{"id":72877,"date":"2020-03-05T08:42:10","date_gmt":"2020-03-05T05:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki"},"modified":"2020-03-05T08:42:10","modified_gmt":"2020-03-05T05:42:10","slug":"letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/administrirovanie\/letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki","title":{"rendered":"LetsEncrypt planl\u00e6gger at tilbagekalde deres certifikater p\u00e5 grund af en softwarefejl","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"LetsEncrypt planl\u00e6gger at tilbagekalde deres certifikater p\u00e5 grund af en softwarefejl\" src=\"\/wp-content\/uploads\/2020\/03\/b954f1ddd1b367591a9548984f21cfbb.jpg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\nLetsEncrypt, der tilbyder gratis SSL-certifikater til kryptering, er n\u00f8dt til at annullere nogle certifikater.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p>Problemet er relateret til <noindex><a rel=\"nofollow\" href=\"https:\/\/community.letsencrypt.org\/t\/2020-02-29-caa-rechecking-bug\/114591\">en softwarefejl<\/a><\/noindex> i det administrative software Boulder, der anvendes til at opbygge CA. Normalt sker kontrol af DNS CAA-poster samtidigt med bekr\u00e6ftelsen af ejerskab af dom\u00e6net, og de fleste abonnenter modtager certifikatet straks efter bekr\u00e6ftelsen, men softwareudviklerne har gjort det s\u00e5dan, at resultatet af bekr\u00e6ftelsen anses for best\u00e5et endda i de n\u00e6ste 30 dage. Under visse omst\u00e6ndigheder kan CAA-poster kontrolleres igen kort f\u00f8r udstedelsen af certifikatet; specifikt kr\u00e6ves det en gentagen CAA-kontrol inden for 8 timer f\u00f8r udstedelsen, s\u00e5 ethvert dom\u00e6ne, der er blevet kontrolleret tidligere inden denne frist, skal kontrolleres igen.<\/p>\n<p><\/p>\n<p>Hvad er fejlen? Hvis anmodningen om certifikatet indeholder N dom\u00e6ner, der kr\u00e6ver gentagen CAA-kontrol \u2014 valgte Boulder et af dem og kontrollerede det N gange. Som resultat var der mulighed for at udstede certifikatet, selvom der senere (indtil X+30 dage) blev oprettet en CAA-post, der forb\u00f8d udstedelsen af LetsEncrypt-certifikatet.<\/p>\n<p><\/p>\n<p>For at kontrollere certifikaterne har virksomheden forberedt <noindex><a rel=\"nofollow\" href=\"https:\/\/unboundtest.com\/caaproblem.html\">et onlinev\u00e6rkt\u00f8j<\/a><\/noindex>, som viser en detaljeret rapport.<\/p>\n<p><\/p>\n<p>Avancerede brugere kan g\u00f8re det hele selv ved at bruge f\u00f8lgende kommandoer:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\"># \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 https\nopenssl s_client -connect example.com:443 -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | openssl x509 -text -noout | grep -A 1 Serial Number | tr -d :\n# \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043e\u0442 @simpleadmin \necho | openssl s_client -connect example.com:443 |&amp; openssl x509 -noout -serial\n# \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b SMTP\nopenssl s_client -connect example.com:25 -starttls smtp -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | openssl x509 -text -noout | grep -A 1 Serial Number | tr -d :\n# \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b SMTP\nopenssl s_client -connect example.com:587 -starttls smtp -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | openssl x509 -text -noout | grep -A 1 Serial Number | tr -d :\n# \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b IMAP\nopenssl s_client -connect example.com:143 -starttls imap -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | openssl x509 -text -noout | grep -A 1 Serial Number | tr -d :\n# \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 \u043f\u043e\u0447\u0442\u043e\u0432\u043e\u0433\u043e \u0441\u0435\u0440\u0432\u0435\u0440\u0430, \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b IMAP\nopenssl s_client -connect example.com:993 -showcerts &lt;\/dev\/null 2&gt;\/dev\/null | openssl x509 -text -noout | grep -A 1 Serial Number | tr -d :\n# \u0432 \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u0435 \u0430\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u044e\u0442\u0441\u044f \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0441\u0435\u0440\u0432\u0438\u0441\u044b<\/code><\/pre>\n<p><\/p>\n<p>Derefter skal du se p\u00e5 <noindex><a rel=\"nofollow\" href=\"https:\/\/letsencrypt.org\/caaproblem\/\">her<\/a><\/noindex> dit serienummer, og hvis det er p\u00e5 listen \u2014 anbefales det at opdatere certifikatet(-erne).<\/p>\n<p><\/p>\n<p>For at opdatere certifikater kan du bruge certbot:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">certbot renew --force-renewal<\/code><\/pre>\n<p><\/p>\n<p>Problemet blev opdaget den 29. februar 2020, og for at l\u00f8se problemet blev udstedelsen af certifikater suspenderet fra 3:10 UTC til 5:22 UTC. If\u00f8lge en intern unders\u00f8gelse blev fejlen indf\u00f8rt den 25. juli 2019, og virksomheden vil senere give en mere detaljeret rapport.<\/p>\n<p><\/p>\n<p>UPD: Det online certifikat kontrolservice kan v\u00e6re utilg\u00e6ngeligt fra russiske IP-adresser.<\/p>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/southbridge\/blog\/490862\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f LetsEncrypt, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0430\u044f \u043a \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044e \u0431\u0435\u0441\u043f\u043b\u0430\u0442\u043d\u044b\u0435 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u044b ssl \u0434\u043b\u044f \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0432\u044b\u043d\u0443\u0436\u0434\u0435\u043d\u0430 \u0430\u043d\u043d\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u044b. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0439 \u043e\u0448\u0438\u0431\u043a\u043e\u0439 \u0432 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u043c \u041f\u041e Boulder, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u044f CA. \u041e\u0431\u044b\u0447\u043d\u043e \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 DNS \u0437\u0430\u043f\u0438\u0441\u0438 CAA \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0441 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435\u043c \u0432\u043b\u0430\u0434\u0435\u043d\u0438\u044f \u0434\u043e\u043c\u0435\u043d\u043e\u043c, \u0430 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u043f\u043e\u0434\u043f\u0438\u0441\u0447\u0438\u043a\u043e\u0432 \u043f\u043e\u043b\u0443\u0447\u0430\u044e\u0442 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442 \u0441\u0440\u0430\u0437\u0443 \u0436\u0435 \u043f\u043e\u0441\u043b\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438, \u043d\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u041f\u041e \u0441\u0434\u0435\u043b\u0430\u043b\u0438 \u0442\u0430\u043a, \u0447\u0442\u043e \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":72878,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-72877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/da\/blog\/administrirovanie\/letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" 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sine certifikater p\u00e5 grund af en softwarefejl | ProHoster","description":"Virksomhed.","canonical_url":"https:\/\/prohoster.info\/da\/blog\/administrirovanie\/letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki","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\udd47LetsEncrypt \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442 \u043e\u0442\u043e\u0437\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u0438 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u044b \u0438\u0437-\u0437\u0430 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