{"id":82929,"date":"2020-05-26T19:42:01","date_gmt":"2020-05-26T17:42:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range"},"modified":"2020-05-26T19:42:01","modified_gmt":"2020-05-26T17:42:01","slug":"rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range","title":{"rendered":"RangeAmp \u2014 en serie attacker mot CDN som manipulerar HTTP-rubriken Range","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>En grupp forskare fr\u00e5n Pekinguniversitetet, Tsinghua-universitetet och University of Texas i Dallas <noindex><a rel=\"nofollow\" href=\"https:\/\/www.liubaojun.org\/uploads\/1\/1\/8\/3\/118316462\/dsn_2020.pdf\">har identifierat<\/a><\/noindex> \u043d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 DoS-\u0430\u0442\u0430\u043a &#8212; RangeAmp, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430 <noindex><a rel=\"nofollow\" href=\"https:\/\/tools.ietf.org\/html\/rfc7233\">Range<\/a><\/noindex> f\u00f6r att organisera trafikf\u00f6rst\u00e4rkning genom inneh\u00e5llsleveransn\u00e4tverk (CDN). Metoden g\u00e5r ut p\u00e5 att p\u00e5 grund av hur Range-huvuden hanteras av m\u00e5nga CDN kan angriparen beg\u00e4ra en byte fr\u00e5n en stor fil genom CDN, men CDN kommer att h\u00e4mta hela filen eller en betydligt st\u00f6rre datam\u00e4ngd fr\u00e5n m\u00e5lservern f\u00f6r att lagra det i cache. Grad av trafikf\u00f6rst\u00e4rkning vid en s\u00e5dan attack varierar beroende p\u00e5 CDN fr\u00e5n 724 upp till 43330 g\u00e5nger, vilket kan anv\u00e4ndas f\u00f6r att \u00f6verbelasta ing\u00e5ende trafik till CDN eller minska kapaciteten p\u00e5 den slutliga kommunikationskanalen till m\u00e5let.<\/p>\n<p><center><img decoding=\"async\" alt=\"RangeAmp - en serie attacker mot CDN, som manipulerar HTTP-huvudet Range\" src=\"\/wp-content\/uploads\/2020\/05\/45a7b48e01885f8ae50c3549e3293b12.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>\u0417\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a Range \u0434\u0430\u0451\u0442 \u043a\u043b\u0438\u0435\u043d\u0442\u0443 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d \u043f\u043e\u0437\u0438\u0446\u0438\u0439 \u0432 \u0444\u0430\u0439\u043b\u0435, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u0432\u043c\u0435\u0441\u0442\u043e \u043e\u0442\u0434\u0430\u0447\u0438 \u043f\u043e\u043b\u043d\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043b\u0438\u0435\u043d\u0442 \u043c\u043e\u0436\u0435\u0442 \u0443\u043a\u0430\u0437\u0430\u0442\u044c &#171;Range: bytes=0-1023&#187; \u0438 \u0441\u0435\u0440\u0432\u0435\u0440 \u043f\u0435\u0440\u0435\u0434\u0430\u0441\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0435\u0440\u0432\u044b\u0435 1024 \u0431\u0430\u0439\u0442\u0430 \u0434\u0430\u043d\u043d\u044b\u0445. \u041f\u043e\u0434\u043e\u0431\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u043e\u0441\u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0430 \u043f\u0440\u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0435 \u0431\u043e\u043b\u044c\u0448\u0438\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 &#8212; \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0443, \u0430 \u043f\u043e\u0442\u043e\u043c \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u0442\u044c \u0435\u0433\u043e \u0441 \u043f\u0440\u0435\u0440\u0432\u0430\u043d\u043d\u043e\u0439 \u043f\u043e\u0437\u0438\u0446\u0438\u0438. \u041f\u0440\u0438 \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u0438 &#171;bytes=0-0&#187;  \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442 \u043f\u0440\u0435\u0434\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442 \u043e\u0442\u0434\u0430\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0432\u044b\u0439 \u0431\u0430\u0439\u0442 \u0432 \u0444\u0430\u0439\u043b\u0435, &#171;bytes=-1&#187; &#8212; \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0438\u0439,  &#171;bytes=1-&#187; &#8212; \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 1 \u0431\u0430\u0439\u0442\u0430 \u0438 \u0434\u043e \u043a\u043e\u043d\u0446\u0430 \u0444\u0430\u0439\u043b\u0430. \u0414\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u0432 \u0432 \u043e\u0434\u043d\u043e\u043c \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0435, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 &#171;Range: bytes=0-1023,8192-10240&#187;.