{"id":73923,"date":"2020-03-12T20:42:15","date_gmt":"2020-03-12T17:42:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva"},"modified":"2020-03-12T20:42:15","modified_gmt":"2020-03-12T17:42:15","slug":"google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/google-predstavil-blokirovshhik-podstanovki-vvoda-cherez-vredonosnye-usb-ustrojstva","title":{"rendered":"Google tutvustas sisestusblokki, et takistada pahatahtlike USB-seadmete kaudu sisestamist.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Google avalikustasin<\/a><\/noindex> utiliidi ukip<\/a><\/noindex>, mis v\u00f5imaldab j\u00e4lgida ja blokeerida r\u00fcnnaku<\/a><\/noindex>, mis toimub kahjulike USB-seadmete kasutamise kaudu, simuleerides USB-klaviatuuri, et varjatult sisestada vale klahvivajutusi (n\u00e4iteks v\u00f5ib r\u00fcnnaku k\u00e4igus olla simuleeritud<\/a><\/noindex> klahvivajutuste jada, mis viib terminali avamiseni ja selles satelliitk\u00e4skluste t\u00e4itmiseni). Kood on kirjutatud Pythonis ja GNU \u00dcldine Avaliku litsentsi alusel.<\/a><\/noindex> ainekood on litsentsitud Apache 2.0 all. <\/p>\n

T\u00f6\u00f6riist k\u00e4ivitatakse systemd teenusena ja v\u00f5ib t\u00f6\u00f6tada r\u00fcnnakute j\u00e4lgimise ja ennetamise re\u017eiimides. J\u00e4lgimisre\u017eiimis tuvastatakse v\u00f5imalikke r\u00fcnnakuid ja logitakse tegevused, mis on seotud USB-seadmete ebasobiva kasutamisega sisendi asendamiseks. Kaitse re\u017eiimis, kui tuvastatakse potentsiaalselt kahjulik seade, katkestatakse selle \u00fchendus s\u00fcsteemiga draiveri tasandil. <\/p>\n

Kahjulik tegevus tuvastatakse l\u00e4htudes sisendi iseloomu heuristilisest anal\u00fc\u00fcsist ja klahvivajutuste vahelisest viivitusest \u2014 r\u00fcnnak toimub tavaliselt kasutaja juuresolekul ja selle m\u00e4rkamatuks j\u00e4\u00e4miseks saadetakse simuleeritud klahvivajutused ebat\u00fc\u00fcpiliste, tavap\u00e4rasest klaviatuuri sisestush\u00e4irest madalamate viivitustega. R\u00fcnnakute tuvastamise loogika muutmiseks on ettepanekud kahe seadistuse jaoks: KEYSTROKE_WINDOW, mis m\u00e4\u00e4rab anal\u00fc\u00fcsiks vajalike klahvivajutuste arvu, ja ABNORMAL_TYPING, mis m\u00e4\u00e4rab klahvivajutuste vahelise lubatava intervalli.<\/p>\n

R\u00fcnnakut v\u00f5ib teostada kahtlusi \u00e4ratamata seadme, nagu n\u00e4iteks muudetud p\u00fcsivaraga klaviatuuri simuleerimise kaudu, USB-m\u00e4lupulgas<\/a><\/noindex>, USB-hubis<\/a><\/noindex>, veebikaamera kaudu<\/a><\/noindex> v\u00f5i nutitelefonis<\/a><\/noindex> (s Kali NetHunter<\/a><\/noindex> pakub spetsiaalset utiliiti, mis v\u00f5imaldab klaavi sisseseadmise simuleerimist USB-porti \u00fchendatud Android-platvormiga nutitelefonilt). R\u00fcnnakute keerukamaks muutmiseks USB kaudu saab kasutada lisaks ukipile ka paketti USBGuard<\/a><\/noindex>, mis lubab seadmete \u00fchendamist ainult valgete loendite kaudu v\u00f5i blokeerib v\u00f5imaluse \u00fchenduda tundmatute USB-seadmetega ekraani lukustamise ajal ning ei luba nende seadmete kasutamist p\u00e4rast kasutaja tagasip\u00f6\u00f6rdumist.<\/p>\n

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

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

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