{"id":31611,"date":"2019-10-31T21:42:10","date_gmt":"2019-10-31T18:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/microsoft-otkazalas-ispravlyat-uyazvimost-nulevogo-dnya-v-nbsp-internet-explorer\/"},"modified":"2019-10-31T21:42:10","modified_gmt":"2019-10-31T18:42:10","slug":"microsoft-otkazalas-ispravlyat-uyazvimost-nulevogo-dnya-v-nbsp-internet-explorer","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/microsoft-otkazalas-ispravlyat-uyazvimost-nulevogo-dnya-v-nbsp-internet-explorer","title":{"rendered":"A Microsoft megtagadta a nulladik napi sebezhet\u0151s\u00e9g jav\u00edt\u00e1s\u00e1t az Internet Explorerben","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c1prilis 12-\u00e9n, p\u00e9nteken John Page, az inform\u00e1ci\u00f3biztons\u00e1gi szak\u00e9rt\u0151, k\u00f6zz\u00e9tette a leg\u00fajabb Internet Explorer verzi\u00f3ban felfedezett ortozott sebezhet\u0151s\u00e9gr\u0151l sz\u00f3l\u00f3 inform\u00e1ci\u00f3t, \u00e9s bemutatta annak kihaszn\u00e1l\u00e1s\u00e1t. Ez a sebezhet\u0151s\u00e9g potenci\u00e1lisan lehet\u0151v\u00e9 teszi a t\u00e1mad\u00f3k sz\u00e1m\u00e1ra, hogy helyi f\u00e1jlok tartalm\u00e1hoz jussanak a Windows rendszerek felhaszn\u00e1l\u00f3inak biztons\u00e1gi rendszer\u00e9t megker\u00fclve.<\/p>\n

\"A<\/p>\n

A sebezhet\u0151s\u00e9g abban rejlik, ahogyan az Internet Explorer kezeli az MHTML form\u00e1tum\u00fa f\u00e1jlokat, amelyek rendszerint .mht vagy .mhtml kiterjeszt\u00e9s\u0171ek. Ez a form\u00e1tum az Internet Explorerben alap\u00e9rtelmez\u00e9s szerint haszn\u00e1latos a weboldalak ment\u00e9s\u00e9re, lehet\u0151v\u00e9 t\u00e9ve, hogy az eg\u00e9sz oldal tartalma, bele\u00e9rtve a m\u00e9diaelemeket, egyetlen f\u00e1jlban legyen mentve. Jelenleg a legt\u00f6bb modern b\u00f6ng\u00e9sz\u0151 m\u00e1r nem menti a weboldalakat MHT form\u00e1tumban, \u00e9s a web\u00e9hez szabv\u00e1nyos HTML form\u00e1tumot haszn\u00e1l e c\u00e9lra, de tov\u00e1bbra is t\u00e1mogatj\u00e1k az ilyen f\u00e1jlok kezel\u00e9s\u00e9t, \u00e9s haszn\u00e1lhatj\u00e1k \u0151ket a megfelel\u0151 be\u00e1ll\u00edt\u00e1sok mellett vagy b\u0151v\u00edtm\u00e9nyek seg\u00edts\u00e9g\u00e9vel.<\/p>\n

A John \u00e1ltal felfedezett sebezhet\u0151s\u00e9g az XXE (XML eXternal Entity) sebezhet\u0151s\u00e9gek oszt\u00e1ly\u00e1ba tartozik, \u00e9s az Internet Explorer XML-k\u00f3dfeldolgoz\u00f3j\u00e1nak hib\u00e1s konfigur\u00e1l\u00e1s\u00e1b\u00f3l ered. \"Ez a sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi, hogy egy t\u00e1voli t\u00e1mad\u00f3 hozz\u00e1f\u00e9rjen a felhaszn\u00e1l\u00f3 helyi f\u00e1jlaihoz, \u00e9s p\u00e9ld\u00e1ul lek\u00e9rdezze a rendszerben telep\u00edtett szoftver verzi\u00f3j\u00e1t\" - mondja Page. \"\u00cdgy a 'c:Python27NEWS.txt' k\u00e9r\u00e9s megadja ennek a programnak (a Python \u00e9rtelmez\u0151 ebben az esetben) a verzi\u00f3j\u00e1t.\"<\/p>\n