<\/p>\n<p>\u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u0432\u0442\u043e\u0440\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0430\u0442\u0430\u043a\u0438, \u043d\u0430\u0446\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u043d\u0430 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u0435 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u043f\u0440\u0438 \u043f\u0440\u043e\u0431\u0440\u043e\u0441\u0435 \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0447\u0435\u0440\u0435\u0437 \u0435\u0449\u0451 \u043e\u0434\u0438\u043d CDN, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043f\u0440\u043e\u043a\u0441\u0438 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043e\u0433\u0434\u0430 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0444\u0440\u043e\u043d\u0442\u044d\u043d\u0434\u0430 (FCDN) \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0435\u0442  Cloudflare, \u0430 \u0431\u044d\u043a\u0435\u043d\u0434\u0430 (BCDN) &#8212; Akamai). \u041c\u0435\u0442\u043e\u0434 \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u043f\u0435\u0440\u0432\u0443\u044e \u0430\u0442\u0430\u043a\u0443, \u043d\u043e \u043b\u043e\u043a\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0432\u043d\u0443\u0442\u0440\u0438 CDN-\u0441\u0435\u0442\u0435\u0439 \u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0441\u0438\u043b\u0438\u0442\u044c \u0442\u0440\u0430\u0444\u0438\u043a \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0438 \u0447\u0435\u0440\u0435\u0437 \u0434\u0440\u0443\u0433\u0438\u0435 CDN, \u043f\u043e\u0432\u044b\u0441\u0438\u0432 \u043d\u0430\u0433\u0440\u0443\u0437\u043a\u0443 \u043d\u0430 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443 \u0438 \u0441\u043d\u0438\u0437\u0438\u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u043e \u0441\u0435\u0440\u0432\u0438\u0441\u0430.  <\/p>\n<p>\u0418\u0434\u0435\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u044f\u0435\u0442 \u0432 CDN Range-\u0437\u0430\u043f\u0440\u043e\u0441\u044b \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u0432, \u0442\u0430\u043a\u0438\u0435 \u043a\u0430\u043a &#171;bytes=0-,0-,0-&#8230;&#187;, &#171;bytes=1-,0-,0-&#8230;&#187; \u0438\u043b\u0438 &#171;bytes=-1024,0-,0-&#8230;&#187;. \u0417\u0430\u043f\u0440\u043e\u0441\u044b \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442 \u0431\u043e\u043b\u044c\u0448\u043e\u0435 \u0447\u0438\u0441\u043b\u043e \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u0432 &#171;0-&#171;, \u043f\u043e\u0434\u0440\u0430\u0437\u0443\u043c\u0435\u0432\u0430\u044e\u0449\u0438\u0445 \u043e\u0442\u0434\u0430\u0447\u0443 \u0444\u0430\u0439\u043b\u0430 \u043e\u0442 \u043d\u0443\u043b\u0435\u0432\u043e\u0439 \u043f\u043e\u0437\u0438\u0446\u0438\u0438 \u0434\u043e \u043a\u043e\u043d\u0446\u0430. \u0418\u0437-\u0437\u0430 \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0440\u0430\u0437\u0431\u043e\u0440\u0430 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u0432 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0438  \u043f\u0435\u0440\u0432\u043e\u0433\u043e CDN \u043a\u043e \u0432\u0442\u043e\u0440\u043e\u043c\u0443, \u043d\u0430 \u043a\u0430\u0436\u0434\u044b\u0439 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d &#171;0-&#187; \u043e\u0442\u0434\u0430\u0451\u0442\u0441\u044f \u043f\u043e\u043b\u043d\u044b\u0439 \u0444\u0430\u0439\u043b (\u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u044b \u043d\u0435 \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u0443\u044e\u0442\u0441\u044f, \u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u043f\u0435\u0440\u0435\u0431\u0438\u0440\u0430\u044e\u0442\u0441\u044f), \u0435\u0441\u043b\u0438 \u0432 \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u043e\u0442\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u043d\u043e\u043c \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c \u0437\u0430\u043f\u0440\u043e\u0441\u0435 \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0434\u0443\u0431\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0438 \u043f\u0435\u0440\u0435\u0441\u0435\u0447\u0435\u043d\u0438\u0435 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d\u043e\u0432. \u0421\u0442\u0435\u043f\u0435\u043d\u044c \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0432 \u0442\u0430\u043a\u043e\u0439 \u0430\u0442\u0430\u043a\u0435 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043e\u0442 53 \u0434\u043e 7432 \u0440\u0430\u0437.