{"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\/sq\/blog\/news\/rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range","title":{"rendered":"RangeAmp \u2014 nj\u00eb seri sulmesh ndaj CDN, q\u00eb manipulojn\u00eb me header-in HTTP t\u00eb Range","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Nj\u00eb grup hulumtuesish nga Universiteti i Pekinit, Universiteti Tsinghua dhe Universitete Texas n\u00eb Dallas identifikoi<\/a><\/noindex> klasa e re e sulmeve DoS - RangeAmp, e bazuar n\u00eb p\u00ebrdorimin e header-it HTTP Range<\/a><\/noindex> p\u00ebr t\u00eb organizuar p\u00ebrforcimin e trafikut p\u00ebrmes rrjeteve t\u00eb shp\u00ebrndarjes s\u00eb p\u00ebrmbajtjes (CDN). Esenca e metod\u00ebs \u00ebsht\u00eb se p\u00ebr shkak t\u00eb ve\u00e7orive t\u00eb p\u00ebrpunimit t\u00eb header-eve Range n\u00eb shum\u00eb CDN, sulmuesi mund t\u00eb k\u00ebrkoj\u00eb p\u00ebrmes CDN nj\u00eb byt nga nj\u00eb skedar i madh, por CDN do t\u00eb ngarkoj\u00eb nga serveri i synuar t\u00eb gjith\u00eb skedarin ose nj\u00eb bllok shum\u00eb m\u00eb t\u00eb madh t\u00eb dh\u00ebnash p\u00ebr ta vendosur n\u00eb cache. Grada e p\u00ebrforcimit t\u00eb trafikut gjat\u00eb nj\u00eb sulmi t\u00eb till\u00eb, n\u00eb p\u00ebrputhje me CDN, varion nga 724 deri n\u00eb 43330 her\u00eb, e cila mund t\u00eb p\u00ebrdoret p\u00ebr t\u00eb mbingarkuar trafikun e ardhsh\u00ebm t\u00eb CDN ose p\u00ebr t\u00eb reduktuar kapacitetin e kanalit t\u00eb fundit t\u00eb lidhjes me faqen e viktim\u00ebs.<\/p>\n

\"RangeAmp<\/center><\/p>\n

Header-i Range i jep klientit mund\u00ebsin\u00eb t\u00eb p\u00ebrcaktoj\u00eb nj\u00eb gam\u00eb pozitat n\u00eb skedarin q\u00eb duhet t\u00eb shkarkohet n\u00eb vend t\u00eb dor\u00ebzimit t\u00eb skedarit t\u00eb plot\u00eb. P\u00ebr shembull, klienti mund t\u00eb specifikoj\u00eb \u00abRange: bytes=0-1023\u00bb dhe serveri do t\u00eb d\u00ebrgoj\u00eb vet\u00ebm 1024 bajta t\u00eb par\u00eb t\u00eb t\u00eb dh\u00ebnave. Kjo mund\u00ebsi \u00ebsht\u00eb e k\u00ebrkuar gjat\u00eb shkarkimit t\u00eb skedareve t\u00eb m\u00ebdha - p\u00ebrdoruesi mund t\u00eb ndaloj\u00eb shkarkimin dhe m\u00eb pas ta vazhdoj\u00eb at\u00eb nga pozita ku e kishte nd\u00ebrprer\u00eb. Duke specifikuar \u00abbytes=0-0\u00bb, standardi parashikon dor\u00ebzimin e bajtit t\u00eb par\u00eb n\u00eb skedar, \u00abbytes=-1\u00bb - t\u00eb fundit, \u00abbytes=1-\u00bb - duke filluar nga bajti 1 dhe deri n\u00eb fund t\u00eb skedarit. Lejohet transmetimi i disa gamave n\u00eb nj\u00eb header, p\u00ebr shembull \u00abRange: bytes=0-1023,8192-10240\u00bb.<\/p>\n

Shtohet nj\u00eb variant i dyt\u00eb i sulmit, i fokusuar n\u00eb rritjen e ngarkes\u00ebs rrjetore duke d\u00ebrguar trafik p\u00ebrmes nj\u00eb CDN tjet\u00ebr, i cili p\u00ebrdoret si proxy (p\u00ebr shembull, kur Cloudflare vepron si frontend (FCDN) dhe Akamai si backend (BCDN)). Metoda i ngjan sulmit t\u00eb par\u00eb, por lokalizohet brenda rrjeteve CDN dhe mund\u00ebson rritjen e trafikut gjat\u00eb aksesit p\u00ebrmes CDN-ve t\u00eb tjera, duke rritur ngarkes\u00ebn n\u00eb infrastruktur\u00eb dhe duke ulur cil\u00ebsin\u00eb e sh\u00ebrbimit. <\/p>\n

