{"id":181775,"date":"2026-05-28T02:48:09","date_gmt":"2026-05-28T00:48:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-v-samba-dopuskayushhie-udalyonnoe-vypolnenie-koda-v-redkih-konfiguracziyah"},"modified":"2026-05-28T02:48:09","modified_gmt":"2026-05-28T00:48:09","slug":"uyazvimosti-v-samba-dopuskayushhie-udalyonnoe-vypolnenie-koda-v-redkih-konfiguracziyah","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimosti-v-samba-dopuskayushhie-udalyonnoe-vypolnenie-koda-v-redkih-konfiguracziyah","title":{"rendered":"A Samba sebezhet\u0151s\u00e9gei, amelyek t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1st tesznek lehet\u0151v\u00e9 ritka konfigur\u00e1ci\u00f3kban","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Kiad\u00e1sra ker\u00fcltek a Samba 4.24.3, 4.23.8 \u00e9s 4.22.10 csomagok jav\u00edt\u00f3verzi\u00f3i, amelyek az SMB \u00e9s az Active Directory protokollok ny\u00edlt megval\u00f3s\u00edt\u00e1s\u00e1t ny\u00fajtj\u00e1k. Az \u00faj verzi\u00f3kban 6 sebezhet\u0151s\u00e9get jav\u00edtottak, amelyek k\u00f6z\u00fcl kett\u0151 lehet\u0151v\u00e9 teszi, hogy egy t\u00e1voli, hiteles\u00edtetlen t\u00e1mad\u00f3 k\u00f3dot futtasson a szerveren:<\/p>\n<ul>\n<li class=\"l\"> CVE-2026-4408 \u2014 s\u00e9r\u00fcl\u00e9kenys\u00e9g a SAMR (Security Account Manager) DCE\/RPC implement\u00e1ci\u00f3j\u00e1ban, amelyet a felhaszn\u00e1l\u00f3i \u00e9s csoportadatok kezel\u00e9s\u00e9re haszn\u00e1lnak. A probl\u00e9ma a f\u00e1jlmegoszt\u00f3kat \u00e9rinti <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/\" title=\"szerverek\" data-wpil-keyword-link=\"linked\">szerverek<\/a> \u00e9s a klasszikus domain vez\u00e9rl\u0151ket (nem Active Directory), amelyek a samba-dcerpcd folyamatot rendszer szolg\u00e1ltat\u00e1sk\u00e9nt futtatj\u00e1k (alap\u00e9rtelmez\u00e9s szerint nem fut) \u00e9s a smb.conf-ban a \"check password script\" be\u00e1ll\u00edt\u00e1s \u00e1ltal megadott jelsz\u00f3ellen\u0151rz\u0151 skriptet haszn\u00e1lj\u00e1k a \"%u\" helyettes\u00edt\u0151 karakter haszn\u00e1lat\u00e1val a parancs v\u00e9grehajt\u00e1sakor (a \"%u\" helyettes\u00edt\u0151 karaktert nem alkalmaz\u00f3 konfigur\u00e1ci\u00f3n\u00e1l a probl\u00e9ma nem \u00e1ll fenn).\n<p>A s\u00e9r\u00fcl\u00e9kenys\u00e9g abb\u00f3l ad\u00f3dik, hogy a SamValidatePasswordChange \u00e9s SamValidatePasswordReset RPC szolg\u00e1ltat\u00e1sok a felhaszn\u00e1l\u00f3nevet \u00e9s jelsz\u00f3t a \"check password script\" be\u00e1ll\u00edt\u00e1son kereszt\u00fcl megadott skriptre b\u00edzz\u00e1k an\u00e9lk\u00fcl, hogy a k\u00fcl\u00f6nleges karaktereket megfelel\u0151en kisz\u0171rn\u00e9k a felhaszn\u00e1l\u00f3n\u00e9v \"%u\" helyettes\u00edt\u00e9sekor. A s\u00e9r\u00fcl\u00e9kenys\u00e9g lehet\u0151v\u00e9 teszi tetsz\u0151leges shell parancsok v\u00e9grehajt\u00e1s\u00e1t <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-dronten\/\" title=\"szerveren\" data-wpil-keyword-link=\"linked\">szerveren<\/a> ha megfelel\u0151en form\u00e1zott felhaszn\u00e1l\u00f3nevet adunk meg. A v\u00e9delem egy alternat\u00edv m\u00f3dja, ha a felhaszn\u00e1l\u00f3i nevet nem a \"%u\" helyettes\u00edt\u00e9ssel, hanem a SAMBA_CPS_ACCOUNT_NAME k\u00f6rnyezeti v\u00e1ltoz\u00f3n kereszt\u00fcl adjuk \u00e1t a skripthez.