{"id":104644,"date":"2022-07-13T15:36:38","date_gmt":"2022-07-13T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/retbleed-novaya-ataka-na-mehanizm-spekulyativnogo-vypolneniya-cpu-intel-i-amd"},"modified":"2022-07-13T15:36:38","modified_gmt":"2022-07-13T13:36:38","slug":"retbleed-novaya-ataka-na-mehanizm-spekulyativnogo-vypolneniya-cpu-intel-i-amd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/retbleed-novaya-ataka-na-mehanizm-spekulyativnogo-vypolneniya-cpu-intel-i-amd","title":{"rendered":"Retbleed \u2014 nov\u00e1 \u00fatok na mechanizmus \u0161pekulat\u00edvneho vykon\u00e1vania procesorov Intel a AMD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Skupina v\u00fdskumn\u00edkov z \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne objavila nov\u00fd variant \u00fatoku na mechanizmus \u0161pekulat\u00edvneho vykon\u00e1vania nepriamych skokov v CPU, ktor\u00fd umo\u017e\u0148uje extrahova\u0165 inform\u00e1cie z pam\u00e4te jadra alebo vykona\u0165 \u00fatok na hostite\u013esk\u00fd syst\u00e9m z virtu\u00e1lnych strojov. Zranite\u013enosti dostali k\u00f3dov\u00e9 meno Retbleed (CVE-2022-29900, CVE-2022-29901) a s\u00fa bl\u00edzke \u00fatokom Spectre-v2. Rozdiel spo\u010d\u00edva v organiz\u00e1cii \u0161pekulat\u00edvneho vykon\u00e1vania \u013eubovo\u013en\u00e9ho k\u00f3du pri spracovan\u00ed in\u0161trukcie \u00abret\u00bb (return), ktor\u00e1 extrahuje adresu pre skok zo z\u00e1sobn\u00edka, namiesto nepriamych skokov pomocou in\u0161trukcie \u00abjmp\u00bb s na\u010d\u00edtan\u00edm adresy z pam\u00e4te alebo registra CPU. <\/p>\n

\u00dato\u010dn\u00edk m\u00f4\u017ee vytvori\u0165 podmienky pre nespr\u00e1vne predpovedanie skoku a zorganizova\u0165 cielene \u0161pekulat\u00edvny skok na blok k\u00f3du, ktor\u00fd nie je predpokladan\u00fd logikou vykon\u00e1vania programu. Nakoniec procesor zist\u00ed, \u017ee predpove\u010f vetvenia nebola spr\u00e1vna a vr\u00e1ti oper\u00e1ciu sp\u00e4\u0165 do p\u00f4vodn\u00e9ho stavu, ale spracovan\u00e9 d\u00e1ta po\u010das \u0161pekulat\u00edvneho vykon\u00e1vania zostan\u00fa v cache a mikroarchitektonick\u00fdch vyrovn\u00e1vac\u00edch pam\u00e4tiach. Ak chybne vykonan\u00fd blok vykon\u00e1va pr\u00edstup do pam\u00e4te, jeho \u0161pekulat\u00edvne vykon\u00e1vanie povedie k uchovaniu v spolo\u010dnej cache a \u00fadajov pre\u010d\u00edtan\u00fdch z pam\u00e4te. <\/p>\n

Na ur\u010denie \u00fadajov, ktor\u00e9 zostali v cache po \u0161pekulat\u00edvnom vykon\u00e1van\u00ed oper\u00e1ci\u00ed, m\u00f4\u017ee \u00fato\u010dn\u00edk vyu\u017ei\u0165 met\u00f3dy na zistenie zostatkov\u00fdch \u00fadajov cez bo\u010dn\u00e9 kan\u00e1ly, napr\u00edklad analyzova\u0165 zmeny v \u010dase pr\u00edstupu k pre-cacheovan\u00fdm a ne-cacheovan\u00fdm \u00fadajom. Na cie\u013eov\u00e9 extrahovanie inform\u00e1ci\u00ed z oblast\u00ed na inej \u00farovni privil\u00e9gi\u00ed (napr\u00edklad z pam\u00e4te jadra) sa pou\u017e\u00edvaj\u00fa \u00abgadgets\u00bb \u2014 pr\u00edtomn\u00e9 v jadre sekvencie pr\u00edkazov, vhodn\u00e9 na \u0161pekulat\u00edvne \u010d\u00edtanie \u00fadajov z pam\u00e4te v z\u00e1vislosti na vonkaj\u0161\u00edch podmienkach, na ktor\u00e9 m\u00f4\u017ee \u00fato\u010dn\u00edk vpl\u00fdva\u0165. <\/p>\n

