{"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\/hu\/blog\/news\/uyazvimost-v-sqlite-pozvolyayushhaya-udalyonno-atakovat-chrome-cherez-websql","title":{"rendered":"SQLite sebezhet\u0151s\u00e9g, amely lehet\u0151v\u00e9 teszi a Chrome t\u00e1voli t\u00e1mad\u00e1s\u00e1t a WebSQL-en kereszt\u00fcl.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A k\u00ednai Tencent biztons\u00e1gi kutat\u00f3i bemutatt\u00e1k<\/a><\/noindex> \u00faj sebezhet\u0151s\u00e9g-vari\u00e1ns Magellan<\/a><\/noindex> (CVE-2019-13734<\/a><\/noindex>), amely lehet\u0151v\u00e9 teszi a k\u00f3d v\u00e9grehajt\u00e1s\u00e1t bizonyos m\u00f3don megfogalmazott SQL-parancsok SQLite adatb\u00e1zisban val\u00f3 feldolgoz\u00e1sa sor\u00e1n. Hasonl\u00f3 sebezhet\u0151s\u00e9g kiad\u00e1sra ker\u00fclt<\/a><\/noindex> a m\u00falt \u00e9vben az ugyanazon kutat\u00f3k \u00e1ltal. A sebezhet\u0151s\u00e9g figyelemre m\u00e9lt\u00f3, mivel lehet\u0151v\u00e9 teszi a Chrome b\u00f6ng\u00e9sz\u0151 t\u00e1voli t\u00e1mad\u00e1s\u00e1t, \u00e9s a felhaszn\u00e1l\u00f3i rendszer feletti ir\u00e1ny\u00edt\u00e1s megszerz\u00e9s\u00e9t ir\u00e1ny\u00edtott weboldalak megnyit\u00e1s\u00e1val. <\/p>\n

A Chrome\/Chromium ellen ir\u00e1nyul\u00f3 t\u00e1mad\u00e1s a WebSQL API-n kereszt\u00fcl hajthat\u00f3 v\u00e9gre, amelynek kezel\u0151je az SQLite k\u00f3dj\u00e1ra \u00e9p\u00fcl. M\u00e1s alkalmaz\u00e1sok ellen a t\u00e1mad\u00e1s csak akkor lehets\u00e9ges, ha azok lehet\u0151v\u00e9 teszik SQL-parancsok k\u00fclsej\u00e9r\u0151l \u00e9rkez\u0151 feldolgoz\u00e1s\u00e1t, p\u00e9ld\u00e1ul ha az SQLite-ot haszn\u00e1lj\u00e1k adat\u00e1tviteli form\u00e1tumk\u00e9nt. A Firefox nem sebezhet\u0151, mivel a Mozilla lemondtak<\/a><\/noindex> az WebSQL megval\u00f3s\u00edt\u00e1s\u00e1t a<\/a><\/noindex> IndexedDB API jav\u00e1ra. <\/p>\n

A Google a probl\u00e9ma jav\u00edt\u00e1s\u00e1t v\u00e9grehajtotta a Chrome 79<\/a><\/noindex>. Az SQLite k\u00f3dalapj\u00e1n a probl\u00e9ma m\u00e1r jav\u00edtva<\/a><\/noindex> November 17, and in the Chromium codebase \u2014 november 21-\u00e9n<\/a><\/noindex>.
\nA probl\u00e9ma jelen van az k\u00f3d<\/a><\/noindex> FTS3 teljes sz\u00f6veg keres\u0151motorj\u00e1ban, \u00e9s a shadow tables (\u00e1rny\u00e9kt\u00e1bl\u00e1k, egy k\u00fcl\u00f6nleges virtu\u00e1lis t\u00e1blat\u00edpus \u00edr\u00e1si lehet\u0151s\u00e9ggel) manipul\u00e1ci\u00f3ja indexk\u00e1rosod\u00e1st \u00e9s puffer-t\u00falcsordul\u00e1st okozhat. A kihaszn\u00e1l\u00e1si technik\u00e1val kapcsolatos r\u00e9szletes inform\u00e1ci\u00f3kat 90 napon bel\u00fcl publik\u00e1lnak.<\/p>\n

