{"id":37225,"date":"2019-10-31T22:16:26","date_gmt":"2019-10-31T19:16:26","guid":{"rendered":"https:\/\/prohoster.info\/blog\/ataka-knob-pozvolyayushhaya-perehvatit-zashifrovannyj-trafik-bluetooth\/"},"modified":"2019-10-31T22:16:26","modified_gmt":"2019-10-31T19:16:26","slug":"ataka-knob-pozvolyayushhaya-perehvatit-zashifrovannyj-trafik-bluetooth","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/ataka-knob-pozvolyayushhaya-perehvatit-zashifrovannyj-trafik-bluetooth","title":{"rendered":"Sulmi KNOB, i cili lejon kapjen e trafikut t\u00eb enkriptuar Bluetooth","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zbulua<\/a><\/noindex> informacion<\/a><\/noindex> n\u00eb lidhje me sulmin KNOB<\/a><\/noindex> (Negocimi i \u00c7el\u00ebsit t\u00eb Bluetooth), i cili lejon organizimin e kapjes dhe nd\u00ebrrimit t\u00eb informacionit n\u00eb trafikun e kriptuar t\u00eb Bluetooth-it. Duke pasur mund\u00ebsin\u00eb p\u00ebr t\u00eb bllokuar d\u00ebrgimin e drejtp\u00ebrdrejt\u00eb t\u00eb paketave gjat\u00eb procesit t\u00eb negocimit t\u00eb lidhjes mes pajisjeve Bluetooth, sulmuesi mund t\u00eb arrij\u00eb t\u00eb p\u00ebrdor\u00eb p\u00ebr seanc\u00ebn \u00e7el\u00ebsa q\u00eb p\u00ebrmbajn\u00eb vet\u00ebm 1 byte entropi, gj\u00eb q\u00eb lejon p\u00ebrdorimin e metod\u00ebs s\u00eb prov\u00ebs direkte (brute-force) p\u00ebr t\u00eb p\u00ebrkufizuar \u00e7el\u00ebsin e kriptimit. <\/p>\n

Problemi \u00ebsht\u00eb shkaktuar nga mosp\u00ebrputhjet (CVE-2019-9506) n\u00eb specifikimin e Bluetooth BR\/EDR Core 5.1 dhe versione m\u00eb t\u00eb hershme, t\u00eb cilat lejojn\u00eb p\u00ebrdorimin e \u00e7el\u00ebsave t\u00eb p\u00ebrpunuar shum\u00eb t\u00eb shkurt\u00ebr dhe nuk pengojn\u00eb nd\u00ebrhyrjen e nj\u00eb sulmuesi gjat\u00eb faz\u00ebs s\u00eb negociatave t\u00eb lidhjes p\u00ebr t'u rikthyer n\u00eb \u00e7el\u00ebsa t\u00eb till\u00eb t\u00eb pasigurt (mund\u00ebsia e z\u00ebvend\u00ebsimit t\u00eb paketave nga nj\u00eb sulmues i paautorizuar). Sulmi mund t\u00eb kryhet gjat\u00eb negociatave t\u00eb lidhjes s\u00eb pajisjeve (seancat e vendosura nuk mund t\u00eb sulmohen) dhe \u00ebsht\u00eb efektiv vet\u00ebm p\u00ebr lidhjet n\u00eb modulet BR\/EDR (Bluetooth Basic Rate\/Enhanced Data Rate), n\u00ebse t\u00eb dy pajisjet jan\u00eb t\u00eb ndjeshme ndaj k\u00ebsaj cenueshm\u00ebrie. N\u00eb rastin e nj\u00eb p\u00ebrzgjedhjeje t\u00eb suksesshme t\u00eb \u00e7el\u00ebsit, sulmuesi mund t\u00eb dekriptoj\u00eb t\u00eb dh\u00ebnat q\u00eb transmetohen dhe n\u00eb m\u00ebnyr\u00eb t\u00eb padukshme nga viktima t\u00eb z\u00ebvend\u00ebsoj\u00eb trafikun me tekst t\u00eb enkriptuar t\u00eb rast\u00ebsish\u00ebm.<\/p>\n

