{"id":104724,"date":"2022-07-28T15:36:38","date_gmt":"2022-07-28T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu"},"modified":"2022-07-28T15:36:38","modified_gmt":"2022-07-28T13:36:38","slug":"uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","title":{"rendered":"Sebezhet\u0151s\u00e9g a Samba-ban, amely lehet\u0151v\u00e9 teszi b\u00e1rmely felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra a jelsz\u00f3 megv\u00e1ltoztat\u00e1s\u00e1t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Megjelent a Samba 4.16.4, 4.15.9 \u00e9s 4.14.14 hibajav\u00edt\u00f3 kiad\u00e1sa, amely 5 sebezhet\u0151s\u00e9get orvosol. A csomagfriss\u00edt\u00e9sek megjelen\u00e9s\u00e9t a disztrib\u00faci\u00f3k oldalain lehet nyomon k\u00f6vetni: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD.    <\/p>\n<p>A legvesz\u00e9lyesebb sebezhet\u0151s\u00e9g (CVE-2022-32744) lehet\u0151v\u00e9 teszi az Active Directory domain felhaszn\u00e1l\u00f3i sz\u00e1m\u00e1ra, hogy megv\u00e1ltoztass\u00e1k b\u00e1rmely felhaszn\u00e1l\u00f3 jelszav\u00e1t, bele\u00e9rtve az adminisztr\u00e1tor jelszav\u00e1nak megv\u00e1ltoztat\u00e1s\u00e1t is, ami teljes ellen\u0151rz\u00e9st biztos\u00edt a domain felett. A probl\u00e9ma abb\u00f3l fakad, hogy a KDC b\u00e1rmilyen ismert kulccsal titkos\u00edtott kpasswd lek\u00e9rdez\u00e9seket fogad el.     <\/p>\n<p>A k\u00e1rt\u00e9kony felhaszn\u00e1l\u00f3, aki hozz\u00e1f\u00e9r\u00e9ssel rendelkezik  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/domain\/\"   title=\"domain\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1234\">domain<\/a>, elk\u00fcldhet egy hamis jelsz\u00f3-vissza\u00e1ll\u00edt\u00f3 k\u00e9r\u00e9st egy m\u00e1sik felhaszn\u00e1l\u00f3 nev\u00e9ben, titkos\u00edtva azt a saj\u00e1t kulcs\u00e1val, \u00e9s a KDC feldolgozza an\u00e9lk\u00fcl, hogy ellen\u0151rizn\u00e9 a fi\u00f3k kulcs\u00e1nak megfelel\u0151ss\u00e9g\u00e9t. A hamis k\u00e9r\u00e9sek k\u00fcld\u00e9s\u00e9re olyan tartom\u00e1nyvez\u00e9rl\u0151k kulcsai is felhaszn\u00e1lhat\u00f3k, amelyek csak olvas\u00e1si m\u00f3dban (RODC) m\u0171k\u00f6dnek, \u00e9s nem rendelkeznek jelsz\u00f3v\u00e1ltoztat\u00e1si jogokkal. A v\u00e9delem megker\u00fcl\u00e9s\u00e9nek egyik m\u00f3dja a kpasswd protokoll t\u00e1mogat\u00e1s\u00e1nak letilt\u00e1sa a smb.conf f\u00e1jlba a \u201ekpasswd port = 0\u201d sor hozz\u00e1ad\u00e1s\u00e1val.    <\/p>\n<p>Egy\u00e9b sebezhet\u0151s\u00e9gek:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-32746 \u2014 Az Active Directory felhaszn\u00e1l\u00f3i el\u0151re form\u00e1zott LDAP \u201eadd\u201d vagy \u201emodify\u201d k\u00e9r\u00e9seket k\u00fcldve mem\u00f3ria ut\u00e1n szabadra (use-after-free) t\u00f6rt\u00e9n\u0151 hivatkoz\u00e1st ind\u00edthatnak a kiszolg\u00e1l\u00f3 folyamatban. A probl\u00e9ma abb\u00f3l ad\u00f3dik, hogy a napl\u00f3z\u00e1si modul hivatkozik az LDAP \u00fczenet tartalm\u00e1ra, miut\u00e1n az adatb\u00e1zis-kezel\u0151 modul felszabad\u00edtotta az \u00fczenethez rendelt mem\u00f3ri\u00e1t. A t\u00e1mad\u00e1s v\u00e9grehajt\u00e1s\u00e1hoz jogok sz\u00fcks\u00e9gesek bizonyos, p\u00e9ld\u00e1ul userAccountControl, privilegiz\u00e1lt attrib\u00fatumok hozz\u00e1ad\u00e1s\u00e1ra vagy m\u00f3dos\u00edt\u00e1s\u00e1ra.