{"id":123627,"date":"2025-04-22T09:05:07","date_gmt":"2025-04-22T07:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-udostoveryayushhem-czentre-ssl-com-pozvolyavshaya-poluchit-sertifikat-dlya-chuzhogo-domena"},"modified":"2025-04-22T09:05:07","modified_gmt":"2025-04-22T07:05:07","slug":"uyazvimost-v-udostoveryayushhem-czentre-ssl-com-pozvolyavshaya-poluchit-sertifikat-dlya-chuzhogo-domena","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-udostoveryayushhem-czentre-ssl-com-pozvolyavshaya-poluchit-sertifikat-dlya-chuzhogo-domena","title":{"rendered":"SSL.com sertifitseerimiskeskuse haavatavus, mis v\u00f5imaldas saada sertifikaadi v\u00f5\u00f5ra domeeni jaoks.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

SSL.com-i kinnituskeskuses tuvastati haavatavus domeeniomandi kontrolli s\u00fcsteemis, mis v\u00f5imaldas saada TLS-sertifikaati igasuguste domeenide jaoks, kui r\u00fcndaja esitas e-kirja. TLS-sertifikaadi saamiseks oli piisav ligip\u00e4\u00e4s sihitud domeenile kuuluvasse e-kirja. N\u00e4iteks lubas haavatavus saada TLS-sertifikaati domeenide jaoks, mida kasutavad avalikud e-posti teenused, nagu gmail.com, yandex.ru, yahoo.com, outlook.com ja icloud.com. <\/p>\n

Haavatavus andis ka kurjategijatele v\u00f5imaluse viia l\u00e4bi sihitud r\u00fcnnakuid tuntud ettev\u00f5tete t\u00f6\u00f6tajate ja suurte projektide osalejate vastu, et saada juurdep\u00e4\u00e4s nende e-kirjadele ja saada TLS-sertifikaate tuntud of domains<\/a>. N\u00e4iteks Google'i t\u00f6\u00f6taja h\u00e4kkimine, kellel on e-kiri name@google.com, v\u00f5imaldas saada sertifikaadi domeeni jaoks<\/a> google.com. <\/p>\n

Haavatavus tulenes viga domeeni omandi kinnitamise s\u00fcsteemi rakenduses, kus kasutas e-posti kinnitust. Kinnituse saamiseks tuleb lisada domeeni DNS tsooni, mille jaoks sertifikaati taotletakse, DNS TXT kirje \u201e_validation-contactemail\u201c. N\u00e4iteks: \u201e_validation-contactemail.test.com DNS TXT name@example.com\u201c. Domeeni kontrollimise algatamisel saadetakse e-postile name@example.com kinnituskood, mille sisestamine t\u00f5endab domeeni \u201etest.com\u201c omandi\u00f5igust ja v\u00f5imaldab hankida TLS-sertifikaadi domeenile \u201etest.com\u201c. <\/p>\n

Haavatavuse olemus seisneb selles, et lisaks domeenile \u201etest.com\u201c, mille jaoks sertifikaati taotleti, m\u00e4\u00e4rati omandi kinnituse tunnus ka domeenile \u201eexample.com\u201c, mida kasutati e-posti aadressil. Probleemi avastanud teadlane demonstreeris t\u00f6\u00f6kindla TLS-sertifikaadi saamist domeeni aliyun.com jaoks, mida kasutati Hiina ettev\u00f5tte Alibaba webmail-teenuses. Testimise k\u00e4igus registreeris teadlane kontrolldomeeni \u201ed2b4eee07de5efcb8598f0586cbf2690.test.dcv-inspector.com\u201c teenuses \u201edcv-inspector.com\u201c ja taotles selle jaoks TLS-sertifikaati, lisades DNS-kirje: _validation-contactemail.d2b4eee07de5efcb8598f0586cbf2690.test.dcv-inspector.com DNS TXT myusername@aliyun.com <\/p>\n

P\u00e4rast seda taotles ta saidil SSL.com TLS-sertifikaati domeeni jaoks d2b4eee07de5efcb8598f0586cbf2690.test.dcv-inspector.com ja valis e-posti kinnituse. SSL.com sertifitseerimisasutus saatis kontrollkoodi aadressile myusername@aliyun.com ning p\u00e4rast selle koodi sisestamist lisas ta kinnitatud domeenide nimekirja mitte ainult \u201ed2b4eee07de5efcb8598f0586cbf2690.test.dcv-inspector.com\u201c, vaid ka \u201ealiyun.com\u201c. P\u00e4rast seda sai teadlane edukalt TLS-sertifikaadi domeeni \u201ealiyun.com\u201c jaoks, mille omandi\u00f5igus oli kinnitatud. <\/p>\n

Sertifitseerimiskeskus SSL.com k\u00f5rvaldas probleemi ja tuvastas 11 sertifikaati, mille v\u00e4ljastamisel kasutati haavatavat kontrollskeemi kolmanda osapoole domeeniga e-posti teel. Eeldatavasti puuduvad tuvastatud juhtudel t\u00e4hised kahjuliku tegevuse kohta ja 11-st on hetkel tagasi kutsutud ainult \u00fcks sertifikaat, mille uurija sai saidi aliyun.com jaoks. \u00dclej\u00e4\u00e4nud sertifikaatides esinesid domeenid medinet.ca, help.gurusoft.com.sg, banners.betvictor.com, production-boomi.3day.com, kisales.com ja medc.kisales.com. Incidenti aruanne kavatseb ettev\u00f5te SSL.com avaldada 2. maiks.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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TLS-sertifikaadi saamiseks oli piisav juurdep\u00e4\u00e4s sihitud domeeni meilikontole. N\u00e4iteks v\u00f5imaldas haavatavus hankida TLS-sertifikaadi domeenide jaoks, mida kasutati avalikes meilikeskkondades, nagu gmail.com, yandex.ru, yahoo.com, outlook.com ja icloud.com. 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