{"id":181813,"date":"2026-05-30T20:48:06","date_gmt":"2026-05-30T18:48:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-exim-4-99-4-s-ustraneniem-uyazvimosti-privodyashhej-k-utechke-pamyati"},"modified":"2026-05-30T20:48:06","modified_gmt":"2026-05-30T18:48:07","slug":"obnovlenie-exim-4-99-4-s-ustraneniem-uyazvimosti-privodyashhej-k-utechke-pamyati","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-exim-4-99-4-s-ustraneniem-uyazvimosti-privodyashhej-k-utechke-pamyati","title":{"rendered":"Az Exim 4.99.4 friss\u00edt\u00e9se, amely a mem\u00f3ria sziv\u00e1rg\u00e1s\u00e1t okoz\u00f3 sebezhet\u0151s\u00e9get jav\u00edtja","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelent az Exim 4.99.4 levelez\u0151szerver jav\u00edt\u00f3kiad\u00e1sa, amely megsz\u00fcnteti a (CVE-2026-48840) sebezhet\u0151s\u00e9get, ami 16 inicializ\u00e1latlan b\u00e1jt sziv\u00e1rg\u00e1s\u00e1t okozta a folyamatkezel\u0151 verem\u00e9b\u0151l a kliensnek \u00e1tadott IPv6 c\u00edm SMTP Hello fejl\u00e9c\u00e9ben. A gyakorlatban a jav\u00edtott sziv\u00e1rg\u00e1s m\u00e1s sebezhet\u0151s\u00e9gek kiakn\u00e1z\u00e1sakor is felhaszn\u00e1lhat\u00f3 a mem\u00f3riaelrendez\u00e9s meghat\u00e1roz\u00e1s\u00e1ra c\u00edmrandomiz\u00e1l\u00e1ssal rendelkez\u0151 konfigur\u00e1ci\u00f3kban (ASLR). <\/p>\n

A probl\u00e9ma az Exim 4.88-as verzi\u00f3j\u00e1t\u00f3l (2017) jelentkezik olyan rendszerekben, amelyek hosts_proxy be\u00e1ll\u00edt\u00e1st haszn\u00e1lnak, \u00e9s az Exim olyan ford\u00edt\u00e1sai, amelyek a SUPPORT_PROXY opci\u00f3val lettek ford\u00edtva (alap\u00e9rtelmezett a Debian, Ubuntu, RHEL EPEL \u00e9s Fedora eset\u00e9ben). A sebezhet\u0151s\u00e9get a keretek m\u00e9ret\u00e9nek megfelel\u0151 ellen\u0151rz\u00e9s\u00e9nek hi\u00e1nya okozza a PROXYv2 protokollal v\u00e9gzett k\u00e9r\u00e9sek kezel\u00e9s\u00e9n\u00e9l.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.99.4, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-48840), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0443\u0442\u0435\u0447\u043a\u0435 16 \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0431\u0430\u0439\u0442 \u0438\u0437 \u0441\u0442\u0435\u043a\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 \u0432 \u043e\u0442\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0439 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\u0440\u0430\u043d\u0434\u043e\u043c\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u0430\u0434\u0440\u0435\u0441\u043e\u0432 (ASLR). \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181813","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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Az Exim 4.99.4 friss\u00edt\u00e9se, amely a mem\u00f3ria sziv\u00e1rg\u00e1s\u00e1t okoz\u00f3 sebezhet\u0151s\u00e9get jav\u00edtja | 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\u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 Exim 4.99.4 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430 Exim 4.99.4, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-48840), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0443\u0442\u0435\u0447\u043a\u0435 16 \u043d\u0435\u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0431\u0430\u0439\u0442 \u0438\u0437 \u0441\u0442\u0435\u043a\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430 \u0432 \u043e\u0442\u0434\u0430\u0432\u0430\u0435\u043c\u043e\u0439 \u043a\u043b\u0438\u0435\u043d\u0442\u0443.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-exim-4-99-4-s-ustraneniem-uyazvimosti-privodyashhej-k-utechke-pamyati","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":"2026-05-30T18:48:07+00:00","article:modified_time":"2026-05-30T18:48:07+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/181813","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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=181813"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/181813\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=181813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=181813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=181813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}