{"id":119766,"date":"2024-09-12T03:43:01","date_gmt":"2024-09-12T01:43:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/popytka-polucheniya-tls-sertifikatov-dlya-chuzhih-domenov-mobi-ispolzuya-prosrochennyj-domen-s-whois-servisom"},"modified":"2024-09-12T03:43:01","modified_gmt":"2024-09-12T01:43:01","slug":"popytka-polucheniya-tls-sertifikatov-dlya-chuzhih-domenov-mobi-ispolzuya-prosrochennyj-domen-s-whois-servisom","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/popytka-polucheniya-tls-sertifikatov-dlya-chuzhih-domenov-mobi-ispolzuya-prosrochennyj-domen-s-whois-servisom","title":{"rendered":"Poku\u0161aj dobivanja TLS certifikata za tu\u0111e domene mobi, koriste\u0107i istekao domen koji ima WHOIS uslugu","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Istra\u017eiva\u010di iz tvrtke watchTowr Labs objavili su rezultate eksperimenta sa snimanjem zastarjelog WHOIS servisa registra domene \u00ab.MOBI\u00bb. Povod za istra\u017eivanje bio je taj \u0161to je registar promijenio adresu WHOIS servisa, premjestiv\u0161i ga s domene whois.dotmobiregistry.net na novu adresu whois.nic.mobi. Pri tome je domena dotmobiregistry.net prestala s kori\u0161tenjem i u prosincu 2023. godine je oslobo\u0111ena te postala dostupna za registraciju. <\/p>\n

Istra\u017eiva\u010di su potro\u0161li 20 dolara i kupili ovu domenu, nakon \u010dega su na svom serveru pokrenuli svoj vlastiti la\u017eni WHOIS servis whois.dotmobiregistry.net. Iznena\u0111enje je izazvalo to \u0161to mnogi sustavi nisu pre\u0161li na novi host whois.nic.mobi nego su nastavili koristiti staro ime. Od 30. kolovoza do 4. rujna ove godine zabilje\u017eeno je 2,5 milijuna upita po starom imenu, poslanih s vi\u0161e od 135 tisu\u0107a jedinstvenih sustava. <\/p>\n

Me\u0111u po\u0161iljateljima upita bile su po\u0161tanske servere<\/a> dr\u017eavne i vojne organizacije, koje su provjeravale u emailu navedene domene putem WHOIS-a, kompanije specijalizirane za sigurnost i platforme za pru\u017eanje sigurnosti (VirusTotal, Group-IB), kao i certifikacijski centri, servisi za provjeru domena, SEO servisi i registrari domena (npr., domain.com, godaddy.com, who.is, whois.ru, smallseo.tools, seocheki.net, centralops.net, name.com, urlscan.io i webchart.org). <\/p>\n

Mogu\u0107nost slanja bilo kakvih podataka kao odgovor na upit starom WHOIS servisu domene \u00ab.MOBI\u00bb kori\u0161tena je za razvoj nekoliko vrsta napada na po\u0161iljatelje upita. Prva vrsta napada se temeljila na pretpostavci da, ako netko nastavlja slati upite zastarjelom servisu, vjerojatno to \u010dini koriste\u0107i zastarjeli alat koji sadr\u017ei sigurnosne ranjivosti. <\/p>\n

Na primjer, u phpWHOIS-u je 2015. godine otkrivena ranjivost CVE-2015-5243 koja omogu\u0107ava izvr\u0161enje napada\u010deve koda prilikom obrade posebno oblikovanih podataka koje vra\u0107a WHOIS server. Drugi primjer je ranjivost CVE-2021-32749 otkrivena 2021. godine u paketu Fail2Ban, koja omogu\u0107ava izvr\u0161enje vanjskog koda prilikom vra\u0107anja nepravilnih podataka WHOIS servisom kori\u0161tenim u procesu formiranja upozorenja o blokadi (Fail2Ban je utvr\u0111ivao preko WHOIS-a email administratora hosta i navodio ga prilikom pokretanja komande mail bez odgovaraju\u0107eg escapiranja specijalnih znakova). <\/p>\n

Druga vrsta napada temelji se na tome da neki certifikacijski centri omogu\u0107uju verifikaciju vlasni\u0161tva domene putem emaila navedenog u bazi registra domene dostupnoj preko WHOIS protokola. Ispostavilo se da nekoliko certifikacijskih centara koji podr\u017eavaju ovu metodu provjere i dalje koristi stari WHOIS server za domenu \u00ab.MOBI\u00bb. <\/p>\n

Dakle, sticanjem kontrole nad imenom whois.dotmobiregistry.net, napada\u010di mogu vratiti svoje podatke, izvr\u0161iti potvrdu i dobiti TLS certifikat<\/a> za bilo koju domenu u zoni .MOBI. Na primjer, tijekom eksperimenta istra\u017eiva\u010di su od registra GlobalSign zatra\u017eili TLS certifikat za domenu microsoft.mobi, a la\u017eni WHOIS servis vratio je email \u00abwhois@watchTowr.com\u00bb koji je prikazan u su\u010delju kao dostupan za slanje koda potvrde vlasni\u0161tva nad domenom.

\"Poku\u0161aj<\/center>
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 watchTowr Labs \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u044d\u043a\u0441\u043f\u0435\u0440\u0438\u043c\u0435\u043d\u0442\u0430 \u0441 \u0437\u0430\u0445\u0432\u0430\u0442\u043e\u043c \u0443\u0441\u0442\u0430\u0440\u0435\u0432\u0448\u0435\u0433\u043e WHOIS-\u0441\u0435\u0440\u0432\u0438\u0441\u0430 \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 \u0434\u043e\u043c\u0435\u043d\u043d\u043e\u0439 \u0437\u043e\u043d\u044b «.MOBI». \u041f\u043e\u0432\u043e\u0434\u043e\u043c \u0434\u043b\u044f \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e\u0441\u043b\u0443\u0436\u0438\u043b\u043e \u0442\u043e, \u0447\u0442\u043e \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 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