Ideja \u00ebsht\u00eb se sulmuesi ekzekuton k\u00ebrkesa Range n\u00eb CDN p\u00ebr disa gam\u00eb, si \u00abbytes=0-,0-,0-\u2026\u00bb, \u00abbytes=1-,0-,0-\u2026\u00bb ose \u00abbytes=-1024,0-,0-\u2026\u00bb. K\u00ebto k\u00ebrkesa p\u00ebrmbajn\u00eb nj\u00eb num\u00ebr t\u00eb madh gamash \u00ab0-\u00bb, duke n\u00ebnkuptuar dor\u00ebzimin e skedarit nga pozita zero deri n\u00eb fund. P\u00ebr shkak t\u00eb nj\u00eb zbatimi t\u00eb pap\u00ebrshtatsh\u00ebm t\u00eb analiz\u00ebs s\u00eb gamave gjat\u00eb k\u00ebrkes\u00ebs s\u00eb par\u00eb CDN n\u00eb t\u00eb dytin, p\u00ebr secil\u00ebn gam\u00eb \u00ab0-\u00bb d\u00ebrgohet skedari i plot\u00eb (gamet nuk mblidhen, por p\u00ebrzgjidhen n\u00eb radh\u00eb), n\u00ebse n\u00eb k\u00ebrkes\u00ebn e d\u00ebrguar fillimisht nga sulmuesi ka p\u00ebrs\u00ebritje dhe mbivendosje gamash. Shkalla e forcimit t\u00eb trafikut n\u00eb nj\u00eb sulm t\u00eb till\u00eb varion nga 53 deri n\u00eb 7432 her\u00eb.<\/p>\n

\"RangeAmp<\/center><\/p>\n

Gjat\u00eb k\u00ebrkimit u studua sjellja e 13 CDN -
\nAkamai, Alibaba Cloud, Azure, CDN77, CDNsun, Cloudflare, CloudFront, Fastly, G-Core Labs, Huawei Cloud, KeyCDN, StackPath dhe Tencent Cloud. T\u00eb gjith\u00eb CDN e shqyrtuar lejuan llojin e par\u00eb t\u00eb sulmit ndaj serverit p\u00ebrfundimtar. Varianti i dyt\u00eb i sulmit ndaj CDN i ishte n\u00ebnshtruar 6 sh\u00ebrbimeve, nga t\u00eb cilat kat\u00ebr mund t\u00eb veprojn\u00eb n\u00eb sulm si front-end (CDN77, CDNsun, Cloudflare dhe StackPath) dhe tri si back-end (Akamai, Azure dhe StackPath). Forcimi m\u00eb i madh arrihet n\u00eb Akamai dhe StackPath, t\u00eb cilat lejojn\u00eb caktimin n\u00eb headerin Range t\u00eb m\u00eb shum\u00eb se 10,000 rangesh. Pronar\u00ebt e CDN u njoftuan p\u00ebr vulnerabilitetet rreth 7 muaj m\u00eb par\u00eb dhe deri n\u00eb momentin e zbuluar publikisht, 12 nga 13 CDN kishin eliminuar problemet e identifikuara ose kishin shprehur gatishm\u00ebrin\u00eb p\u00ebr t'i eliminuar (vet\u00ebm sh\u00ebrbimi StackPath nuk u p\u00ebrgjigj).<\/p>\n

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

Burimi: 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 \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 — 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 […]<\/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\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\udd47RangeAmp \u2014 nj\u00eb seri sulmesh ndaj CDN, q\u00eb manipulojn\u00eb headerin HTTP Range | ProHoster","description":"Nj\u00eb grup studiuesish nga Universiteti i Pekinit, Universiteti Tsinghua dhe Universiteti i Teksasit n\u00eb Dallas","canonical_url":"https:\/\/prohoster.info\/sq\/blog\/news\/rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sq_AL","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\udd47RangeAmp \u2014 \u0441\u0435\u0440\u0438\u044f \u0430\u0442\u0430\u043a \u043d\u0430 CDN, \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u0443\u044e\u0449\u0430\u044f HTTP-\u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u043c Range | 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 \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","og:url":"https:\/\/prohoster.info\/sq\/blog\/news\/rangeamp-seriya-atak-na-cdn-manipuliruyushhaya-http-zagolovkom-range","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":"2020-05-26T17:42:01+00:00","article:modified_time":"2020-05-26T17:42:01+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"82929","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":null,"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":"2021-02-28 15:28:37","updated":"2022-10-02 22:54:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/82929","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/comments?post=82929"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/posts\/82929\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/media\/82930"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/media?parent=82929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/categories?post=82929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sq\/wp-json\/wp\/v2\/tags?post=82929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}