{"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\/cs\/blog\/administrirovanie\/letsencrypt-planiruet-otozvat-svoi-sertifikaty-iz-za-programmnoj-oshibki","title":{"rendered":"LetsEncrypt pl\u00e1nuje odvolat sv\u00e9 certifik\u00e1ty kv\u016fli softwarov\u00e9 chyb\u011b","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\"LetsEncrypt
\nSpole\u010dnost LetsEncrypt, kter\u00e1 nab\u00edz\u00ed k pou\u017eit\u00ed bezplatn\u00e9 ssl certifik\u00e1ty pro \u0161ifrov\u00e1n\u00ed, je nucena zru\u0161it n\u011bkter\u00e9 certifik\u00e1ty.<\/p>\n

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

Probl\u00e9m souvis\u00ed s softwarovou chybou<\/a><\/noindex> v \u0159\u00eddic\u00edm softwaru Boulder, pou\u017e\u00edvan\u00e9m k vytvo\u0159en\u00ed CA. Obvykle se kontrola DNS z\u00e1znamu CAA prov\u00e1d\u00ed sou\u010dasn\u011b s potvrzen\u00edm vlastnictv\u00ed dom\u00e9ny, a v\u011bt\u0161ina \u017eadatel\u016f obdr\u017e\u00ed certifik\u00e1t ihned po kontrole, ale v\u00fdvoj\u00e1\u0159i softwaru to nastavili tak, \u017ee v\u00fdsledek kontroly je pova\u017eov\u00e1n za \u00fasp\u011b\u0161n\u00fd je\u0161t\u011b b\u011bhem n\u00e1sleduj\u00edc\u00edch 30 dn\u016f. V n\u011bkter\u00fdch p\u0159\u00edpadech je mo\u017en\u00e9 kontrolovat z\u00e1znamy podruh\u00e9, t\u011bsn\u011b p\u0159ed vyd\u00e1n\u00edm certifik\u00e1tu, zejm\u00e9na je vy\u017eadov\u00e1na opakovan\u00e1 kontrola CAA b\u011bhem 8 hodin p\u0159ed vyd\u00e1n\u00edm, proto jak\u00e1koli dom\u00e9na, kter\u00e1 byla ov\u011b\u0159ena p\u0159ed touto lh\u016ftou, mus\u00ed b\u00fdt zkontrolov\u00e1na znovu.<\/p>\n

<\/p>\n

V \u010dem je tedy chyba? Pokud \u017e\u00e1dost o certifik\u00e1t obsahuje N dom\u00e9n, kter\u00e9 vy\u017eaduj\u00ed opakovanou kontrolu CAA - Boulder vybral jednu z nich a kontroloval ji Nkr\u00e1t. V\u00fdsledkem byl mo\u017enost vyd\u00e1n\u00ed certifik\u00e1tu, i kdy\u017e pozd\u011bji (do X+30 dn\u016f) byla nastavena CAA z\u00e1znam, kter\u00fd zakazuje vyd\u00e1n\u00ed certifik\u00e1tu LetsEncrypt.<\/p>\n

<\/p>\n

Pro kontrolu certifik\u00e1t\u016f spole\u010dnost p\u0159ipravila online n\u00e1stroj<\/a><\/noindex>, kter\u00fd uk\u00e1\u017ee podrobnou zpr\u00e1vu.<\/p>\n

<\/p>\n

Pokro\u010dil\u00ed u\u017eivatel\u00e9 si mohou v\u0161e ud\u011blat sami, pomoc\u00ed n\u00e1sleduj\u00edc\u00edch p\u0159\u00edkaz\u016f:<\/p>\n

<\/p>\n

# \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0430 https\nopenssl s_client -connect example.com:443 -showcerts <\/dev\/null 2>\/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 |& 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 <\/dev\/null 2>\/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 <\/dev\/null 2>\/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 <\/dev\/null 2>\/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 <\/dev\/null 2>\/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>\n
D\u00e1le je t\u0159eba sledovat zde<\/a><\/noindex> sv\u00e9 s\u00e9riov\u00e9 \u010d\u00edslo, a pokud je v seznamu - doporu\u010duje se aktualizovat certifik\u00e1t(y).<\/p>\n
<\/p>\n
Pro aktualizaci certifik\u00e1t\u016f lze vyu\u017e\u00edt certbot:<\/p>\n
<\/p>\n
certbot renew --force-renewal<\/code><\/pre>\n
<\/p>\n
Probl\u00e9m byl nalezen je\u0161t\u011b 29. \u00fanora 2020, kv\u016fli jeho vy\u0159e\u0161en\u00ed byl pozastaven vyd\u00e1n\u00ed certifik\u00e1t\u016f od 3:10 UTC do 5:22 UTC. Podle intern\u00edho vy\u0161et\u0159ov\u00e1n\u00ed byla chyba zaznamen\u00e1na 25. \u010dervence 2019, podrobn\u011bj\u0161\u00ed zpr\u00e1vu spole\u010dnost poskytne pozd\u011bji.<\/p>\n
<\/p>\n
UPD: online slu\u017eba pro kontrolu certifik\u00e1t\u016f nemus\u00ed fungovat z rusk\u00fdch IP adres.<\/p>\n
Zdroj: habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"
\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 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