{"id":84662,"date":"2020-06-10T01:42:15","date_gmt":"2020-06-09T23:42:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-upnp-podhodyashhaya-dlya-usileniya-ddos-atak-i-skanirovaniya-vnutrennej-seti"},"modified":"2020-06-10T01:42:15","modified_gmt":"2020-06-09T23:42:15","slug":"uyazvimost-v-upnp-podhodyashhaya-dlya-usileniya-ddos-atak-i-skanirovaniya-vnutrennej-seti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-upnp-podhodyashhaya-dlya-usileniya-ddos-atak-i-skanirovaniya-vnutrennej-seti","title":{"rendered":"UPnP haavatavus, mida saab kasutada DDoS-r\u00fcnnakute tugevdamiseks ja sisev\u00f5rgu skaneerimiseks","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Avalikustatud<\/a><\/noindex> teave haavatavusest<\/a><\/noindex> (CVE-2020-12695<\/a><\/noindex>) UPnP protokollis, mis v\u00f5imaldab suunata liiklust suvalisele saajale, kasutades standardis ette n\u00e4htud «SUBSCRIBE» toimingut. Haavatavusele on antud koodnimi CallStranger<\/a><\/noindex>. Haavatavust saab kasutada andmete v\u00e4ljav\u00f5tmiseks DLP-s\u00fcsteemidega kaitstud v\u00f5rkudest, portide skaneerimiseks arvutites sisev\u00f5rgus, samuti DDoS-r\u00fcnnakute tugevdamiseks miljonite globaalsete UPnP-seadmete abil, nagu kaabelmodemid, kodu ruuteri, m\u00e4ngukonsoolid, IP-kaamerad, TV-pulgad, meediakeskused ja printerid.<\/p>\n

Probleem p\u00f5hjustatud<\/a><\/noindex> selle t\u00f5ttu, et spetsifikatsioonis ette n\u00e4htud «SUBSCRIBE» funktsioon lubab igal v\u00e4lisel r\u00fcndajal saata HTTP-pakette koos Callback-pealkirjaga ja kasutada UPnP-seadet proksina, et edastada p\u00e4ringuid teistele hostidele. Funktsioon «SUBSCRIBE» on defineeritud UPnP spetsifikatsioonis ning seda kasutatakse muude seadmete ja teenuste muutuste j\u00e4lgimiseks. HTTP-pealkirja Callback abil saab m\u00e4\u00e4rata suvalise URL-i, kuhu seade \u00fcritab \u00fchendust luua. <\/p>\n

\"UPnP<\/a><\/noindex><\/center><\/p>\n

Probleem m\u00f5jutab peaaegu k\u00f5iki UPnP rakendusi, mis p\u00f5hinevad spetsifikatsioonis<\/a><\/noindex>, mis on v\u00e4lja antud enne 17. aprilli. Sealhulgas haavatavuse olemasolu on kinnitatud<\/a><\/noindex> avatud paketis hostapd<\/a><\/noindex> koos traadita juurdep\u00e4\u00e4supunktiga (WPS AP). Parandus on hetkel saadaval pat\u0161id<\/a><\/noindex>. Jaotustes pole uuendusi veel v\u00e4lja antud (Debian<\/a><\/noindex>, OpenWRT<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, SUSE<\/a><\/noindex>, Fedora<\/a><\/noindex>, Arch<\/a><\/noindex>). Probleem puudutab ka puudutab<\/a><\/noindex> lahendusi, mis p\u00f5hinevad avatud UPnP-stekil pupnp<\/a><\/noindex>, mille kohta puudub hetkel teave paranduste kohta.<\/p>\n

UPnP protokoll m\u00e4\u00e4ratleb mehhanismi seadmete automaatseks tuvastamiseks kohalikus v\u00f5rgus ja nendega suhtlemiseks. Protokoll on algselt kavandatud kasutamiseks sisev\u00f5rkudes ning ei m\u00e4\u00e4ra mingit autentimise ega kontrollimise vormi. Sellest hoolimata ei l\u00fclita miljonid seadmed UPnP toe v\u00e4listele v\u00f5rgu liidestele v\u00e4lja ja j\u00e4\u00e4vad k\u00e4ttesaadavaks<\/a><\/noindex> globaalsetest v\u00f5rgust tehtud p\u00e4ringute jaoks. R\u00fcnnak v\u00f5ib toimuda l\u00e4bi mistahes sarnase UPnP-seadme.
\nN\u00e4iteks v\u00f5ib Xbox One konsoole r\u00fcnnata l\u00e4bi v\u00f5rguporti 2869, kuna need v\u00f5imaldavad j\u00e4lgida SUBSCRIBE k\u00e4su kaudu selliseid muudatusi nagu sisu jagamine.<\/p>\n