Kur lidhja mes dy kontrolluesve Bluetooth A dhe B, kontrolluesi A, pas autentikimit me \u00e7el\u00ebsin kanalesh (link key), mund t\u00eb propozoj\u00eb p\u00ebrdorimin e 16 byte entropi si \u00e7el\u00ebs p\u00ebr enkriptim (encryption key), dhe kontrolluesi B mund t\u00eb pranoj\u00eb k\u00ebt\u00eb vler\u00eb ose t\u00eb propozoj\u00eb nj\u00eb vler\u00eb m\u00eb t\u00eb ul\u00ebt n\u00ebse nuk ka mund\u00ebsi t\u00eb krijoj\u00eb nj\u00eb \u00e7el\u00ebs t\u00eb atij madh\u00ebsie. N\u00eb p\u00ebrgjigje, kontrolluesi A mund t\u00eb pranoj\u00eb propozimin dhe t\u00eb aktivizoj\u00eb kanalin e enkriptuar t\u00eb komunikimit. N\u00eb k\u00ebt\u00eb faz\u00eb t\u00eb negociatave, nuk aplikohet enkriptimi, k\u00ebshtu q\u00eb nj\u00eb sulmues ka mund\u00ebsin\u00eb t\u00eb nd\u00ebrhyj\u00eb n\u00eb shk\u00ebmbimin e t\u00eb dh\u00ebnave midis kontrolluesve dhe t\u00eb manipuloj\u00eb paket\u00ebn me madh\u00ebsin\u00eb e propozuar t\u00eb entropis\u00eb. Duke qen\u00eb se madh\u00ebsia e pranueshme e \u00e7el\u00ebsit varion nga 1 n\u00eb 16 byte, kontrolluesi i dyt\u00eb do t\u00eb pranoj\u00eb k\u00ebt\u00eb vler\u00eb dhe do t\u00eb d\u00ebrgoj\u00eb nj\u00eb konfirmim n\u00eb lidhje me madh\u00ebsin\u00eb e ngjashme.<\/p>\n

\"Sulmi<\/a><\/noindex><\/center><\/p>\n

P\u00ebr t\u00eb riprodhuar vulnerabilitetin n\u00eb kushte laboratorike (aktiviteti i k\u00ebrc\u00ebnuesit u emetua n\u00eb nj\u00eb nga pajisjet), \u00ebsht\u00eb propozuar
\nprototipi i mjeteve<\/a><\/noindex> p\u00ebr realizimin e sulmit.
\nP\u00ebr nj\u00eb sulm t\u00eb suksessh\u00ebm, sulmuesi duhet t\u00eb jet\u00eb brenda rangut t\u00eb pajisjeve t\u00eb viktimave dhe t\u00eb ket\u00eb mund\u00ebsin\u00eb p\u00ebr t\u00eb bllokuar p\u00ebrkoh\u00ebsisht sinjalin e \u00e7do pajisjeje, q\u00eb propozohet t\u00eb realizohet p\u00ebrmes manipulimit t\u00eb sinjalit ose gjenerimi t\u00eb zhurmave. <\/p>\n