<\/p>\n<p><center><img decoding=\"async\" alt=\"RangeAmp - en serie attacker mot CDN, som manipulerar HTTP-huvudet Range\" src=\"\/wp-content\/uploads\/2020\/05\/981161394221a0548a04ec5961081c27.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>\u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u044b\u043b\u043e \u0438\u0437\u0443\u0447\u0435\u043d\u043e \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435  13 CDN &#8212;<br \/>\nAkamai, Alibaba Cloud, Azure, CDN77, CDNsun, Cloudflare, CloudFront, Fastly, G-Core Labs, Huawei Cloud, KeyCDN, StackPath och Tencent Cloud. Alla de granskade CDN till\u00e4t den f\u00f6rsta typen av attack p\u00e5 den slutgiltiga servern. Den andra typen av attack p\u00e5 CDN utsattes 6 tj\u00e4nster f\u00f6r, varav fyra kan agera som frontend i attacken (CDN77, CDNsun, Cloudflare och StackPath) och tre som backend (Akamai, Azure och StackPath). Den st\u00f6rsta f\u00f6rst\u00e4rkningen uppn\u00e5s i Akamai och StackPath, som till\u00e5ter mer \u00e4n 10 000 omr\u00e5den att anges i Range-huvudet. \u00c4garna av CDN blev meddelade om s\u00e5rbarheterna f\u00f6r cirka 7 m\u00e5nader sedan, och vid tidpunkten f\u00f6r offentligg\u00f6randet hade 12 av 13 CDN \u00e5tg\u00e4rdat de p\u00e5visade problemen eller uttryckt beredskap att \u00e5tg\u00e4rda dem (endast tj\u00e4nsten StackPath hade inte reagerat).<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>K\u00e4lla: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53026\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u041f\u0435\u043a\u0438\u043d\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430, \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0426\u0438\u043d\u0445\u0443\u0430 \u0438 \u0422\u0435\u0445\u0430\u0441\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0432 \u0414\u0430\u043b\u043b\u0430\u0441\u0435 \u0432\u044b\u044f\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u043a\u043b\u0430\u0441\u0441 DoS-\u0430\u0442\u0430\u043a &#8212; RangeAmp, \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043d\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u0430 Range \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0443\u0441\u0438\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u0430 \u0447\u0435\u0440\u0435\u0437 \u0441\u0435\u0442\u0438 \u0434\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 (CDN). \u0421\u0443\u0442\u044c \u043c\u0435\u0442\u043e\u0434\u0430 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0438\u0437-\u0437\u0430 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 Range-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432 \u0432\u043e \u043c\u043d\u043e\u0433\u0438\u0445 CDN \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u0438\u0442\u044c \u0447\u0435\u0440\u0435\u0437 CDN \u043e\u0434\u0438\u043d \u0431\u0430\u0439\u0442 \u0438\u0437 \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u0430, \u043d\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":82930,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-82929","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0413\u0440\u0443\u043f\u043f\u0430 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0438\u0437 \u041f\u0435\u043a\u0438\u043d\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430, \u0423\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 \u0426\u0438\u043d\u0445\u0443\u0430 \u0438 \u0422\u0435\u0445\u0430\u0441\u0441\u043a\u043e\u0433\u043e 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