<\/center><\/p>\n

Mivel a Windows rendszerekben minden MHT f\u00e1jl alap\u00e9rtelmez\u00e9s szerint az Internet Explorer-ben ny\u00edlik meg, ennek a biztons\u00e1gi r\u00e9snek a kihaszn\u00e1l\u00e1sa trivi\u00e1lis feladat, mivel a felhaszn\u00e1l\u00f3nak csak annyit kell tennie, hogy k\u00e9tszer r\u00e1kattint egy vesz\u00e9lyes f\u00e1jlra, amelyet e-mailen, k\u00f6z\u00f6ss\u00e9gi h\u00e1l\u00f3zatokon vagy \u00fczenetk\u00fcld\u0151 alkalmaz\u00e1sokban kapott.<\/p>\n

\"A<\/p>\n

\u00c1ltal\u00e1ban, amikor egy ActiveX-objektum p\u00e9ld\u00e1ny\u00e1t hozunk l\u00e9tre, mint p\u00e9ld\u00e1ul a Microsoft.XMLHTTP, a felhaszn\u00e1l\u00f3 biztons\u00e1gi figyelmeztet\u00e9st kap az Internet Explorerben, amely meger\u0151s\u00edt\u00e9st k\u00e9r a blokkolt tartalom aktiv\u00e1l\u00e1s\u00e1ra \u2013 magyar\u00e1zza a kutat\u00f3. \"Viszont, ha egy el\u0151re elk\u00e9sz\u00edtett .mht f\u00e1jlt nyitunk meg kifejezetten form\u00e1zott c\u00edmk\u00e9kkel, a felhaszn\u00e1l\u00f3 nem kap figyelmeztet\u00e9st a potenci\u00e1lisan vesz\u00e9lyes tartalomr\u00f3l.\"<\/p>\n

Page elmond\u00e1sa szerint sikeresen tesztelte a sebezhet\u0151s\u00e9get a legfrissebb Internet Explorer 11 verzi\u00f3val, amely minden leg\u00fajabb biztons\u00e1gi friss\u00edt\u00e9st tartalmaz a Windows 7, Windows 10 \u00e9s Windows Server 2012 R2 rendszerekben.<\/p>\n

Val\u00f3sz\u00edn\u0171leg az egyetlen j\u00f3 h\u00edr a nyilv\u00e1noss\u00e1g sz\u00e1m\u00e1ra ezen sebezhet\u0151s\u00e9g felfed\u00e9s\u00e9ben az, hogy az egykor domin\u00e1l\u00f3 Internet Explorer piaci r\u00e9szesed\u00e9se jelenleg mind\u00f6ssze 7,34%-ra cs\u00f6kkent a NetMarketShare szerint. De mivel a Windows az Internet Explorert haszn\u00e1lja alap\u00e9rtelmezett alkalmaz\u00e1sk\u00e9nt az MHT f\u00e1jlok megnyit\u00e1s\u00e1hoz, a felhaszn\u00e1l\u00f3knak nem sz\u00fcks\u00e9ges az IE-t alap\u00e9rtelmezett b\u00f6ng\u00e9sz\u0151k\u00e9nt telep\u00edteni\u00fck, \u00e9s m\u00e9g mindig sebezhet\u0151ek, am\u00edg az IE jelen van a rendszer\u00fckben, amennyiben nem figyelnek oda az online let\u00f6lt\u00f6tt f\u00e1jlok form\u00e1tum\u00e1ra.<\/p>\n

M\u00e1rcius 27-\u00e9n John \u00e9rtes\u00edtette a Microsoftot a b\u00f6ng\u00e9sz\u0151j\u00fckben l\u00e9v\u0151 sebezhet\u0151s\u00e9gr\u0151l, de \u00e1prilis 10-\u00e9n a kutat\u00f3 v\u00e1laszt kapott a c\u00e9gt\u0151l, amely kijelentette, hogy nem tartja kritikusan fontosnak ezt a probl\u00e9m\u00e1t.<\/p>\n

A Microsoft level\u00e9ben ezt \u00edrja: \"A jav\u00edt\u00e1s a k\u00f6vetkez\u0151 term\u00e9kverzi\u00f3val egy\u00fctt fog megjelenni. Jelenleg nem tervez\u00fcnk megold\u00e1st az \u00fcgyben.\"<\/p>\n

A Microsoft egy\u00e9rtelm\u0171 reakci\u00f3ja ut\u00e1n a kutat\u00f3 k\u00f6zz\u00e9tette a nulladik napi sebezhet\u0151s\u00e9g r\u00e9szleteit a weboldal\u00e1n, valamint demonstr\u00e1ci\u00f3s k\u00f3dot \u00e9s vide\u00f3t a YouTube-on.<\/p>\n<\/p>\n

