{"id":84776,"date":"2020-06-11T01:41:55","date_gmt":"2020-06-10T23:41:55","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-vo-freebsd-ekspluatiruemaya-cherez-vredonosnoe-usb-ustrojstvo"},"modified":"2020-06-11T01:41:55","modified_gmt":"2020-06-10T23:41:55","slug":"uyazvimost-vo-freebsd-ekspluatiruemaya-cherez-vredonosnoe-usb-ustrojstvo","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/uyazvimost-vo-freebsd-ekspluatiruemaya-cherez-vredonosnoe-usb-ustrojstvo","title":{"rendered":"Vulnerabilitate \u00een FreeBSD, exploatat\u0103 printr-un dispozitiv USB r\u0103u inten\u021bionat","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen FreeBSD remediat\u0103<\/a><\/noindex> o vulnerabilitate \u00een stiva USB (CVE-2020-7456), care permite executarea de cod la nivel de kernel sau \u00een spa\u021biul utilizatorului prin conectarea unui dispozitiv USB mali\u021bios la sistem. Descrierile dispozitivelor USB HID (Human Interface Device) pot insera \u0219i extrage starea curent\u0103, permi\u021b\u00e2nd combinarea descrierilor elementelor \u00een grupuri multilaterale. FreeBSD suport\u0103 p\u00e2n\u0103 la 4 asemenea niveluri de extragere. Dac\u0103 nivelul nu a fost restabilit \u00een timpul proces\u0103rii aceluia\u0219i element HID, se face referire la o zon\u0103 de memorie incorect\u0103. Problema a fost rezolvat\u0103 \u00een actualiz\u0103rile FreeBSD 11.3-RELEASE-p10 \u0219i 12.1-RELEASE-p6. Ca o m\u0103sur\u0103 de protec\u021bie, se recomand\u0103 setarea parametrului «sysctl hw.usb.disable_enumeration=1».<\/p>\n

Vulnerabilitatea a fost identificat\u0103 de Andy Nguyen de la Google \u0219i nu se suprapune cu o alt\u0103 problem\u0103 recent\u0103 anun\u021bat\u0103<\/a><\/noindex> de cercet\u0103tori de la Universitatea Purdue \u0219i \u0218coala Politehnic\u0103 Federal\u0103 din Lausanne. Ace\u0219ti cercet\u0103tori au dezvoltat un instrument numit USBFuzz, care simuleaz\u0103 un dispozitiv USB defectuos pentru testarea fuzzing a driverelor USB. USBFuzz este planificat s\u0103 fie disponibil \u00een cur\u00e2nd. publicat pe GitHub<\/a><\/noindex>. Cu ajutorul noului instrument au fost identificate 26 de vulnerabilit\u0103\u021bi, dintre care 18 \u00een Linux, 4 \u00een Windows, 3 \u00een macOS \u0219i una \u00een FreeBSD. Detaliile despre aceste probleme nu sunt \u00eenc\u0103 dezv\u0103luite, s-a men\u021bionat doar c\u0103 pentru 10 vulnerabilit\u0103\u021bi s-au ob\u021binut identificate CVE, iar 11 probleme care afecteaz\u0103 Linux au fost deja corectate. O tehnic\u0103 similar\u0103 de testare fuzzing utilizeaz\u0103<\/a><\/noindex> Andrei Konovalov de la Google, care \u00een ultimii c\u00e2\u021biva ani a identificat<\/a><\/noindex> 44<\/a><\/noindex> vulnerabilit\u0103\u021bi<\/a><\/noindex> \u00een stiva USB a Linux.<\/p>\n

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

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

\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 USB-\u0441\u0442\u0435\u043a\u0435 (CVE-2020-7456), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 \u043d\u0430 \u0443\u0440\u043e\u0432\u043d\u0435 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u043f\u0440\u0438 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0438 \u043a \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0433\u043e USB-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430. \u0414\u0435\u0441\u043a\u0440\u0438\u043f\u0442\u043e\u0440\u044b \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 USB HID (Human Interface Device) \u043c\u043e\u0433\u0443\u0442 \u043f\u043e\u043c\u0435\u0449\u0430\u0442\u044c \u0438 \u0438\u0437\u0432\u043b\u0435\u043a\u0430\u0442\u044c \u0442\u0435\u043a\u0443\u0449\u0435\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044f \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u044f\u0442\u044c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u044f \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u0432 \u043c\u043d\u043e\u0433\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u044b\u0435 \u0433\u0440\u0443\u043f\u043f\u044b. FreeBSD \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0434\u043e 4 \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u0443\u0440\u043e\u0432\u043d\u0435\u0439 \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u044f. \u0415\u0441\u043b\u0438 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043d\u0435 […]<\/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-84776","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\udd47Vulnerabilitate \u00een FreeBSD, exploatat\u0103 printr-un dispozitiv USB mali\u021bios | 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