{"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\/novosti-interneta\/flippyram-distributiv-dlya-testirovaniya-ataki-rowhammer","title":{"rendered":"FlippyRAM \u2014 Rowhammer r\u00fcnnakute testimiseks m\u00f5eldud distributsioon","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Konverentsil 38C3 esitletakse FlippyRAM raamistikku, mis on m\u00f5eldud haavatavuste kontrollimiseks, mis v\u00f5imaldavad Rowhammeri t\u00fc\u00fcpi r\u00fcnnakute abil muuta muutm\u00e4lu sisu. T\u00f6\u00f6riista kood on kirjutatud C++ keeles ja levitatakse MIT litsentsi all. Testimise lihtsustamiseks on loodud valmis live-dists, mille suurus on 1 GB, v\u00f5imaldades kontrollimist USB Flashi kaudu k\u00e4ivitades, samuti Docker'i konteineri pilt. <\/p>\n

Projekti eesm\u00e4rk on kaasata kasutajaid uuringusse, mille eesm\u00e4rk on koguda statistikat selle kohta, kui palju Rowhammeri t\u00fc\u00fcpi haavatavusi avaldub laialdaselt kasutatavates s\u00fcsteemides. Testimise tulemused saab saata nii k\u00e4ivitatud distsi kaudu kui ka k\u00e4sitsi uuringu veebilehele lisada. <\/p>\n

Rowhammeri r\u00fcnde on v\u00e4lja pakutud 10 aastat tagasi, mil hakati turvauurijate ja riistvaratootjate vahel m\u00e4ngima «kiisut-kass’-m\u00e4ngu» — m\u00e4chipitootjad p\u00fc\u00fcdsid haavatavust blokeerida, samas kui uurijad leidsid uusi viise selle \u00fcmbersuunamiseks. Lisaks DDR3 m\u00e4chipidele Intel x86 s\u00fcsteemides on tuvastatud r\u00fcndemeetodeid DDR4 ja DDR5 m\u00e4chipide, AMD ja ARM protsessoritega s\u00fcsteemide r\u00fcndamiseks, ECC vea parandamise \u00fcmbersuunamise variandid, ning r\u00fcnnakud, mis toimuvad v\u00f5rgu ja JavaScripti koodi t\u00e4itmise kaudu brauseris. <\/p>\n

RowHammer'i r\u00fcnnak v\u00f5imaldab moonutada DRAM m\u00e4lubiitide sisu, lugedes pidevalt andmeid naaberm\u00e4lu rakkudest. Kuna DRAM m\u00e4lu on kaks m\u00f5\u00f5det rakke, millest iga\u00fcks koosneb kondensaatorist ja transistoreist, p\u00f5hjustab sama ala pidev lugemine pinge k\u00f5ikumisi ja anomaaliaid, mis p\u00f5hjustavad naaberakrude v\u00e4ikese laadimise kaotuse. Kui lugemisintensiivsus on k\u00f5rge, v\u00f5ib naaberrakk kaotada piisavalt suurt hulka laengut ja j\u00e4rgmine regeneratsiooni ts\u00fckkel ei pruugi taastada selle algset seisundit, mis viib andmete v\u00e4\u00e4rtuse muutumiseni s\u00e4ilitatud rakus. RowHammer'i eest kaitsmiseks on kiibitootjad lisanud TRR (Target Row Refresh) mehhanismi, mis blokeerib rakud moonutamast teatud juhtudel, kuid ei kaitse k\u00f5igi v\u00f5imalike r\u00fcnnakute 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-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\udd47FlippyRAM \u2014 Rowhammer r\u00fcnnaku testimiseks m\u00f5eldud distribuut | ProHoster","description":"Konverentsil 38C3 tutvustati FlippyRAM raamistikku, mis on m\u00f5eldud Rowhammer r\u00fcnnakute eest kaitsev\u00f5ime testimiseks, et muuta m\u00e4lus hoiduvat teavet. T\u00f6\u00f6riista kood on kirjutatud C++ keeles ning see on litsentseeritud MIT litsentsi alusel. Testimise lihtsustamiseks on loodud valmis live-distro (1 GB), mis v\u00f5imaldab kontrollimist USB Flash-ilt k\u00e4ivitatuna, samuti Docker'i konteineri pilt. Projekti eesm\u00e4rk on","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/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 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\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 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