{"id":53579,"date":"2019-12-05T00:00:00","date_gmt":"2019-12-04T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/ataka-na-hackerone-pozvolivshaya-poluchit-dostup-k-zakrytym-otchyotam-ob-uyazvimostyah"},"modified":"2021-01-02T13:04:14","modified_gmt":"2021-01-02T11:04:14","slug":"ataka-na-hackerone-pozvolivshaya-poluchit-dostup-k-zakrytym-otchyotam-ob-uyazvimostyah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/ataka-na-hackerone-pozvolivshaya-poluchit-dostup-k-zakrytym-otchyotam-ob-uyazvimostyah","title":{"rendered":"Angreb p\u00e5 HackerOne, der gav adgang til lukkede rapporter om s\u00e5rbarheder","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

HackerOne-platformen, der giver sikkerhedsresearchere mulighed for at informere udviklere om opdagede s\u00e5rbarheder og modtage bel\u00f8nninger for det, har f\u00e5et en rapport<\/a><\/noindex> omstilling. En af researcherene form\u00e5ede at f\u00e5 adgang til en sikkerhedsanalyzers konto p\u00e5 HackerOne, som havde mulighed for at se lukkede materialer, herunder oplysninger om endnu ikke rettede s\u00e5rbarheder. Siden platformens opstart er der via HackerOne blevet udbetalt i alt 23 millioner dollars til forskere for at identificere s\u00e5rbarheder i produkter fra over 100 kunder, herunder Twitter, Facebook, Google, Apple, Microsoft, Slack, Pentagon og den amerikanske fl\u00e5de.<\/p>\n

Det er bem\u00e6rkelsesv\u00e6rdigt, at kontoen blev overtaget p\u00e5 grund af menneskelig fejl. En af researcherene indsendte en anmodning om en potentiel s\u00e5rbarhed til HackerOne. HackerOne-analytikeren fors\u00f8gte under vurderingen at reproducere den foresl\u00e5ede hacket metode, men kunne ikke genskabe problemet, og forfatteren af anmodningen fik en tilbagemelding med en anmodning om flere detaljer. I processen bem\u00e6rkede analytikeren ikke, at han ved en fejl sendte indholdet af sin sessionscookie sammen med resultaterne af den mislykkede kontrol. Specifikt gav analytikeren et eksempel p\u00e5 en HTTP-anmodning udf\u00f8rt med curl-v\u00e6rkt\u00f8jet, som indeholdt HTTP-overskrifter, hvor han glemte at fjerne indholdet af sessionscookien.<\/p>\n

Researcheren opdagede denne fejl og kunne f\u00e5 adgang til en privilegeret konto p\u00e5 hjemmesiden hackerone.com blot ved at inds\u00e6tte den observerede cookie-v\u00e6rdi uden at skulle gennemg\u00e5 den multifaktorautentificering, der anvendes af tjenesten. Angrebet blev muligt, da der ikke var session-bindings til IP eller brugerens browser p\u00e5 hackerone.com. Den problematiske session-id blev fjernet to timer efter offentligg\u00f8relsen af l\u00e6kagerapporten. For at informere om problemet blev der besluttet at udbetale 20.000 dollars til forskeren.<\/p>\n

HackerOne har igangsat en revision for at analysere muligheden for lignende cookie-l\u00e6kager i fortiden og for at vurdere potentielle l\u00e6kager af fortrolige oplysninger om problemerne for tjenestens kunder. Revisionen afsl\u00f8rede ingen l\u00e6kager i fortiden og fastslog, at den forsker, der demonstrerede problemet, kunne have f\u00e5et adgang til omkring 5 % af alle de programmer, der blev pr\u00e6senteret i tjenesten, som var tilg\u00e6ngelige for analytikeren, hvis sessionstast blev brugt.<\/p>\n

For at beskytte mod s\u00e5danne angreb i fremtiden er der implementeret binding af sessionstasten til IP-adressen<\/a> og filtrering af sessionstaster og autentificeringstokener i kommentarer. I fremtiden planl\u00e6gges bindingsmetoden til IP at blive erstattet med binding til brugerens enheder, da IP-binding er genstand for udfordringer for brugere med dynamisk tildelte adresser. Det er ogs\u00e5 besluttet at udvide logsystemet med oplysninger om brugernes adgang til data og implementere en model for granul\u00e6r adgang for analytikere til kundernes data.<\/p>\n

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

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

\u041f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430 HackerOne, \u0434\u0430\u044e\u0449\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u043d\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0438 \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u044c \u0437\u0430 \u044d\u0442\u043e \u0432\u043e\u0437\u043d\u0430\u0433\u0440\u0430\u0436\u0434\u0435\u043d\u0438\u044f, \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043e\u0442\u0447\u0451\u0442 \u043e \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u043c \u0432\u0437\u043b\u043e\u043c\u0435. \u041e\u0434\u043d\u043e\u043c\u0443 \u0438\u0437 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u0439 \u0443\u0434\u0430\u043b\u043e\u0441\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u0443\u0447\u0451\u0442\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u043a\u0430 \u043f\u043e \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 HackerOne, \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u0430 \u0437\u0430\u043a\u0440\u044b\u0442\u044b\u0445 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u043e\u0432, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0441\u043e \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f\u043c\u0438 \u043e\u0431 \u0435\u0449\u0451 \u043d\u0435 \u0443\u0441\u0442\u0440\u0430\u043d\u0451\u043d\u043d\u044b\u0445 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445. \u0417\u0430 \u0432\u0440\u0435\u043c\u044f \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u0447\u0435\u0440\u0435\u0437 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53579","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\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\udd47Angrebet p\u00e5 HackerOne, der gav adgang til lukkede rapporter om 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