{"id":103151,"date":"2022-01-31T21:36:52","date_gmt":"2022-01-31T19:36:52","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/udalyonnaya-root-uyazvimost-v-samba"},"modified":"2022-01-31T21:36:52","modified_gmt":"2022-01-31T19:36:52","slug":"udalyonnaya-root-uyazvimost-v-samba","status":"publish","type":"post","link":"https:\/\/prohoster.info\/no\/blog\/news\/udalyonnaya-root-uyazvimost-v-samba","title":{"rendered":"Fjernings-root-s\u00e5rbarhet i Samba.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Korrigerende utgivelser av versjonene 4.15.5, 4.14.12 og 4.13.17 er blitt publisert for \u00e5 fikse 3 s\u00e5rbarheter. Den mest kritiske s\u00e5rbarheten (CVE-2021-44142) tillater en fjernangriper \u00e5 kj\u00f8re vilk\u00e5rlig kode med root-rettigheter p\u00e5 et system med en s\u00e5rbar versjon av Samba. Dette problemet har f\u00e5tt en alvorlighetsgrad p\u00e5 9.9 av 10.    <\/p>\n<p>S\u00e5rbarheten viser seg bare n\u00e5r VFS-modulen vfs_fruit brukes med standardinnstillingene (fruit:metadata=netatalk eller fruit:resource=file), som gir et ekstra niv\u00e5 av kompatibilitet med macOS-klienter og forbedrer b\u00e6rbarheten med filsystemene. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/no\/server\/dts-dusseldorf\/\"   title=\"servere\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3448\">servere<\/a> Netatalk 3 AFP. Problemet er for\u00e5rsaket av et bufferoverl\u00f8p i koden som analyserer metadata med utvidede attributter (EA, xattr), som utl\u00f8ses under \u00e5pning av filer i smbd. For \u00e5 gjennomf\u00f8re et angrep m\u00e5 brukeren ha skrivetilgang til de utvidede attributtene for filen, mens angrepet ogs\u00e5 kan utf\u00f8res av en gjestebruker dersom de har f\u00e5tt lov til slik skriving.          <\/p>\n<p>Oppdatering av pakkene i distribusjoner kan f\u00f8lges p\u00e5 sidene: Debian, Ubuntu, RHEL, SUSE, Fedora, Arch, FreeBSD. Som en omg\u00e5else for beskyttelse kan man slette modulen [fruit] fra listen [vfs objects] i [smb.conf].      <\/p>\n<p>De to andre s\u00e5rbarhetene:  <\/p>\n<ul>\n<li class=\"l\"> S\u00e5rbarheten CVE-2022-0336 tillater en Samba AD DC-bruker \u00e5 utgi seg for \u00e5 v\u00e6re en annen tjeneste og organisere avlytting av trafikk adressert til denne tjenesten. For \u00e5 angripe m\u00e5 brukeren ha rett til \u00e5 endre attributtet servicePrincipalName i kontoen.\n<li class=\"l\"> S\u00e5rbarheten CVE-2021-44141 kan f\u00f8re til lekkasje av informasjon om eksistensen av filer og kataloger i filsystemomr\u00e5det utenfor den eksponerte Samba-partisjonen. Angrepet skjer gjennom manipulering av symboliske lenker.  <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56615\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 4.15.5, 4.14.12 \u0438 4.13.17 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c 3 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u0430\u0441\u043d\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2021-44142) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u043c\u0443 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0435\u0439 Samba. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 9.9 \u0438\u0437 10. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 VFS-\u043c\u043e\u0434\u0443\u043b\u044f vfs_fruit \u0441 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430\u043c\u0438 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e (fruit:metadata=netatalk \u0438\u043b\u0438 fruit:resource=file), \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-103151","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.5 - aioseo.com -->\n\t<meta name=\"description\" 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