{"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\/sv\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-pomenyat-parol-lyubomu-polzovatelyu","title":{"rendered":"S\u00e5rbarhet i Samba som till\u00e5ter vilken anv\u00e4ndare som helst att \u00e4ndra sitt l\u00f6senord","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Korrigeringsutgivelser for Samba-pakkene 4.16.4, 4.15.9 og 4.14.14 har blitt publisert for \u00e5 fikse 5 s\u00e5rbarheter. Utgivelsen av pakkeoppdateringer i distribusjoner kan spores p\u00e5 sidene: Debian, Ubuntu, RHEL, SUSE, Arch, FreeBSD.    <\/p>\n<p>Den mest alvorlige s\u00e5rbarheten (CVE-2022-32744) lar brukere av Active Directory-domenet endre passordet til enhver bruker, inkludert administratorpassordet, og f\u00e5 full kontroll over domenet. Problemet oppst\u00e5r fordi KDC aksepterer kpasswd-foresp\u00f8rsler som er kryptert med hvilken som helst kjent n\u00f8kkel.     <\/p>\n<p>En angriper som har tilgang til  <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/domain\/\"   title=\"dom\u00e4n\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"1234\">dom\u00e4n<\/a>, kan skicka en falsk beg\u00e4ran om att \u00e5terst\u00e4lla ett nytt l\u00f6senord \u00e5 en annan anv\u00e4ndares v\u00e4gnar, kryptera den med sin egen nyckel, och KDC kommer att bearbeta den utan att kontrollera nyckens \u00f6verensst\u00e4mmelse med kontot. \u00c4ven nycklar fr\u00e5n dom\u00e4nkontrollanter som arbetar i skrivskyddat l\u00e4ge (RODC) utan beh\u00f6righet att \u00e4ndra l\u00f6senord kan anv\u00e4ndas f\u00f6r att skicka falska beg\u00e4ringar. Som en skydds\u00e5tg\u00e4rd kan st\u00f6d f\u00f6r kpasswd-protokollet inaktiveras genom att l\u00e4gga till raden &#171;kpasswd port = 0&#187; i smb.conf.    <\/p>\n<p>\u00d6vriga s\u00e5rbarheter:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2022-32746 &#8212; anv\u00e4ndare av Active Directory kan genom att skicka speciellt formulerade LDAP-beg\u00e4rningar &#171;add&#187; eller &#171;modify&#187; initiera en minnes\u00e5tkomst efter att det har frigjorts (use-after-free) i serverprocessen. Problemet orsakas av att modulen f\u00f6r loggning av revisioner refererar till inneh\u00e5llet i LDAP-meddelandet efter att databasmodulen har frigjort minnet avsett f\u00f6r meddelandet. F\u00f6r att utf\u00f6ra en attack kr\u00e4vs r\u00e4ttigheter att l\u00e4gga till eller modifiera vissa privilegierade attribut, s\u00e5som userAccountControl.\n<li class=\"l\"> CVE-2022-2031 &#8212; anv\u00e4ndare av Active Directory kan kringg\u00e5 vissa begr\u00e4nsningar i dom\u00e4nkontrollanten. KDC och kpasswd-tj\u00e4nsten har m\u00f6jlighet att dekryptera varandras biljetter eftersom de anv\u00e4nder en gemensam upps\u00e4ttning av nycklar och konton. D\u00e4rf\u00f6r kan en anv\u00e4ndare som beg\u00e4r en l\u00f6senords\u00e4ndring anv\u00e4nda den erh\u00e5llna biljetten f\u00f6r att f\u00e5 \u00e5tkomst till andra tj\u00e4nster.\n<li class=\"l\"> CVE-2022-32745 &#8212; anv\u00e4ndare av Active Directory kan orsaka att serverprocessen kraschar genom att skicka LDAP-beg\u00e4rningar &#171;add&#187; eller &#171;modify&#187;, vilket leder till att det refereras till oinitialiserade data.\n<li class=\"l\"> CVE-2022-32742 &#8212; l\u00e4cka av information om inneh\u00e5llet i minnet <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/sv\/server\/dts-los-angeles\/\"   title=\"servern\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3841\">servern<\/a> genom manipulation av SMB1-protokollet. En SMB1-klient med skrivr\u00e4ttigheter i en delad lagring kan skapa f\u00f6rh\u00e5llanden f\u00f6r att skriva fragment av minnesinneh\u00e5llet fr\u00e5n serverprocessen till en fil eller skicka till en skrivare. Attacken utf\u00f6rs genom att skicka en &#171;write&#187;-beg\u00e4ran med en ogiltig intervall. Problemet g\u00e4ller endast Samba-versioner f\u00f6re 4.11 (i version 4.11 \u00e4r st\u00f6d f\u00f6r SMB1 inaktiverat som standard).                 <\/ul>\n<p>K\u00e4lla: <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 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b 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