{"id":54354,"date":"2019-12-24T00:00:00","date_gmt":"2019-12-23T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uyazvimost-v-sqlite-pozvolyayushhaya-udalyonno-atakovat-chrome-cherez-websql"},"modified":"2020-02-18T14:02:21","modified_gmt":"2020-02-18T11:02:21","slug":"uyazvimost-v-sqlite-pozvolyayushhaya-udalyonno-atakovat-chrome-cherez-websql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/uyazvimost-v-sqlite-pozvolyayushhaya-udalyonno-atakovat-chrome-cherez-websql","title":{"rendered":"Vulnerabilit\u00e0 in SQLite che consente un attacco remoto a Chrome tramite WebSQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Investigatori della sicurezza della compagnia cinese Tencent hanno presentato<\/a><\/noindex> una nuova variante di vulnerabilit\u00e0 Magellan<\/a><\/noindex> (CVE-2019-13734<\/a><\/noindex>), che permette di eseguire codice durante l'elaborazione di particolari strutture SQL all'interno del DBMS SQLite. Una vulnerabilit\u00e0 simile \u00e8 stata \u00e8 stata pubblicata<\/a><\/noindex> individuata dagli stessi ricercatori un anno fa. La vulnerabilit\u00e0 \u00e8 notevole in quanto consente di attaccare remotamente il browser Chrome e ottenere il controllo del sistema dell'utente aprendo pagine web sotto il controllo di un malintenzionato. <\/p>\n

L'attacco su Chrome\/Chromium avviene attraverso l'API WebSQL, il cui gestore si basa sul codice SQLite. Gli attacchi su altre applicazioni sono possibili solo se consentono la trasmissione di strutture SQL in SQLite provenienti dall'esterno, per esempio, utilizzando SQLite come formato per lo scambio di dati. Firefox non \u00e8 vulnerabile, poich\u00e9 la compagnia Mozilla hanno rifiutato<\/a><\/noindex> ha rimosso questa funzionalit\u00e0 da uso<\/a><\/noindex> API IndexedDB. <\/p>\n

Google ha risolto il problema nella versione Chrome 79<\/a><\/noindex>. Il problema nel codice sorgente di SQLite \u00e8 stato \u00e8 stata corretta<\/a><\/noindex> 17 novembre, e nel codice sorgente di Chromium \u2014 il 21 novembre<\/a><\/noindex>.
\nIl problema \u00e8 presente nel codice<\/a><\/noindex> del motore di ricerca full-text FTS3 e, tramite manipolazioni con le shadow tables (shadow tables, un particolare tipo di tabelle virtuali scrivibili), pu\u00f2 portare a danneggiare l'indice e il buffer overflow. Informazioni dettagliate sulla tecnica di sfruttamento saranno pubblicate dopo 90 giorni.<\/p>\n

Una nuova versione di SQLite con la correzione non \u00e8 ancora stata formata<\/a><\/noindex> (si prevede<\/a><\/noindex> entro il 31 dicembre). Come soluzione temporanea a partire da SQLite 3.26.0 \u00e8 possibile utilizzare la modalit\u00e0 SQLITE_DBCONFIG_DEFENSIVE, che vieta la scrittura nelle shadow tables ed \u00e8 raccomandata per l'utilizzo durante l'elaborazione delle query SQL esterne in SQLite. Nei pacchetti, la vulnerabilit\u00e0 nella libreria SQLite rimane ancora non corretta in Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, openSUSE\/SUSE<\/a><\/noindex>, Arch Linux<\/a><\/noindex>, Fedora<\/a><\/noindex>, FreeBSD<\/a><\/noindex>. Chromium \u00e8 gi\u00e0 stato aggiornato in tutte le distribuzioni ed \u00e8 immune dalla vulnerabilit\u00e0, ma il problema potrebbe interessare vari browser e applicazioni di terze parti che utilizzano il motore Chromium, oltre alle applicazioni Android basate su Webview.<\/p>\n

Inoltre, in SQLite sono state individuate anche 4 problematiche meno gravi (CVE-2019-13750<\/a><\/noindex>, CVE-2019-13751<\/a><\/noindex>, CVE-2019-13752<\/a><\/noindex>, CVE-2019-13753<\/a><\/noindex>), che possono portare a perdite di informazioni e a bypassare le restrizioni (possono essere utilizzati come fattori concomitanti per un attacco a Chrome). I problemi indicati sono stati risolti nel codice di SQLite il 13 dicembre. Complessivamente, i problemi hanno permesso ai ricercatori di preparare un exploit funzionante in grado di eseguire codice nel contesto del processo Chromium responsabile del rendering.<\/p>\n

<\/a><\/noindex><\/p>\n

Fonte: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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