Na ochranu pred klasick\u00fdmi \u00fatokmi triedy Spectre, v ktor\u00fdch sa pou\u017e\u00edvaj\u00fa in\u0161trukcie podmienen\u00e9ho a nepriam\u00e9ho skoku, sa vo v\u00e4\u010d\u0161ine opera\u010dn\u00fdch syst\u00e9mov uplat\u0148uje technika \u00abretpoline\u00bb, zalo\u017een\u00e1 na nahraden\u00ed oper\u00e1ci\u00ed nepriamych skokov in\u0161trukciou \u00abret\u00bb, pre ktor\u00fa v procesoroch existuje samostatn\u00e1 predik\u010dn\u00e1 jednotka stavu z\u00e1sobn\u00edka, ktor\u00e1 nepou\u017e\u00edva blok predikcie skokov. Pri zaveden\u00ed retpoline v roku 2018 sa predpokladalo, \u017ee manipul\u00e1cie s adresami porovnate\u013en\u00e9 so Spectre s\u00fa v praxi nepou\u017eite\u013en\u00e9 na \u0161pekulat\u00edvne skoky pomocou in\u0161trukcie \u00abret\u00bb. <\/p>\n

V\u00fdskumn\u00edci, ktor\u00ed vyvinuli met\u00f3du \u00fatoku Retbleed, demon\u0161trovali mo\u017enos\u0165 vytvorenia mikroarchitektonick\u00fdch podmienok na iniciovanie \u0161pekulat\u00edvneho skoku pomocou in\u0161trukcie \u00abret\u00bb a uverejnili hotov\u00fd n\u00e1stroj na identifik\u00e1ciu v jadre Linuxu vhodn\u00fdch pre vy\u0165a\u017eite\u013en\u00e9 zranite\u013enostn\u00e9 sekvencie in\u0161trukci\u00ed (gadgets), v ktor\u00fdch sa prejavuj\u00fa podobn\u00e9 podmienky. <\/p>\n

V priebehu v\u00fdskumu bol pripraven\u00fd funk\u010dn\u00fd exploit, ktor\u00fd umo\u017e\u0148uje na syst\u00e9moch s CPU Intel vy\u0165ahova\u0165 n\u00e1hodn\u00e9 d\u00e1ta z pam\u00e4te jadra so sekundovou r\u00fdchlos\u0165ou 219 bajtov a presnos\u0165ou 98 % z nepovolen\u00e9ho procesu v u\u017e\u00edvate\u013eskom priestore. Na procesoroch AMD je efektivita exploitu ove\u013ea vy\u0161\u0161ia \u2014 r\u00fdchlos\u0165 \u00faniku dosahuje 3,9 kB za sekundu. Ako praktick\u00fd pr\u00edklad je uk\u00e1zan\u00e9, ako pomocou navrhnut\u00e9ho exploitu ur\u010di\u0165 obsah s\u00faboru \/etc\/shadow. Na syst\u00e9moch s CPU Intel \u00fatok na ur\u010denie hash hesla pou\u017e\u00edvate\u013ea root prebiehal 28 min\u00fat, zatia\u013e \u010do na syst\u00e9moch s CPU AMD to bolo len 6 min\u00fat.

