{"id":121204,"date":"2025-01-02T09:46:09","date_gmt":"2025-01-02T07:46:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer"},"modified":"2025-01-02T09:46:09","modified_gmt":"2025-01-02T07:46:09","slug":"flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer","title":{"rendered":"FlippyRAM \u2014 testimiseks m\u00f5eldud Rowhammeri r\u00fcnnaku jaotumine","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Konverentsil 38C3 esitati FlippyRAM raamistik, mis on m\u00f5eldud Rowhammeri r\u00fcnnakute t\u00f5rgete tuvastamiseks, et kontrollida operatiivm\u00e4lu sisu muutumise v\u00f5imalikke haavatavusi. T\u00f6\u00f6riista kood on kirjutatud C++ keeles ja see on avatud allika litsentsiga MIT. Testimise lihtsustamiseks on loodud valmis live jaotumine (1 GB), mis v\u00f5imaldab testimist USB Flashilt k\u00e4ivitades, samuti Docker'i konteineri pilt. <\/p>\n

Projekti eesm\u00e4rk on kaasata kasutajaid uurimisse, mis p\u00fc\u00fcab koguda statistikat selle kohta, kui palju Rowhammeri klassi haavatavusi esineb laialdaselt kasutatavates s\u00fcsteemides. Testimise tulemused v\u00f5ivad olla saadetud nii laaditud jaotumisest kui ka k\u00e4sitsi lisatud uurimissaidile. <\/p>\n

Rowhammeri r\u00fcnnakumeetod t\u00f6\u00f6tati v\u00e4lja 10 aastat tagasi, millele j\u00e4rgnes turvaekspertide ja seadme tootjate vahel m\u00e4ng 'kass ja hiir' \u2014 m\u00e4lukiipide tootjad p\u00fc\u00fcdsid haavatavust blokeerida, samas kui uurijad leidsid uusi viise selle v\u00e4ltimiseks. Peale DDR3 kiipide Intel x86 s\u00fcsteemides on v\u00e4lja selgitatud r\u00fcnnakutehnikaid ka DDR4 ja DDR5 kiipide, AMD ja ARM protsessoritega s\u00fcsteemide, ECC vigade parandamise ringit\u00f5kestamise meetodite, samuti r\u00fcndetehnikaid, mis toimivad \u00fcle v\u00f5rgu ja JavaScript-koodi t\u00e4itmise kaudu brauseris. <\/p>\n

RowHammeri r\u00fcnnak v\u00f5imaldab moonutada DRAM m\u00e4lurakkude \u00fcksikute bitide sisu, lugedes j\u00e4rjestikku andmeid naaberrakkudest. Kuna DRAM m\u00e4lu koosneb kahes m\u00f5\u00f5tmes olevate rakkude struktuurist, kus iga rakk koosneb kondensaatorist ja transistorist, toob pidev sama piirkonna lugemine kaasa pingefluktuaatsioonid ja anomaaliad, mis p\u00f5hjustavad naaberrakkude v\u00e4ikese laengukaotuse. Kui lugemisintensiivsust on palju, v\u00f5ib naabruses asuv rakk kaotada piisavalt suures koguses laengut, ja j\u00e4rgmine regeneratsioonits\u00fckkel ei suuda selle algset seisundit taastada, mille tulemuseks on andmete muutumine salvestatud raku v\u00e4\u00e4rtuses. RowHammeri eest kaitsmiseks lisasid m\u00e4chipide tootjad TRR (Target Row Refresh) mehhanismi, mis blokeerib m\u00f5nedes olukordades rakkude moonutamise, kuid ei kaitse k\u00f5igi v\u00f5imalike r\u00fcnnakute variantide eest.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 38C3 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a FlippyRAM, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 Rowhammer \u0434\u043b\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. \u041a\u043e\u0434 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u0421++ \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 MIT. \u0414\u043b\u044f \u0443\u043f\u0440\u043e\u0449\u0435\u043d\u0438\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d \u0433\u043e\u0442\u043e\u0432\u044b\u0439 live-\u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432 (1 \u0413\u0411), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0432\u0435\u0441\u0442\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0443, \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0432\u0448\u0438\u0441\u044c \u0441 USB Flash, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043e\u0431\u0440\u0430\u0437 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0430 \u0434\u043b\u044f Docker. \u0426\u0435\u043b\u044c\u044e \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\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-121204","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\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\udd47FlippyRAM \u2014 Rowhammeri r\u00fcnnaku testimiseks m\u00f5eldud distributsioon | ProHoster","description":"Konverentsil 38C3 esitati FlippyRAM raamistik, mis on m\u00f5eldud haavatavuste kontrollimiseks, mis v\u00f5imaldavad Rowhammeri r\u00fcnnakute kaudu t\u00f6\u00f6m\u00e4lu sisu muutmist.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer","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\udd47FlippyRAM \u2014 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432 \u0434\u043b\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 Rowhammer | ProHoster","og:description":"\u041d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 38C3 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a FlippyRAM, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u0441\u043e\u0432\u0435\u0440\u0448\u0438\u0442\u044c \u0430\u0442\u0430\u043a\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 Rowhammer \u0434\u043b\u044f \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer","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":"2025-01-02T07:46:09+00:00","article:modified_time":"2025-01-02T07:46:09+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"121204","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":"2026-01-23 09:21:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-23 09:21:20","updated":"2026-01-23 09:21:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/121204","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=121204"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/121204\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=121204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=121204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=121204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}