{"id":52355,"date":"2019-11-06T00:00:00","date_gmt":"2019-11-05T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/uyazvimosti-v-cpio-i-libarchive"},"modified":"2020-02-18T14:00:03","modified_gmt":"2020-02-18T11:00:03","slug":"uyazvimosti-v-cpio-i-libarchive","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/uyazvimosti-v-cpio-i-libarchive","title":{"rendered":"Vulnerabilit\u00e0 in cpio e libarchive","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo quattro anni dal precedente rilascio <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/info-gnu@gnu.org\/msg02668.html\">pubblicato<\/a><\/noindex> \u00e8 disponibile il rilascio dell'utility per l'archiviazione dei file cpio 2.13, utilizzata nei pacchetti RPM e in initramfs. Nel nuovo rilascio sono state corrette tre vulnerabilit\u00e0:<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.suse.com\/show_bug.cgi?id=CVE-2015-1197\">CVE-2015-1197<\/a><\/noindex> &#8212; consente di sovrascrivere file al di fuori della directory in cui si estrae l'archivio.\n<li class=\"l\">  <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.suse.com\/show_bug.cgi?id=CVE-2016-2037\">CVE-2016-2037<\/a><\/noindex> &#8212; causa una scrittura nell'area al di fuori del buffer selezionato durante l'elaborazione di file cpio formattati specificamente;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.redhat.com\/show_bug.cgi?id=CVE-2019-14866\">CVE-2019-14866<\/a><\/noindex>) &#8212; a causa di un controllo insufficiente dell'intestazione del file TAR, consente la creazione di un archivio in formato TAR da un elenco di file, nel caso in cui nell'elenco sia presente un tar-archivio particolarmente grande formattato specificamente, generando un archivio risultante che include file estratti dall'archivio tar aggiunto con diritti di accesso errati.\n<p>    tar cf suffix.tar AUTHORS<br \/>\n    dd if=\/dev\/zero seek=16G bs=1 count=0 of=suffix.tar<br \/>\n    echo suffix.tar | cpio -H tar -o | tar tvf &#8212;<\/p>\n<p>    -rw-r&#8212;r&#8212; 1000\/1000       0 2019-08-30 16:40 suffix.tar<br \/>\n    -rw-r&#8212;r&#8212; thomas\/thomas 161 2019-08-30 16:40 AUTHORS<\/p>\n<\/ul>\n<p>Inoltre, nella libreria <noindex><a rel=\"nofollow\" href=\"https:\/\/www.libarchive.org\/\">Libarchive<\/a><\/noindex>, che fornisce strumenti per lavorare con vari formati di archivi e file compressi, <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.firosolutions.com\/exploits\/libarchi\">\u00e8 stata rilevata<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.suse.com\/show_bug.cgi?id=CVE-2019-18408\">una vulnerabilit\u00e0<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2019-18408\">CVE-2019-18408<\/a><\/noindex>), che porta a un accesso a un blocco di memoria gi\u00e0 liberato (use-after-free) durante l'elaborazione di file appositamente formattati in RAR. Il problema potrebbe portare all'esecuzione di codice da parte di un malintenzionato, ma la possibilit\u00e0 di sfruttamento \u00e8 considerata molto bassa (il livello di pericolo \u00e8 stato assegnato a 4.4 su 10, cio\u00e8 il problema \u00e8 stato riconosciuto come non critico). Il problema senza ulteriore divulgazione <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/libarchive\/libarchive\/commit\/b8592ecba2f9e451e1f5cb7ab6dcee8b8e7b3f60\">risolto<\/a><\/noindex> in rilascio <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/libarchive\/libarchive\/releases\/tag\/v3.4.0\">3.4.0<\/a><\/noindex>.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51820\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0443\u0441\u0442\u044f \u0447\u0435\u0442\u044b\u0440\u0435 \u0433\u043e\u0434\u0430 \u0441 \u043c\u043e\u043c\u0435\u043d\u0442\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0443\u0442\u0438\u043b\u0438\u0442\u044b \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0444\u0430\u0439\u043b\u043e\u0432 cpio 2.13, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0432 \u043f\u0430\u043a\u0435\u0442\u0430\u0445 RPM \u0438 \u0432 initramfs. \u0412 \u043d\u043e\u0432\u043e\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0442\u0440\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2015-1197 &#8212; \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0444\u0430\u0439\u043b\u044b \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u043c\u0438 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0440\u0430\u0441\u043a\u0440\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0432. CVE-2016-2037 &#8212; \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u0432\u043d\u0435 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 [&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-52355","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com 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