\r\n \"Prehrajte\r\n
<\/div>\r\n <\/div><\/center> <\/p>\n

Mo\u017enos\u0165 vykonania \u00fatoku je potvrden\u00e1 pre 6-8 gener\u00e1cie procesorov Intel, ktor\u00e9 boli vyroben\u00e9 do 3. \u0161tvr\u0165roka 2019 (vr\u00e1tane Skylake) a procesorov AMD na b\u00e1ze mikroarchitekt\u00far Zen 1, Zen 1+ a Zen 2, ktor\u00e9 boli vyroben\u00e9 do druh\u00e9ho kvart\u00e1lu 2021. V nov\u0161\u00edch modeloch procesorov, ako s\u00fa AMD Zen3 a Intel Alder Lake, ako aj v procesoroch ARM, je probl\u00e9m blokovan\u00fd existuj\u00facimi ochrann\u00fdmi mechanizmami. Napr\u00edklad pou\u017eitie in\u0161trukci\u00ed IBRS (Indirect Branch Restricted Speculation) pom\u00e1ha chr\u00e1ni\u0165 pred \u00fatokom. <\/p>\n

Pre jadro Linux a hyperv\u00edzor Xen bol pripraven\u00fd s\u00fabor zmien, ktor\u00fd na star\u0161\u00edch CPU blokuje probl\u00e9m programovo. Navrhnut\u00fd patch pre jadro Linux men\u00ed 68 s\u00faborov, prid\u00e1va 1783 riadkov a odstra\u0148uje 387 riadkov. Bohu\u017eia\u013e, ochrana vedie k v\u00fdznamn\u00fdm n\u00e1kladom - v uskuto\u010dnen\u00fdch testoch na procesoroch AMD a Intel bolo zn\u00ed\u017eenie v\u00fdkonu odhadovan\u00e9 od 14 % do 39 %. Preferovanej\u0161ie je pou\u017eitie ochrany zalo\u017eenej na pr\u00edkazoch IBRS, dostupn\u00fdch v nov\u0161\u00edch gener\u00e1ci\u00e1ch CPU Intel a podporovan\u00fdch od jadra Linux 4.19. <\/p>\n

Na procesoroch Intel je nastavenie adresy pre \u0161pekulat\u00edvny nepriamy skok realizovan\u00e9 v\u010faka vlastnosti, ktor\u00e1 sa prejavuje pri prete\u010den\u00ed zospodu (underflow) v predikt\u00edvnom z\u00e1sobn\u00edku obsahu z\u00e1sobn\u00edka (Return Stack Buffer). Pri vzniku tak\u00fdchto podmienok sa pre in\u0161trukciu \u201eret\u201c za\u010d\u00edna aplikova\u0165 logika vo\u013eby adresy, podobn\u00e1 tej, ktor\u00e1 sa pou\u017e\u00edva pri be\u017en\u00fdch nepriamych skokoch. V jadre Linux bolo n\u00e1jden\u00fdch viac ako tis\u00edc miest, ktor\u00e9 vytv\u00e1raj\u00fa podmienky na iniciovanie tak\u00e9hoto sp\u00e4tn\u00e9ho prete\u010denia a s\u00fa dostupn\u00e9 prostredn\u00edctvom syst\u00e9mov\u00fdch volan\u00ed. <\/p>\n

Na procesoroch AMD je \u0161pekulat\u00edvne vykon\u00e1vanie in\u0161trukcie \u201eret\u201c realizovan\u00e9 bez z\u00e1vislosti na \u0161pecifickom pre z\u00e1sobn\u00edk bufferi (Return Address Stack) a blok predikcie skokov pova\u017euje in\u0161trukciu \u201eret\u201c nie ako n\u00e1vrat riadenia, ale ako nepriamy skok, a preto pri predikcii pou\u017e\u00edva d\u00e1ta pre nepriam\u00e9 skoky. V tak\u00fdchto podmienkach m\u00f4\u017ee by\u0165 v podstate ak\u00e1ko\u013evek oper\u00e1cia \u201eret\u201c, dosiahnute\u013en\u00e1 prostredn\u00edctvom syst\u00e9mov\u00e9ho volania, vyu\u017eit\u00e1 na exploit\u00e1ciu. <\/p>\n