<\/p>\n<li class=\"l\"> CVE-2026-4480 \u2014 s\u00e9r\u00fcl\u00e9kenys\u00e9g a nyomtat\u00e1si szerverben, amely a \"print command\" be\u00e1ll\u00edt\u00e1st a \"%J\" helyettes\u00edt\u0151 karakterrel haszn\u00e1lja. A probl\u00e9ma abb\u00f3l ad\u00f3dik, hogy a felhaszn\u00e1l\u00f3 \u00e1ltal megadott nyomtat\u00e1si le\u00edr\u00e1s a \"%J\" helyettes\u00edt\u0151 karakteren kereszt\u00fcl \u00e1tad\u00e1sra ker\u00fcl, an\u00e9lk\u00fcl, hogy a k\u00fcl\u00f6nleges karaktereket megfelel\u0151en kisz\u0171rn\u00e9k, lehet\u0151v\u00e9 t\u00e9ve ezzel saj\u00e1t k\u00f3dunk t\u00e1voli v\u00e9grehajt\u00e1s\u00e1t a nyomtat\u00e1si feladat elk\u00fcld\u00e9sekor, bele\u00e9rtve az alap\u00e9rtelmezett vend\u00e9g m\u00f3don el\u00e9rhet\u0151 nyomtat\u00e1st is. A v\u00e9delem egy alternat\u00edv m\u00f3dja a \"%J\" helyettes\u00edt\u0151 elt\u00e1vol\u00edt\u00e1sa<br \/>\na \"print command\" smb.conf be\u00e1ll\u00edt\u00e1s\u00e1b\u00f3l.<\/p>\n<\/ul>\n<p>Tov\u00e1bb\u00e1 az \u00faj verzi\u00f3kban sz\u00e1mos m\u00e1s s\u00e9r\u00fcl\u00e9kenys\u00e9get is kijav\u00edtottak, amelyek lehet\u0151v\u00e9 tett\u00e9k a hozz\u00e1f\u00e9r\u00e9si jogok ellen\u0151rz\u00e9s\u00e9nek megker\u00fcl\u00e9s\u00e9t az xattr-attrib\u00fatum \"reparse point\"-on, a f\u00e1jl m\u00e1sodszori fel\u00fcl\u00edr\u00e1s\u00e1t a WORM (Write-Once, Read Many) vfs modul haszn\u00e1lat\u00e1val, a tan\u00fas\u00edtv\u00e1ny HTTP-n t\u00f6rt\u00e9n\u0151 telep\u00edt\u00e9s\u00e9t ellen\u0151rz\u00e9s n\u00e9lk\u00fcl, \u00e9s a kimenet v\u00e1ratlan le\u00e1ll\u00edt\u00e1s\u00e1t. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-los-angeles\/\" title=\"a szerver\" data-wpil-keyword-link=\"linked\">a szerver<\/a> AD DC WINS speci\u00e1lis UDP-csomag k\u00fcld\u00e9s\u00e9n kereszt\u00fcl.<br \/>\n<br \/>Forr\u00e1s: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65545\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0440\u0435\u043b\u0438\u0437\u044b \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.24.3, 4.23.8 \u0438 4.22.10, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 SMB \u0438 Active Directory. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 6 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0434\u0432\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u043c\u0443 \u043d\u0435\u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0441\u0432\u043e\u0439 \u043a\u043e\u0434 \u043d\u0430 \u0441\u0435\u0440\u0432\u0435\u0440\u0435: CVE-2026-4408 &#8212; \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 SAMR (Security Account Manager) \u043f\u043e\u0432\u0435\u0440\u0445 DCE\/RPC, \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0434\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0443\u0447\u0451\u0442\u043d\u044b\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0438 \u0411\u0414 c [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181775","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0440\u0435\u043b\u0438\u0437\u044b 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protokollokhoz.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimosti-v-samba-dopuskayushhie-udalyonnoe-vypolnenie-koda-v-redkih-konfiguracziyah","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 Samba, \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u044e\u0449\u0438\u0435 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430 \u0432 \u0440\u0435\u0434\u043a\u0438\u0445 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u044f\u0445 | ProHoster","og:description":"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0440\u0435\u043b\u0438\u0437\u044b \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.24.3, 4.23.8 \u0438 4.22.10, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0433\u043e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u043e\u0432 SMB \u0438 Active 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