Organizata Bluetooth SIG, e cila \u00ebsht\u00eb p\u00ebrgjegj\u00ebse p\u00ebr zhvillimin e standardeve Bluetooth, publikoi<\/a><\/noindex> ka b\u00ebr\u00eb korrigjimin e specifikacionit me num\u00ebr 11838, n\u00eb t\u00eb cilin propozohen masa nga prodhuesit p\u00ebr t\u00eb bllokuar dob\u00ebsin\u00eb (shkalla minimale e \u00e7el\u00ebsit t\u00eb enkriptimit \u00ebsht\u00eb rritur nga 1 n\u00eb 7). Problemi shfaqet<\/a><\/noindex> ndodhet t\u00eb gjitha<\/a><\/noindex> n\u00eb stak dhe firmware t\u00eb p\u00ebrputhshme me standardin Bluetooth, p\u00ebrfshir\u00eb produktet Intel<\/a><\/noindex>, Broadcom, Lenovo<\/a><\/noindex>, Apple<\/a><\/noindex>, Microsoft<\/a><\/noindex>, Qualcomm, Linux, Android<\/a><\/noindex>, Blackberry<\/a><\/noindex> dhe Cisco<\/a><\/noindex> (nga 14 \u00e7ipa t\u00eb testuar, t\u00eb gjith\u00eb ishin t\u00eb ndjesh\u00ebm). N\u00eb stakun Bluetooth t\u00eb kernelit Linux \u00ebsht\u00eb futur<\/a><\/noindex> nj\u00eb rregullim q\u00eb lejon ndryshimin e madh\u00ebsis\u00eb minimale t\u00eb \u00e7el\u00ebsit t\u00eb enkriptimit. <\/p>\n

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

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

\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0430\u0442\u0430\u043a\u0435 KNOB (Key Negotiation Of Bluetooth), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0442 \u0438 \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0432 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c Bluetooth-\u0442\u0440\u0430\u0444\u0438\u043a\u0435. \u0418\u043c\u0435\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u044f\u043c\u0443\u044e \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0443 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u0441\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d\u0438\u044f Bluetooth-\u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432, \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u043b\u044f \u0441\u0435\u0430\u043d\u0441\u0430 \u043a\u043b\u044e\u0447\u0435\u0439, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0438\u0445 \u0432\u0441\u0435\u0433\u043e 1 \u0431\u0430\u0439\u0442 \u044d\u043d\u0442\u0440\u043e\u043f\u0438\u0438, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u0442\u044c \u043c\u0435\u0442\u043e\u0434 \u043f\u0440\u044f\u043c\u043e\u0433\u043e \u043f\u0435\u0440\u0435\u0431\u043e\u0440\u0430 (brute-force) \u0434\u043b\u044f \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043a\u043b\u044e\u0447\u0430 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043d\u0435\u0434\u043e\u0440\u0430\u0431\u043e\u0442\u043a\u0430\u043c\u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":27914,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-37225","post","type-post","status-publish","format-standard","has-post-thumbnail","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\udd47Sulmi KNOB, q\u00eb lejon kapjen e trafikut t\u00eb enkriptuar Bluetooth | ProHoster","description":"Informacionet mbi sulmin KNOB (Negocimi i \u00c7el\u00ebsit t\u00eb Bluetooth-it), i cili lejon organizimin e kapjes dhe z\u00ebvend\u00ebsimit t\u00eb informacionit n\u00eb trafikun e enkriptuar Bluetooth. Duke pasur mund\u00ebsin\u00eb p\u00ebr t\u00eb bllokuar transmetimin e drejtp\u00ebrdrejt\u00eb t\u00eb paketave gjat\u00eb procesit t\u00eb negociat\u00ebs p\u00ebr lidhjen e pajisjeve Bluetooth, sulmuesi mund t\u00eb arrij\u00eb p\u00ebrdorimin e \u00e7el\u00ebsave p\u00ebr seanc\u00ebn, q\u00eb p\u00ebrmbajn\u00eb vet\u00ebm 1 byte entropi, gj\u00eb q\u00eb leht\u00ebson p\u00ebrdorimin e metod\u00ebs s\u00eb prov\u00ebs p\u00ebrmes forc\u00ebs s\u00eb drejtp\u00ebrdrejt\u00eb (brute-force) p\u00ebr t\u00eb p\u00ebrcaktuar \u00e7el\u00ebsin e enkriptimit. 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