\n<li class=\"l\"> CVE-2022-2031 \u2014 Az Active Directory felhaszn\u00e1l\u00f3i megker\u00fclhetik egyes korl\u00e1toz\u00e1sokat a tartom\u00e1nyvez\u00e9rl\u0151n. A KDC \u00e9s a kpasswd szolg\u00e1ltat\u00e1s k\u00e9pes egym\u00e1s jegyeit visszafejteni, mivel k\u00f6z\u00f6sen haszn\u00e1lnak egy kulcsgarnit\u00far\u00e1t \u00e9s felhaszn\u00e1l\u00f3i fi\u00f3kokat. Ennek megfelel\u0151en a jelsz\u00f3v\u00e1ltoz\u00e1st k\u00e9r\u0151 felhaszn\u00e1l\u00f3 haszn\u00e1lhatja a megszerzett jegyet m\u00e1s szolg\u00e1ltat\u00e1sokhoz val\u00f3 hozz\u00e1f\u00e9r\u00e9sre.\n<li class=\"l\"> CVE-2022-32745 \u2014 Az Active Directory felhaszn\u00e1l\u00f3i le\u00e1ll\u00edthatj\u00e1k a kiszolg\u00e1l\u00f3 folyamatot LDAP \u201eadd\u201d vagy \u201emodify\u201d k\u00e9r\u00e9sek k\u00fcld\u00e9s\u00e9vel, amelyek nem inicializ\u00e1lt adatokra hivatkoznak.\n<li class=\"l\"> CVE-2022-32742 \u2014 Inform\u00e1ci\u00f3sziv\u00e1rg\u00e1s a mem\u00f3ria tartalm\u00e1r\u00f3l <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-los-angeles\/\"   title=\"a szerver\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3841\">a szerver<\/a> az SMB1 protokoll manipul\u00e1ci\u00f3j\u00e1n kereszt\u00fcl. Az SMB1 kliens, amelynek \u00edr\u00e1si joga van a megosztott t\u00e1rol\u00f3hoz, olyan felt\u00e9teleket teremthet, amelyek lehet\u0151v\u00e9 teszik a kiszolg\u00e1l\u00f3 folyamat mem\u00f3ria tartalm\u00e1nak r\u00e9szleteinek f\u00e1jlba \u00edr\u00e1s\u00e1t vagy nyomtat\u00f3ra k\u00fcld\u00e9s\u00e9t. A t\u00e1mad\u00e1s egy \u201ewrite\u201d k\u00e9r\u00e9s elk\u00fcld\u00e9s\u00e9vel val\u00f3sul meg helytelen tartom\u00e1ny megad\u00e1s\u00e1val. A probl\u00e9ma csak a Samba 4.11 el\u0151tti \u00e1gainak vonatkozik (a 4.11 \u00e1gban az SMB1 t\u00e1mogat\u00e1sa alap\u00e9rtelmez\u00e9s szerint le van tiltva).                 <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57565\">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 Samba 4.16.4, 4.15.9 \u0438 4.14.14 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c 5 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412\u044b\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 \u043c\u043e\u0436\u043d\u043e \u043f\u0440\u043e\u0441\u043b\u0435\u0434\u0438\u0442\u044c \u043d\u0430 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u0430\u0445: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD. \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-2022-32744) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c \u0434\u043e\u043c\u0435\u043d\u0430 Active Directory \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u044c \u043b\u044e\u0431\u043e\u0433\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u043c\u043e\u0436\u043d\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u0442\u044c \u043f\u0430\u0440\u043e\u043b\u044c \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430 \u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u043e\u043b\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c \u043d\u0430\u0434 \u0434\u043e\u043c\u0435\u043d\u043e\u043c. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 [&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-104724","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=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b 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