\r\n \"Vide\u00f3\r\n
<\/div>\r\n <\/div><\/center><\/center><\/p>\n

B\u00e1r a sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1sa nem annyira egyszer\u0171, \u00e9s valamilyen m\u00f3don r\u00e1 kell k\u00e9nyszer\u00edteni a felhaszn\u00e1l\u00f3t, hogy ismeretlen MHT f\u00e1jlt ind\u00edtson el, ezt a sebezhet\u0151s\u00e9get nem szabad lebecs\u00fclni, a Microsoft reakci\u00f3j\u00e1nak hi\u00e1ny\u00e1val egy\u00fctt. Hackercsoportok m\u00e1r haszn\u00e1ltak MHT f\u00e1jlokat adathal\u00e1szatra \u00e9s rosszindulat\u00fa programok terjeszt\u00e9s\u00e9re a m\u00faltban, semmi sem akad\u00e1lyozza meg \u0151ket abban, hogy most is ezt tegy\u00e9k. <\/p>\n

Viszont ahhoz, hogy elker\u00fclje ezt \u00e9s sok hasonl\u00f3 sebezhet\u0151s\u00e9get, el\u00e9g figyelni a f\u00e1jlok kiterjeszt\u00e9s\u00e9re, amelyeket az internetr\u0151l kap, \u00e9s ellen\u0151rizni \u0151ket v\u00edruskeres\u0151vel vagy a VirusTotal weboldalon. Tov\u00e1bb\u00e1, a tov\u00e1bbi \u00f3vint\u00e9zked\u00e9s \u00e9rdek\u00e9ben egyszer\u0171en \u00e1ll\u00edtsa be a .mht vagy .mhtml f\u00e1jlok alap\u00e9rtelmezett alkalmaz\u00e1s\u00e1nak a kedvenc b\u00f6ng\u00e9sz\u0151j\u00e9t, amely elt\u00e9r az Internet Explorert\u0151l. P\u00e9ld\u00e1ul Windows 10-ben ezt viszonylag k\u00f6nnyen megteheti a 'Alap\u00e9rtelmezett alkalmaz\u00e1sok v\u00e1laszt\u00e1sa f\u00e1jlt\u00edpusokhoz' men\u00fcben.<\/p>\n

\"A<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
\n
Forr\u00e1s: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u044f\u0442\u043d\u0438\u0446\u0443 12 \u0430\u043f\u0440\u0435\u043b\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442 \u043f\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0414\u0436\u043e\u043d \u041f\u0435\u0439\u0434\u0436 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e \u043d\u0435\u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 Internet Explorer, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043b \u0435\u0451 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e. \u0414\u0430\u043d\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0443 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0441\u0438\u0441\u0442\u0435\u043c Windows, \u043c\u0438\u043d\u0443\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u043a\u0430\u043a Internet Explorer \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u0444\u0430\u0439\u043b\u044b \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 MHTML, \u043a\u0430\u043a \u043f\u0440\u0430\u0432\u0438\u043b\u043e, \u0438\u043c\u0435\u044e\u0449\u0438\u0445 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":23533,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-31611","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A Microsoft megtagadta a jav\u00edt\u00e1st az Internet Explorer nulladik napi sebezhet\u0151s\u00e9ge eset\u00e9ben | ProHoster","description":"\u00c1prilis 12-\u00e9n, p\u00e9nteken John Page, a kiberbiztons\u00e1gi szakember, k\u00f6zz\u00e9tette az Internet Explorer aktu\u00e1lis verzi\u00f3j\u00e1ban tal\u00e1lt jav\u00edtatlan sebezhet\u0151s\u00e9g inform\u00e1ci\u00f3it, valamint bemutatta annak kihaszn\u00e1l\u00e1s\u00e1t.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/microsoft-otkazalas-ispravlyat-uyazvimost-nulevogo-dnya-v-nbsp-internet-explorer","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47Microsoft \u043e\u0442\u043a\u0430\u0437\u0430\u043b\u0430\u0441\u044c \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u044f\u0442\u044c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043d\u0443\u043b\u0435\u0432\u043e\u0433\u043e \u0434\u043d\u044f \u0432 Internet Explorer | ProHoster","og:description":"\u0412 \u043f\u044f\u0442\u043d\u0438\u0446\u0443 12 \u0430\u043f\u0440\u0435\u043b\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442 \u043f\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0414\u0436\u043e\u043d \u041f\u0435\u0439\u0434\u0436 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e \u043d\u0435\u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 Internet Explorer, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043b \u0435\u0451 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/microsoft-otkazalas-ispravlyat-uyazvimost-nulevogo-dnya-v-nbsp-internet-explorer","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2019-10-31T18:42:10+00:00","article:modified_time":"2019-10-31T18:42:10+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"31611","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-21 06:59:22","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-03-01 03:14:43","updated":"2026-01-21 06:59:22","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/31611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=31611"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/31611\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media\/23533"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=31611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=31611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=31611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}