{"id":30609,"date":"2019-10-31T21:36:28","date_gmt":"2019-10-31T18:36:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte\/"},"modified":"2019-10-31T21:36:28","modified_gmt":"2019-10-31T18:36:28","slug":"spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/spetsialisty-nashli-36-novyh-uyazvimostej-v-protokole-4g-lte","title":{"rendered":"Specialister har fundet 36 nye s\u00e5rbarheder i 4G LTE-protokollen","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Hver gang der skiftes til en nyere mobilstandard, betyder det ikke kun en \u00f8get dataoverf\u00f8rselshastighed, men ogs\u00e5 et mere p\u00e5lideligt og sikrere netv\u00e6rk mod uautoriseret adgang. For dette form\u00e5l anvendes s\u00e5rbarheder fra tidligere protokoller sammen med nye sikkerhedstestmetoder. I denne henseende lover 5G-protokollen at v\u00e6re mere p\u00e5lidelig end 4G (LTE), selvom der ikke kan udelukkes, at der i fremtiden vil blive opdaget s\u00e5rbarheder i '5G'. Ligeledes har \u00e5rene med 4G-anvendelse ikke befriet denne protokol fra at afsl\u00f8re mange nye s\u00e5rbarheder. Et aktuelt eksempel, der bekr\u00e6fter dette, er en unders\u00f8gelse udf\u00f8rt af sydkoreanske sikkerhedsspecialister, der opdagede 36 nye farlige s\u00e5rbarheder i 4G-protokollen.<\/p>\n

\"Specialister<\/p>\n

Specialister fra Korea Advanced Institute of Science and Technology (KAIST) anvendte den samme metode til at finde s\u00e5rbarheder i LTE-protokollen (i netv\u00e6rket), som bruges til at finde problematiske l\u00f8sninger i software til pc'er, servere<\/a>. Dette kaldes fuzzer-metoden, hvor systemet belastningstestes med en sekvens af forkerte, uventede eller tilf\u00e6ldige data. Efter belastningen analyseres systemets respons, og der opbygges scenarier for beskyttelse eller forst\u00e6rkning af angrebet. Dette arbejde kan udf\u00f8res i en semi-automatisk tilstand, hvor systemet h\u00e5ndterer dataoverf\u00f8rselsprocessen, mens angrebsscenarierne og analysen af de indsamlede data udvikles manuelt. For eksempel har KAIST udviklet v\u00e6rkt\u00f8jet LTEFuzz til at teste sikkerheden af LTE-protokollen og finde s\u00e5rbarheder, men de lover ikke at uploade det til offentligheden, kun at overf\u00f8re det til udstyrsproducenter og telekommunikationsoperat\u00f8rer.<\/p>\n

\"Specialister
\n<\/center><\/p>\n

Med LTEFuzz blev der opdaget over 50 s\u00e5rbarheder, hvoraf 36 var helt nye. Metoden muliggjorde ogs\u00e5 identifikation af 15 allerede kendte s\u00e5rbarheder, hvilket bekr\u00e6ftede, at den valgte teknologi var korrekt (hvis de er kendte, hvorfor er de s\u00e5 ikke blevet lukket?). Testningen blev udf\u00f8rt i netv\u00e6rkene hos to anonyme operat\u00f8rer og i samarbejde med dem, s\u00e5 almindelige brugere blev ikke ramt. Der blev afsl\u00f8ret mange interessante efterforskninger. Det var muligt at overv\u00e5ge abonnenter, f\u00e5 adgang til data under udvekslingen mellem basestationer og enheder, sende falske SMS'er, blokere indkommende opkald, frakoble abonnenter fra netv\u00e6rket, styre trafikken og meget mere. KAIST-specialisterne informeredes om alle de opdagede s\u00e5rbarheder, inklusive 'huller' i basestationernes udstyr, til leverand\u00f8rerne og organisationerne 3GPP og GSMA.<\/p>\n

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Kilde: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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