{"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\/hu\/blog\/news\/uyazvimosti-v-cpio-i-libarchive","title":{"rendered":"Hib\u00e1k a cpio \u00e9s a libarchive szoftverekben","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>N\u00e9gy \u00e9vvel az el\u0151z\u0151 kiad\u00e1s ut\u00e1n <noindex><a rel=\"nofollow\" href=\"https:\/\/www.mail-archive.com\/info-gnu@gnu.org\/msg02668.html\">megjelent<\/a><\/noindex> megjelen\u00e9sre ker\u00fclt a cpio 2.13 f\u00e1jlarchiv\u00e1l\u00f3 seg\u00e9dprogram, amelyet az RPM csomagokban \u00e9s az initramfs-ben haszn\u00e1lnak. Az \u00faj kiad\u00e1sban h\u00e1rom sebezhet\u0151s\u00e9get jav\u00edtottak ki:<\/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> \u2014 lehet\u0151v\u00e9 teszi, hogy f\u00e1jlokat \u00edrjunk az arch\u00edvum kib\u0151v\u00edtett k\u00f6nyvt\u00e1r\u00e1n k\u00edv\u00fcl.\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> \u2014 a kifejezetten form\u00e1zott cpio f\u00e1jlok feldolgoz\u00e1sa sor\u00e1n a kijel\u00f6lt pufferen k\u00edv\u00fcli \u00edr\u00e1st eredm\u00e9nyez.\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>) \u2014 a TAR-f\u00e1jl fejl\u00e9c\u00e9nek el\u00e9gtelen ellen\u0151rz\u00e9se miatt lehet\u0151v\u00e9 teszi, hogy TAR form\u00e1tum\u00fa arch\u00edvum l\u00e9trehoz\u00e1sa eset\u00e9n, ha a f\u00e1jllista tartalmaz egy kifejezetten form\u00e1zott, nagyon nagy tar-arch\u00edvumot, l\u00e9trej\u00f6jj\u00f6n egy eredm\u00e9ny arch\u00edvum, amely tartalmazza azokat a f\u00e1jlokat, amelyek a hib\u00e1s jogosults\u00e1g\u00fa hozz\u00e1adott tar-arch\u00edvumb\u00f3l lettek kib\u0151v\u00edtve.\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 \u2014<\/p>\n<p>    -rw-r\u2014r\u2014 1000\/1000       0 2019-08-30 16:40 suffix.tar<br \/>\n    -rw-r\u2014r\u2014 thomas\/thomas 161 2019-08-30 16:40 AUTHORS<\/p>\n<\/ul>\n<p>Ezen k\u00edv\u00fcl a <noindex><a rel=\"nofollow\" href=\"https:\/\/www.libarchive.org\/\">Libarchive<\/a><\/noindex>k\u00f6nyvt\u00e1r, amely k\u00fcl\u00f6nb\u00f6z\u0151 arch\u00edvumform\u00e1tumok \u00e9s t\u00f6m\u00f6r\u00edtett f\u00e1jlok kezel\u00e9s\u00e9re szolg\u00e1l\u00f3 eszk\u00f6z\u00f6ket biztos\u00edt, <noindex><a rel=\"nofollow\" href=\"https:\/\/blog.firosolutions.com\/exploits\/libarchi\">identified<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/bugzilla.suse.com\/show_bug.cgi?id=CVE-2019-18408\">vulnerability<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2019-18408\">CVE-2019-18408<\/a><\/noindex>), amely m\u00e1r felszabad\u00edtott mem\u00f3ria-blokk (use-after-free) el\u00e9r\u00e9s\u00e9hez vezet, k\u00fcl\u00f6nlegesen form\u00e1zott RAR f\u00e1jlok feldolgoz\u00e1sa sor\u00e1n. A probl\u00e9ma potenci\u00e1lisan lehet\u0151s\u00e9get adhat a k\u00f3dfuttat\u00e1sra a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra, azonban a kihaszn\u00e1l\u00e1s val\u00f3sz\u00edn\u0171s\u00e9ge alacsonynak sz\u00e1m\u00edt (a vesz\u00e9lyess\u00e9gi szint 4,4 a 10-b\u0151l, azaz a probl\u00e9ma nem min\u0151s\u00fcl vesz\u00e9lyesnek). A probl\u00e9ma an\u00e9lk\u00fcl old\u00f3dik meg, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/libarchive\/libarchive\/commit\/b8592ecba2f9e451e1f5cb7ab6dcee8b8e7b3f60\">eliminates<\/a><\/noindex> a kiad\u00e1sban <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>Forr\u00e1s: <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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta 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