{"id":144522,"date":"2025-10-09T11:12:23","date_gmt":"2025-10-09T09:12:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-redis-i-valkey-pozvolyayushhie-vypolnit-kod-na-servere-pri-nalichii-dostupa-k-bd"},"modified":"2025-10-09T11:12:23","modified_gmt":"2025-10-09T09:12:23","slug":"uyazvimosti-v-redis-i-valkey-pozvolyayushhie-vypolnit-kod-na-servere-pri-nalichii-dostupa-k-bd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uyazvimosti-v-redis-i-valkey-pozvolyayushhie-vypolnit-kod-na-servere-pri-nalichii-dostupa-k-bd","title":{"rendered":"Vulnerabilit\u00e0 in Redis e Valkey, che consentono l'esecuzione di codice sul server in caso di accesso al database.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>I ricercatori di Wiz hanno identificato una vulnerabilit\u00e0 nel database Redis (CVE-2025-49844) che consente l'esecuzione remota di codice (RCE) sul server. Il problema ha ricevuto il livello di rischio massimo (punteggio CVSS 10 su 10); per sfruttare la vulnerabilit\u00e0, un attaccante deve avere la possibilit\u00e0 di inviare richieste al database Redis che consente l'esecuzione di script Lua personalizzati.    <\/p>\n<p>Oltre agli esemplari pubblicamente accessibili di Redis, che offrono accesso senza autenticazione, la vulnerabilit\u00e0 permette di compromettere i sistemi cloud e le piattaforme di hosting che supportano servizi per lavorare con Redis. Secondo Wiz, la scansione della rete ha rivelato circa 330.000 server Redis in ascolto, di cui circa 60.000 accettano richieste senza autenticazione. L'immagine ufficiale del contenitore Docker fornita dal progetto Redis \u00e8 configurata per l'accesso senza autenticazione per impostazione predefinita.       <\/p>\n<p>La vulnerabilit\u00e0 \u00e8 causata da un accesso a memoria gi\u00e0 liberata (use-after-free), manifestandosi durante la manipolazione del garbage collector tramite uno script Lua appositamente formattato. Il problema consente di eludere l'isolamento sandbox dell'ambiente Lua in Redis ed eseguire codice nel sistema principale con i diritti dell'utente sotto il quale viene eseguito il database. \u00c8 interessante notare che l'errore \u00e8 rimasto inosservato per 13 anni. I ricercatori che hanno identificato il problema hanno dimostrato un exploit funzionante, ma i dettagli sull'exploit non sono ancora stati divulgati per consentire l'installazione degli aggiornamenti.    <\/p>\n<p>La vulnerabilit\u00e0 si manifesta anche nel progetto Valkey, che sviluppa un fork di Redis, fornito nella maggior parte delle distribuzioni Linux, comprese RedHat Enterprise Linux 10. La vulnerabilit\u00e0 \u00e8 stata corretta nelle versioni Redis 8.2.2, 8.0.4, 7.4.6, 7.2.11 e 6.2.20, cos\u00ec come in Valkey 8.1.4, 8.0.6 e 7.2.11. \u00c8 possibile controllare lo stato della nuova versione del pacchetto o della preparazione di una patch nelle distribuzioni alle seguenti pagine: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Gentoo, Arch, FreeBSD, OpenBSD e NetBSD. Come soluzione alternativa per proteggere il database, \u00e8 possibile disabilitare l'esecuzione di script Lua vietando i comandi EVAL e EVALSHA tramite ACL.    <\/p>\n<p>In aggiunta, si possono notare altre tre vulnerabilit\u00e0 sfruttabili attraverso gli script Lua e corrette nelle ultime versioni di Redis e Valkey. Per una protezione alternativa da queste vulnerabilit\u00e0, \u00e8 possibile vietare le famiglie di comandi EVAL e FUNCTION tramite ACL.    <\/p>\n<ul>\n<li class=\"l\"> CVE-2025-46817 \u2014 overflow intero nelle funzioni Lua delle librerie, che potrebbe consentire l'esecuzione di codice personalizzato sul lato server <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=\"3984\">server<\/a> quando vengono eseguiti script Lua appositamente progettati.\n<li class=\"l\"> CVE-2025-46819 \u2014 errore che porta alla lettura di dati al di fuori del buffer durante l'esecuzione di uno script Lua specificamente formattato. La vulnerabilit\u00e0 pu\u00f2 essere sfruttata per terminare in modo anomalo il processo del server Redis.\n<li class=\"l\"> CVE-2025-46818 \u2014 possibilit\u00e0 di eseguire comandi nel contesto di un altro utente del DBMS manipolando oggetti LUA da uno script Lua specificamente formattato.        <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64022\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Wiz \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0432 \u0421\u0423\u0411\u0414 Redis \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-49844), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0443\u044e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 (RCE) \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043d\u0430\u0438\u0432\u044b\u0441\u0448\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (CVSS score 10 \u0438\u0437 10), \u043f\u0440\u0438 \u044d\u0442\u043e\u043c \u0434\u043b\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u0434\u043e\u043b\u0436\u0435\u043d \u0438\u043c\u0435\u0442\u044c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u043a \u0421\u0423\u0411\u0414 Redis, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0435\u0439 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0445 Lua-\u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0432. \u041f\u043e\u043c\u0438\u043c\u043e \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0445 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u043e\u0432 Redis, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0445 \u0434\u043e\u0441\u0442\u0443\u043f \u0431\u0435\u0437 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438, [&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-144522","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 name=\"description\" content=\"\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Wiz \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0432 \u0421\u0423\u0411\u0414 Redis \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2025-49844), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0443\u044e \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e 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