{"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\/sv\/blog\/news\/uyazvimost-v-sudo-pozvolyaet-vypolnyat-komandy-s-pravami-superpolzovatelya-na-ustrojstvah-s-linux","title":{"rendered":"En s\u00e5rbarhet i Sudo m\u00f6jligg\u00f6r att kommandon k\u00f6rs med superanv\u00e4ndarr\u00e4ttigheter p\u00e5 enheter som k\u00f6r Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Det har blivit k\u00e4nt om en s\u00e5rbarhet i kommandot Sudo (super user do) f\u00f6r Linux. Utnyttjandet av denna s\u00e5rbarhet g\u00f6r att oprivilegierade anv\u00e4ndare eller program kan k\u00f6ra kommandon med superanv\u00e4ndarr\u00e4ttigheter. Det noteras att s\u00e5rbarheten p\u00e5verkar system med ostandardiserade inst\u00e4llningar och inte ber\u00f6r de flesta servrar som k\u00f6r Linux.<\/p>\n

\"En<\/p>\n

S\u00e5rbarheten uppst\u00e5r n\u00e4r Sudo-konfigurationsinst\u00e4llningar anv\u00e4nds som till\u00e5ter k\u00f6rning av kommandon i andra anv\u00e4ndares namn. Dessutom kan Sudo konfigureras p\u00e5 ett s\u00e4rskilt s\u00e4tt, vilket m\u00f6jligg\u00f6r k\u00f6rning av kommandon i andra anv\u00e4ndares namn, med undantag f\u00f6r superanv\u00e4ndaren. F\u00f6r detta kr\u00e4vs \u00e4ndringar i konfigurationsfilen.<\/p>\n

K\u00e4rnan i problemet ligger i hur Sudo hanterar anv\u00e4ndaridentifierare. Om du anger anv\u00e4ndaridentifieraren -1 eller dess motsvarighet 4294967295 i kommandoraden, kan det k\u00f6rda kommandot utf\u00f6ras med superanv\u00e4ndarr\u00e4ttigheter. Eftersom de angivna anv\u00e4ndaridentifierarna inte finns i l\u00f6senordsdatabasen, kr\u00e4vs inget l\u00f6senord f\u00f6r att k\u00f6ra kommandot.<\/p>\n

F\u00f6r att minska risken f\u00f6r problem relaterade till den n\u00e4mnda s\u00e5rbarheten rekommenderas anv\u00e4ndare att s\u00e5 snart som m\u00f6jligt uppdatera Sudo till version 1.8.28 eller senare. I meddelandet anges att i den nya versionen av Sudo anv\u00e4nds inte parameter -1 l\u00e4ngre som anv\u00e4ndaridentifierare. Detta inneb\u00e4r att angripare inte kan utnyttja denna s\u00e5rbarhet.  <\/p>\n

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K\u00e4lla: 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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