{"id":184233,"date":"2026-11-12T11:41:15","date_gmt":"2026-11-12T09:41:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/udostoveryayushhij-czentr-emudhra-otozval-eshhyo-8-promezhutochnyh-kornevyh-sertifikatov"},"modified":"2026-11-12T11:41:21","modified_gmt":"2026-11-12T09:41:21","slug":"emudhra-certificate-authority-revokes-8-more-intermediate-root-certificates","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/emudhra-certificate-authority-revokes-8-more-intermediate-root-certificates","title":{"rendered":"Az eMudhra tan\u00fas\u00edtv\u00e1nykezel\u0151 nyolc \u00fajabb k\u00f6zbens\u0151 gy\u00f6k\u00e9rtan\u00fas\u00edtv\u00e1nyt vont vissza","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az eMudhra v\u00e1llalat tov\u00e1bbi r\u00e9szleteket t\u00e1rt fel az incidensr\u0151l, amely sor\u00e1n nyolc gy\u00f6k\u00e9r tan\u00fas\u00edtv\u00e1ny titkos kulcsai k\u00f6nnyen kital\u00e1lhat\u00f3v\u00e1 v\u00e1ltak, mind\u00f6ssze 1 b\u00e1jt entr\u00f3pi\u00e1val, a 48 b\u00e1jt helyett. A kor\u00e1bban azonos\u00edtott probl\u00e9m\u00e1s k\u00f6zbens\u0151 gy\u00f6k\u00e9r tan\u00fas\u00edtv\u00e1nyokon k\u00edv\u00fcl m\u00e9g 8 tan\u00fas\u00edtv\u00e1ny visszavon\u00e1s\u00e1r\u00f3l sz\u00e1moltak be, de nem az entr\u00f3pia probl\u00e9m\u00e1i miatt. Az elemz\u00e9s sor\u00e1n kider\u00fclt, hogy az entr\u00f3pi\u00e1val kapcsolatos probl\u00e9m\u00e1k forr\u00e1sa egy saj\u00e1t Python szkripttel volt, amelyet a k\u00fcl\u00f6nb\u00f6z\u0151 gy\u00e1rt\u00f3k hardveres kulcs t\u00e1rol\u00f3i (HSM) k\u00f6z\u00f6tti titkos kulcsok \u00e1thelyez\u00e9s\u00e9re haszn\u00e1ltak. A kulcsok \u00e1thelyez\u00e9se az \u00faj tan\u00fas\u00edtv\u00e1nyk\u00f6zponti k\u00f6vetelm\u00e9nyeknek megfelel\u0151 korszer\u0171s\u00edtett HSM modellek sz\u00e1ll\u00edt\u00e1s\u00e1nak k\u00e9sedelme miatt t\u00f6rt\u00e9nt. <\/p>\n

Egy hiba k\u00f6vetkezt\u00e9ben az ECDSA titkos kulcsok m\u00e9rete 1 b\u00e1jtra cs\u00f6kkent. Ezen k\u00edv\u00fcl a kulcsok HSM k\u00f6z\u00f6tti \u00e1thelyez\u00e9se sor\u00e1n a szkript a kulcsokat a sz\u00e1m\u00edt\u00f3g\u00e9p v\u00e9dtelen operat\u00edv mem\u00f3ri\u00e1j\u00e1ban kezelte, ahol futott, mik\u00f6zben a titkos kulcsokkal v\u00e9gzett m\u0171veleteket csak a HSM-en bel\u00fcl szabad v\u00e9grehajtani. A HSM napl\u00f3k meger\u0151s\u00edtett\u00e9k, hogy a hardveres t\u00e1rol\u00f3k megfelel\u0151en m\u0171k\u00f6dtek, \u00e9s a probl\u00e9m\u00e1t a h\u00e1zilag k\u00e9sz\u00edtett szkript haszn\u00e1lata okozta. <\/p>\n

Az ECDSA kulcsok mellett a szkriptot 8 RSA-4096 kulcs \u00e1thelyez\u00e9s\u00e9re is haszn\u00e1lt\u00e1k, amelyek nem szenvedtek entr\u00f3piai probl\u00e9m\u00e1kt\u00f3l, de a kulcsok norm\u00e1l mem\u00f3ri\u00e1ban t\u00f6rt\u00e9n\u0151 kezel\u00e9se megs\u00e9rti a tan\u00fas\u00edtv\u00e1nyk\u00f6zpontok biztons\u00e1gi k\u00f6vetelm\u00e9nyeit, ez\u00e9rt az RSA tan\u00fas\u00edtv\u00e1nyokat is visszavont\u00e1k.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f eMudhra \u0440\u0430\u0441\u043a\u0440\u044b\u043b\u0430 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0434\u0435\u0442\u0430\u043b\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u043e\u043c, \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0443 \u0432\u043e\u0441\u044c\u043c\u0438 \u043a\u043e\u0440\u043d\u0435\u0432\u044b\u0445 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0432 \u0443\u0434\u043e\u0441\u0442\u043e\u0432\u0435\u0440\u044f\u044e\u0449\u0435\u0433\u043e \u0446\u0435\u043d\u0442\u0440\u0430 \u043e\u043a\u0430\u0437\u0430\u043b\u0438\u0441\u044c \u043b\u0435\u0433\u043a\u043e \u043f\u043e\u0434\u0431\u0438\u0440\u0430\u0435\u043c\u044b\u0435 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0435 \u043a\u043b\u044e\u0447\u0438, 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\u0447\u0442\u043e \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u043c \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u044d\u043d\u0442\u0440\u043e\u043f\u0438\u0435\u0439 \u0441\u0442\u0430\u043b […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-184233","post","type-post","status-publish","format-standard","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\n","aioseo_head_json":{"title":"\ud83e\udd47Az eMudhra tan\u00fas\u00edtv\u00e1nyk\u00f6zpont m\u00e9g 8 k\u00f6zbens\u0151 gy\u00f6k\u00e9r tan\u00fas\u00edtv\u00e1nyt vonott vissza | ProHoster","description":"Az eMudhra v\u00e1llalat tov\u00e1bbi r\u00e9szleteket 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