Az SQLite \u00faj kiad\u00e1sa a jav\u00edt\u00e1ssal m\u00e9g nincs elk\u00e9sz\u00edtve<\/a><\/noindex> (v\u00e1rhat\u00f3<\/a><\/noindex> december 31-\u00e9n). Az SQLite 3.26.0-\u00e1t\u00f3l kezdve a v\u00e9delem alternat\u00edv m\u00f3dszere a SQLITE_DBCONFIG_DEFENSIVE m\u00f3d haszn\u00e1lata lehet, amely megakad\u00e1lyozza a \u00edr\u00e1st az \u00e1rny\u00e9kt\u00e1bl\u00e1kba, \u00e9s javasolt a k\u00fcls\u0151 SQL-keres\u00e9sek feldolgoz\u00e1sa sor\u00e1n az SQLite-ban. Az el\u00e9rhet\u0151 disztrib\u00faci\u00f3kban a SQLite k\u00f6nyvt\u00e1r sebezhet\u0151s\u00e9ge m\u00e9g jav\u00edtatlan. Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, openSUSE\/SUSE<\/a><\/noindex>, Arch Linux<\/a><\/noindex>, Fedora<\/a><\/noindex>, FreeBSD<\/a><\/noindex>. A Chromium m\u00e1r minden disztrib\u00faci\u00f3ban friss\u00edtve van, \u00e9s nem sebezhet\u0151, de a probl\u00e9ma k\u00fcl\u00f6nb\u00f6z\u0151 harmadik f\u00e9lt\u0151l sz\u00e1rmaz\u00f3 b\u00f6ng\u00e9sz\u0151ket \u00e9s alkalmaz\u00e1sokat is \u00e9rinthet, amelyek a Chromium motorj\u00e1t haszn\u00e1lj\u00e1k, valamint Android alkalmaz\u00e1sokat, amelyek Webview-n alapulnak.<\/p>\n

Tov\u00e1bb\u00e1 az SQLite-ban tov\u00e1bbi 4 kev\u00e9sb\u00e9 vesz\u00e9lyes probl\u00e9ma is azonos\u00edt\u00e1sra ker\u00fclt (CVE-2019-13750<\/a><\/noindex>, CVE-2019-13751<\/a><\/noindex>, CVE-2019-13752<\/a><\/noindex>, CVE-2019-13753<\/a><\/noindex>), amelyek inform\u00e1ci\u00f3sziv\u00e1rg\u00e1shoz \u00e9s korl\u00e1toz\u00e1sok megker\u00fcl\u00e9s\u00e9hez vezethetnek (k\u00eds\u00e9r\u0151 t\u00e9nyez\u0151k\u00e9nt haszn\u00e1lhat\u00f3k a Chrome elleni t\u00e1mad\u00e1shoz). A megadott probl\u00e9m\u00e1kat az SQLite k\u00f3dj\u00e1ban 2023. december 13-\u00e1n jav\u00edtott\u00e1k. \u00d6sszess\u00e9g\u00e9ben a probl\u00e9m\u00e1k lehet\u0151v\u00e9 tett\u00e9k a kutat\u00f3k sz\u00e1m\u00e1ra, hogy m\u0171k\u00f6d\u0151k\u00e9pes exploitot k\u00e9sz\u00edtsenek, amely lehet\u0151v\u00e9 teszi a k\u00f3d v\u00e9grehajt\u00e1s\u00e1t a Chromium folyamat\u00e1nak kontextus\u00e1ban, amely a renderel\u00e9s\u00e9rt felel\u0151s.<\/p>\n

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

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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