{"id":110482,"date":"2023-10-05T03:11:34","date_gmt":"2023-10-05T01:11:34","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-exim-obnaruzhili-kriticheskie-uyazvimosti-pozvolyashhie-vypolnit-na-servere-proizvolnyj-kod"},"modified":"2023-10-05T03:11:34","modified_gmt":"2023-10-05T01:11:34","slug":"v-exim-obnaruzhili-kriticheskie-uyazvimosti-pozvolyashhie-vypolnit-na-servere-proizvolnyj-kod","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/v-exim-obnaruzhili-kriticheskie-uyazvimosti-pozvolyashhie-vypolnit-na-servere-proizvolnyj-kod","title":{"rendered":"I Exim har der v\u00e6ret kritiske s\u00e5rbarheder, som muligg\u00f8r eksekvering af vilk\u00e5rlig kode p\u00e5 serveren.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

ZDI (Zero Day Initiative) har offentliggjort oplysninger om tre kritiske s\u00e5rbarheder i mailserveren Exim, som muligg\u00f8r eksekvering af vilk\u00e5rlig kode p\u00e5 vegne af serverprocessen, der har \u00e5bnet port 25. Der kr\u00e6ves ikke autentificering p\u00e5 serveren for at udf\u00f8re angrebet.<\/p>\n

    <\/p>\n
  1. CVE-2023-42115<\/a> \u2014 muligg\u00f8r, at man kan skrive sine data uden for den tildelte buffer. Det skyldes en fejl i valideringen af inddata i SMTP-tjenesten.<\/li>\n

    <\/noindex> <\/p>\n

  2. CVE-2023-42116<\/a> \u2013 opst\u00e5r ved at kopiere data fra brugeren til en buffer med fast st\u00f8rrelse uden at kontrollere den n\u00f8dvendige st\u00f8rrelse.<\/li>\n
  3. CVE-2023-42117<\/a> \u2013 er ogs\u00e5 for\u00e5rsaget af manglende validering af inddata p\u00e5 port 25 af SMTP-tjenesten.<\/li>\n<\/ol>\n

    S\u00e5rbarhederne er klassificeret som 0-day, hvilket betyder, at de ikke er blevet rettet, selvom ZDI oplyser, at udviklerne af Exim l\u00e6nge har v\u00e6ret advaret om deres eksistens. Det er muligt, at rettelsen vil komme i version 4.97 af serveren, men det er ikke sikkert.<\/p>\n

    Som beskyttelse mod disse s\u00e5rbarheder anbefales det i \u00f8jeblikket at begr\u00e6nse adgangen til SMTP p\u00e5 port 25.<\/p>\n

    <\/p>\n

    UPD.<\/strong> Det ser ud til, at det ikke er s\u00e5 skr\u00e6mmende. Disse s\u00e5rbarheder er lokale. De virker ikke, hvis serveren ikke bruger NTLM og EXTERNAL autentificering, ikke er beskyttet bag en proxy, ikke bruger potentielt farlige DNS-servere og ikke anvender spf i acl. L\u00e6s mere…<\/a><\/p>\n

    <\/noindex><\/p>\n

    Kilde: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

    ZDI (Zero Day Initiative) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e \u0442\u0440\u0435\u0445 \u043d\u0430\u0439\u0434\u0435\u043d\u043d\u044b\u0445 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u0435 Exim, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u043e\u0442 \u0438\u043c\u0435\u043d\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043e\u0442\u043a\u0440\u044b\u0432\u0448\u0435\u0433\u043e 25\u0439 \u043f\u043e\u0440\u0442. \u0414\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f. CVE-2023-42115 \u2014 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0437\u0430\u043f\u0438\u0441\u0438 \u0441\u0432\u043e\u0438\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u0433\u0440\u0430\u043d\u0438\u0446\u0430\u043c\u0438 \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430.\u00a0\u0412\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0432\u0445\u043e\u0434\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0441\u0435\u0440\u0432\u0438\u0441\u0435 SMTP. CVE-2023-42116 \u2013\u00a0\u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435\u043c […]<\/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-110482","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\udd47I Exim har der v\u00e6ret kritiske s\u00e5rbarheder, som muligg\u00f8r eksekvering af vilk\u00e5rlig kode p\u00e5 serveren | ProHoster","description":"ZDI (Zero Day Initiative) har offentliggjort oplysninger om tre kritiske s\u00e5rbarheder i mailserveren Exim, som muligg\u00f8r eksekvering af vilk\u00e5rlig kode p\u00e5 vegne af serverprocessen, der har \u00e5bnet port 25.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/news\/v-exim-obnaruzhili-kriticheskie-uyazvimosti-pozvolyashhie-vypolnit-na-servere-proizvolnyj-kod","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"da_DK","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\udd47\u0412 Exim \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0449\u0438\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 | ProHoster","og:description":"ZDI (Zero Day Initiative) \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e \u0442\u0440\u0435\u0445 \u043d\u0430\u0439\u0434\u0435\u043d\u043d\u044b\u0445 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u043c \u0441\u0435\u0440\u0432\u0435\u0440\u0435 Exim, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u043e\u0442 \u0438\u043c\u0435\u043d\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043e\u0442\u043a\u0440\u044b\u0432\u0448\u0435\u0433\u043e 25\u0439 \u043f\u043e\u0440\u0442.","og:url":"https:\/\/prohoster.info\/da\/blog\/news\/v-exim-obnaruzhili-kriticheskie-uyazvimosti-pozvolyashhie-vypolnit-na-servere-proizvolnyj-kod","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":"2023-10-05T01:11:34+00:00","article:modified_time":"2023-10-05T01:11:34+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\/da\/wp-json\/wp\/v2\/posts\/110482","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/comments?post=110482"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/posts\/110482\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/media?parent=110482"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/categories?post=110482"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/da\/wp-json\/wp\/v2\/tags?post=110482"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}