\u010eal\u0161ia probl\u00e9matika bola identifikovan\u00e1 aj v procesoroch AMD (CVE-2022-23825, Branch Type Confusion), t\u00fdkaj\u00faca sa vykon\u00e1vania falo\u0161n\u00fdch prechodov \u2014 podmienky na predpovedanie prechodu sa m\u00f4\u017eu vyskytn\u00fa\u0165 aj bez potrebn\u00fdch pokynov vetvenia, \u010do umo\u017e\u0148uje ovplyvni\u0165 vyrovn\u00e1vaciu pam\u00e4\u0165 prepredikcie prechodu bez in\u0161trukcie \u201eret\u201c. T\u00e1to vlastnos\u0165 zna\u010dne komplikuje realiz\u00e1ciu ochrany a vy\u017eaduje akt\u00edvnej\u0161ie \u010distenie vyrovn\u00e1vacej pam\u00e4te prepredikcie prechodu. O\u010dak\u00e1va sa, \u017ee zavedenie \u00faplnej ochrany do jadra povedie k zv\u00fd\u0161eniu re\u017eijn\u00fdch n\u00e1kladov o 209%.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u0428\u0432\u0435\u0439\u0446\u0430\u0440\u0441\u043a\u043e\u0439 \u0432\u044b\u0441\u0448\u0435\u0439 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0448\u043a\u043e\u043b\u044b \u0426\u044e\u0440\u0438\u0445\u0430 \u0432\u044b\u044f\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0441\u0432\u0435\u043d\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u043e\u0432 \u0432 CPU, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0438\u0437 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0430\u0442\u0430\u043a\u0443 \u043d\u0430 \u0445\u043e\u0441\u0442-\u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0438\u0437 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f Retbleed (CVE-2022-29900, CVE-2022-29901) \u0438 \u0431\u043b\u0438\u0437\u043a\u0438 \u043f\u043e \u0441\u0432\u043e\u0435\u0439 \u0441\u0443\u0442\u0438 \u043a \u0430\u0442\u0430\u043a\u0430\u043c Spectre-v2. \u041e\u0442\u043b\u0438\u0447\u0438\u0435 \u0441\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043a \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f […]<\/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-104644","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\udd47Retbleed \u2014 nov\u00fd \u00fatok na mechanizmus \u0161pekulat\u00edvneho vykon\u00e1vania CPU Intel a AMD | ProHoster","description":"Skupina v\u00fdskumn\u00edkov z \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne odhalila nov\u00fa variantu \u00fatoku na mechanizmus \u0161pekulat\u00edvneho vykon\u00e1vania nepriamych skokov v CPU, ktor\u00e1 umo\u017e\u0148uje extrahova\u0165 inform\u00e1cie z pam\u00e4te jadra.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/retbleed-novaya-ataka-na-mehanizm-spekulyativnogo-vypolneniya-cpu-intel-i-amd","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","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\udd47Retbleed \u2014 \u043d\u043e\u0432\u0430\u044f \u0430\u0442\u0430\u043a\u0430 \u043d\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f CPU Intel \u0438 AMD | ProHoster","og:description":"\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u0428\u0432\u0435\u0439\u0446\u0430\u0440\u0441\u043a\u043e\u0439 \u0432\u044b\u0441\u0448\u0435\u0439 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u043e\u0439 \u0448\u043a\u043e\u043b\u044b \u0426\u044e\u0440\u0438\u0445\u0430 \u0432\u044b\u044f\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c \u0441\u043f\u0435\u043a\u0443\u043b\u044f\u0442\u0438\u0432\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0441\u0432\u0435\u043d\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u043e\u0432 \u0432 CPU, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0438\u0437 \u043f\u0430\u043c\u044f\u0442\u0438 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/retbleed-novaya-ataka-na-mehanizm-spekulyativnogo-vypolneniya-cpu-intel-i-amd","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":"2022-07-13T13:36:38+00:00","article:modified_time":"2022-07-13T13:36:38+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"104644","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2022-07-13 13:37:02","updated":"2022-09-30 12:37:43","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/104644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=104644"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/104644\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=104644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=104644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=104644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}