelle distribuzioni: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD.    <\/p>\n<p>La vulnerabilit\u00e0 pi\u00f9 critica (CVE-2022-32744) consente agli utenti del dominio Active Directory di modificare la password di qualsiasi utente, inclusa la password dell'amministratore, ottenendo cos\u00ec il controllo totale sul dominio. Questo problema si verifica poich\u00e9 il KDC accetta richieste kpasswd criptate con qualsiasi chiave nota.     <\/p>\n<p>Un aggressore con accesso a  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/domain\/\"   title=\"dominio\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1234\">dominio<\/a>, pu\u00f2 inviare una richiesta falsa per impostare una nuova password a nome di un altro utente, crittografandola con la propria chiave, e il KDC la elaborer\u00e0 senza verificare la corrispondenza della chiave dell'account. Ci\u00f2 include l\u2019uso di chiavi dei controller di dominio, che funzionano solo in modalit\u00e0 di sola lettura (RODC), le quali non hanno l'autorit\u00e0 per cambiare password. Come misura protettiva, si pu\u00f2 disabilitare il supporto per il protocollo kpasswd aggiungendo in smb.conf la riga &#171;kpasswd port = 0&#187;.    <\/p>\n<p>Altre vulnerabilit\u00e0:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-32746 &#8212; gli utenti di Active Directory possono provocare accessi alla memoria dopo la sua liberazione (use-after-free) nel processo server inviando richieste LDAP appositamente formulate &#171;add&#187; o &#171;modify&#187;. Questo problema \u00e8 causato dal fatto che il modulo di registrazione dell'audit accede al contenuto del messaggio LDAP dopo che il modulo del database ha liberato la memoria assegnata al messaggio. Per condurre l'attacco, \u00e8 necessaria l'autorizzazione per aggiungere o modificare alcuni attributi privilegiati, come userAccountControl.\n<li class=\"l\"> CVE-2022-2031 &#8212; gli utenti di Active Directory possono eludere alcune restrizioni nel controller di dominio. KDC e il servizio kpasswd hanno la possibilit\u00e0 di decrittografare i ticket l'uno dell'altro, poich\u00e9 condividono un insieme comune di chiavi e account. Di conseguenza, un utente che ha richiesto di cambiare password pu\u00f2 utilizzare il ticket ricevuto per accedere ad altri servizi.\n<li class=\"l\"> CVE-2022-32745 &#8212; gli utenti di Active Directory possono causare il crash del processo server inviando richieste LDAP &#171;add&#187; o &#171;modify&#187; che portano ad accedere a dati non inizializzati.\n<li class=\"l\"> CVE-2022-32742 &#8212; fuga di informazioni sul contenuto della memoria <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3841\">server<\/a> attraverso manipolazioni con il protocollo SMB1. Un client SMB1, avente diritti di scrittura in uno spazio condiviso, pu\u00f2 creare condizioni per scrivere porzioni del contenuto della memoria del processo server in un file o inviarle a una stampante. L'attacco avviene tramite l\u2019invio di una richiesta &#171;write&#187; specificando un intervallo errato. Questo problema riguarda solo le versioni di Samba fino a 4.11 (nella versione 4.11, il supporto per SMB1 \u00e8 disabilitato per impostazione predefinita).                 <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57565\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.16.4, 4.15.9 \u0438 4.14.14 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412\u044b\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u043e\u0441\u043b\u0435\u0434\u0438\u0442\u044c \u043d\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430\u0445: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-32744) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c \u0434\u043e\u043c\u0435\u043d\u0430 Active Directory \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u044c \u043b\u044e\u0431\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u043c\u043e\u0436\u043d\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u044c \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043d\u0430\u0434 \u0434\u043e\u043c\u0435\u043d\u043e\u043c. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 [&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-104724","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b 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