{"id":38921,"date":"2019-10-31T22:26:45","date_gmt":"2019-10-31T19:26:45","guid":{"rendered":"https:\/\/prohoster.info\/blog\/uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux\/"},"modified":"2019-10-31T22:26:45","modified_gmt":"2019-10-31T19:26:45","slug":"uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux","title":{"rendered":"S\u00e5rbarhed i Sudo tillader udf\u00f8relse af kommandoer med superbrugerrettigheder p\u00e5 enheder med Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Der er blevet opdaget en s\u00e5rbarhed i Sudo (super user do) til Linux. Udnyttelse af denne s\u00e5rbarhed giver ikke-privilegerede brugere eller programmer mulighed for at udf\u00f8re kommandoer med superbrugerrettigheder. Det bem\u00e6rkes, at s\u00e5rbarheden p\u00e5virker systemer med ikke-standardindstillinger og ikke vedr\u00f8rer de fleste servere, der k\u00f8rer Linux.<\/p>\n

\"S\u00e5rbarhed<\/p>\n

S\u00e5rbarheden opst\u00e5r, n\u00e5r der anvendes Sudo-konfigurationsindstillinger, der tillader udf\u00f8relse af kommandoer p\u00e5 vegne af andre brugere. Desuden kan Sudo konfigureres p\u00e5 en s\u00e6rlig m\u00e5de, der muligg\u00f8r udf\u00f8relse af kommandoer p\u00e5 vegne af andre brugere, undtagen superbrugeren. For dette skal der foretages de relevante justeringer i konfigurationsfilen.<\/p>\n

Problemet ligger i, hvordan Sudo behandler brugeridentifikatorer. Hvis du indtaster brugeridentifikatoren -1 eller dens \u00e6kvivalent 4294967295 i kommandolinjen, kan den k\u00f8rte kommando udf\u00f8res med superbrugerrettigheder. Da de n\u00e6vnte brugeridentifikatorer ikke er registreret i adgangskodedatabasen, kr\u00e6ves der ikke indtastning af adgangskode for at udf\u00f8re kommandoen.<\/p>\n

For at reducere sandsynligheden for problemer relateret til den n\u00e6vnte s\u00e5rbarhed anbefales det, at brugerne hurtigst muligt opdaterer Sudo til version 1.8.28 eller nyere. Det fremg\u00e5r af meddelelsen, at i den nye version af Sudo anvendes parameteren -1 ikke l\u00e6ngere som brugeridentifikator. Det betyder, at ondsindede akt\u00f8rer ikke vil kunne udnytte denne s\u00e5rbarhed.  <\/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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\u0432\u043e\u0437\u043d\u0438\u043a\u0430\u0435\u0442 \u0432 \u0441\u043b\u0443\u0447\u0430\u044f\u0445, \u043a\u043e\u0433\u0434\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 Sudo, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c 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