{"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\/ro\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","title":{"rendered":"O vulnerabilitate \u00een Samba, care permite oric\u0103rui utilizator s\u0103 schimbe parola","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Au fost publicate actualiz\u0103rile corective pentru pachetele Samba 4.16.4, 4.15.9 \u0219i 4.14.14, care rezolv\u0103 5 vulnerabilit\u0103\u021bi. Lansarea actualiz\u0103rilor pachetelor \u00een distribu\u021bii poate fi urm\u0103rit\u0103 pe paginile: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD.    <\/p>\n<p>Cea mai periculoas\u0103 vulnerabilitate (CVE-2022-32744) permite utilizatorilor de domeniu Active Directory s\u0103 schimbe parola oric\u0103rui utilizator, inclusiv parola administratorului, \u0219i s\u0103 ob\u021bin\u0103 control deplin asupra domeniului. Problema este cauzat\u0103 de faptul c\u0103 KDC accept\u0103 cereri kpasswd, criptate cu orice cheie cunoscut\u0103.     <\/p>\n<p>Un atacator care are acces la  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/domain\/\"   title=\"domeniu\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1234\">domeniu<\/a>, poate trimite o solicitare fals\u0103 de resetare a parolei \u00een numele unui alt utilizator, cript\u00e2nd-o cu cheia sa, iar KDC o va procesa f\u0103r\u0103 a verifica coresponden\u021ba cheii contului. Inclusiv pentru a trimite solicit\u0103ri false pot fi folosite chei de controlere de domeniu care func\u021bioneaz\u0103 doar \u00een mod de citire (RODC), care nu au autoritate pentru schimbarea parolelor. Ca o m\u0103sur\u0103 de protec\u021bie, se poate dezactiva suportul pentru protocolul kpasswd, ad\u0103ug\u00e2nd \u00een smb.conf linia &#171;kpasswd port = 0&#187;.    <\/p>\n<p>Alte vulnerabilit\u0103\u021bi:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-32746 &#8212; utilizatorii Active Directory pot ini\u021bia accesarea memoriei dup\u0103 eliberare (use-after-free) \u00een procesul serverului prin trimiterea de cereri LDAP formate special &#171;add&#187; sau &#171;modify&#187;. Problema este cauzat\u0103 de faptul c\u0103 modulul pentru \u00eenregistrarea auditului acceseaz\u0103 con\u021binutul mesajului LDAP dup\u0103 ce modulul de gestionare a bazei de date elibereaz\u0103 memoria alocat\u0103 pentru mesaj. Pentru a efectua atacul, este necesar\u0103 existen\u021ba drepturilor de a ad\u0103uga sau modifica anumite atribute privilegiate, cum ar fi userAccountControl.\n<li class=\"l\"> CVE-2022-2031 &#8212; utilizatorii Active Directory pot o ocoli anumite restric\u021bii \u00een controlerul de domeniu. KDC \u0219i serviciul kpasswd au capacitatea de a decripta ticheturile unul altuia, deoarece folosesc un set comun de chei \u0219i conturi. \u00cen consecin\u021b\u0103, un utilizator care solicit\u0103 schimbarea parolei poate folosi biletul ob\u021binut pentru a accesa alte servicii.\n<li class=\"l\"> CVE-2022-32745 &#8212; utilizatorii Active Directory pot cauza \u00eenchiderea nea\u0219teptat\u0103 a procesului serverului prin trimiterea de cereri LDAP &#171;add&#187; sau &#171;modify&#187;, care duc la accesarea datelor neini\u021bializate.\n<li class=\"l\"> CVE-2022-32742 &#8212; scurgerea de informa\u021bii despre con\u021binutul memoriei <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3841\">server<\/a> prin manipularea protocolului SMB1. Un client SMB1, av\u00e2nd drept de scriere \u00een stocarea partajat\u0103, poate crea condi\u021bii pentru a scrie fragmente de con\u021binut al memoriei procesului serverului \u00eentr-un fi\u0219ier sau a le trimite la imprimant\u0103. Atacul se realizeaz\u0103 prin trimiterea unei cereri &#171;write&#187; cu un interval incorect specificat. Problema afecteaz\u0103 doar ramurile Samba \u00eenainte de 4.11 (\u00een ramura 4.11 suportul SMB1 este dezactivat implicit).                 <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57565\">opennet.ro<\/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 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b 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