Open Connectivity Foundation (OCF) organisatsioon sai probleemist teada eelmisel aastal, kuid alguses keeldusid nad seda kirjeldamast kui spetsiifilist haavatavust. P\u00e4rast uut, p\u00f5hjalikumat raportit tunnustati probleemi olemasolu ning spetsiifikasse lisati juhis kasutada UPnP ainult LAN-liidestel. Kuna probleem tuleneb standardi puuduj\u00e4\u00e4gist, v\u00f5ib haavatavuste parandamine eraldi seadmetes v\u00f5tta aega, ning vanade seadmete jaoks v\u00f5ib firmware uuendusi \u00fcldse mitte tulla.<\/p>\n

Kaitse ringk\u00e4ikudena soovitatakse isoleerida UPnP-seadmed v\u00e4listest p\u00e4ringutest tulem\u00fc\u00fcriga, blokeerida v\u00e4lised HTTP-p\u00e4ringud «SUBSCRIBE» ja «NOTIFY» r\u00fcnnaku ennetamise s\u00fcsteemides v\u00f5i keelata UPnP protokoll v\u00e4listes v\u00f5rgu liidestes. Tootjatele soovitatakse keelduda SUBSCRIBE funktsiooni lubamisest vaikeseadetes ja piirata selle sissel\u00fclitamist ainult siseriiklikest p\u00e4ringutest.
\nOma seadmete haavatavuse testimiseks avaldatud<\/a><\/noindex> on spetsiaalne t\u00f6\u00f6riist, mis on kirjutatud Pythonis ja levitatakse MIT litsentsi all. <\/p>\n

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

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

\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2020-12695) \u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0435 UPnP, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u0435\u043b\u044e, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u043f\u0440\u0435\u0434\u0443\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043d\u0443\u044e \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044e «SUBSCRIBE». \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f CallStranger. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0441\u0435\u0442\u0435\u0439, \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u043c\u0438 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0443\u0442\u0435\u0447\u0435\u043a \u0434\u0430\u043d\u043d\u044b\u0445 (DLP), \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e\u0440\u0442\u043e\u0432 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043e\u0432 \u0432\u043e \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0441\u0435\u0442\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f DDoS-\u0430\u0442\u0430\u043a \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u043e\u0432 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u044b\u0445 \u043a […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":84663,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-84662","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47UPnP haavatavus, mis sobib DDoS-r\u00fcnnakute suurendamiseks ja sisev\u00f5rgu skaneerimiseks | ProHoster","description":"Paljastatud teave haavatavuse (CVE-2020-12695) kohta UPnP protokollis, mis v\u00f5imaldab suunata liiklust juhuslikule vastuv\u00f5tjale, kasutades standardis ette n\u00e4htud 'SUBSCRIBE' operatsiooni. Haavatavusele on antud koodnimi CallStranger. Haavatavust saab kasutada andmete hankimiseks DLP-testidest sissetungimise v\u00e4ltimise s\u00fcsteemidega kaitstud v\u00f5rkudest, skaneerimise korraldamiseks sisev\u00f5rgus olevate arvutite portide ning DDoS-r\u00fcnnakute suurendamiseks miljonite \u00fchendatud seadmete kaudu.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/uyazvimost-v-upnp-podhodyashhaya-dlya-usileniya-ddos-atak-i-skanirovaniya-vnutrennej-seti","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 UPnP, \u043f\u043e\u0434\u0445\u043e\u0434\u044f\u0449\u0430\u044f \u0434\u043b\u044f \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f DDoS-\u0430\u0442\u0430\u043a \u0438 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0441\u0435\u0442\u0438 | ProHoster","og:description":"\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2020-12695) \u0432 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0435 UPnP, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u0435\u043b\u044e, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044f \u043f\u0440\u0435\u0434\u0443\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043d\u0443\u044e \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044e "SUBSCRIBE". \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f CallStranger. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0441\u0435\u0442\u0435\u0439, \u0437\u0430\u0449\u0438\u0449\u0451\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u043c\u0438 \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u0443\u0442\u0435\u0447\u0435\u043a \u0434\u0430\u043d\u043d\u044b\u0445 (DLP), \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u043a\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043e\u0440\u0442\u043e\u0432 \u043a\u043e\u043c\u043f\u044c\u044e\u0442\u0435\u0440\u043e\u0432 \u0432\u043e \u0432\u043d\u0443\u0442\u0440\u0435\u043d\u043d\u0435\u0439 \u0441\u0435\u0442\u0438, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f DDoS-\u0430\u0442\u0430\u043a \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043c\u0438\u043b\u043b\u0438\u043e\u043d\u043e\u0432 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u044b\u0445 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