{"id":102262,"date":"2021-11-10T21:36:39","date_gmt":"2021-11-10T19:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-samba-ustraneno-8-opasnyh-uyazvimostej"},"modified":"2021-11-10T21:36:39","modified_gmt":"2021-11-10T19:36:39","slug":"v-samba-ustraneno-8-opasnyh-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/v-samba-ustraneno-8-opasnyh-uyazvimostej","title":{"rendered":"Sambas on k\u00f5rvaldatud 8 ohtlikku haavatavust","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Avaldatud on Samba paketid 4.15.2, 4.14.10 ja 4.13.14, mis sisaldavad 8 haavatavuse parandust, millest enamik v\u00f5ib viia Active Directory domeeni t\u00e4ieliku kompromiteerimiseni. Eriliselt tasub t\u00e4hele panna, et \u00fchte probleemidest on parandatud alates 2016. aastast ning viit on parandatud alates 2020. aastast, kuid \u00fcks parandustest p\u00f5hjustas winbindd k\u00e4ivitamise t\u00f5rke, kui seade \"allow trusted domains = no\" oli lubatud (arendajad kavatsevad kiiresti v\u00e4lja anda veel \u00fche uuenduse probleemi lahendamiseks). Pakettide uuenduste v\u00e4ljalaskmist jaotustes saab j\u00e4lgida lehtedel: Debian, Ubuntu, RHEL, SUSE, Fedora, Arch, FreeBSD.    <\/p>\n<p>K\u00fcsimused, mis on k\u00f5rvaldatud:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2020-25717 \u2014 lihtsuse halduse loogika t\u00f5ttu domeeni kasutajate ja kohalike s\u00fcsteemide kasutajate vahel, sai Active Directory domeeni kasutaja, kellel on v\u00f5imalik oma s\u00fcsteemis uusi kasutajakontosid luua, mida hallatakse l\u00e4bi ms-DS-MachineAccountQuota, juurdep\u00e4\u00e4su teistele s\u00fcsteemidele root\u00b4ina. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/domain\/\"   title=\"domeen\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4094\">domeen<\/a>.\n<li class=\"l\"> CVE-2021-3738 \u2014 juba vabastatud m\u00e4lupiirkonna kasutamine Samba AD DC RPC-serveri (dsdb) rakenduses, mis v\u00f5ib potentsiaalselt v\u00f5imaldada privileegide t\u00f5stmist \u00fchenduste loomise manipuleerimise kaudu.\n<li class=\"l\"> CVE-2016-2124 \u2014 klienditehingud, mis loodi kasutades SMB1 protokolli, v\u00f5isid viia autentimise parameetrite edastamise avatud tekstina v\u00f5i NTLM kaudu (n\u00e4iteks, et m\u00e4\u00e4rata kasutajakontosid MITM-r\u00fcnnakute ajal), isegi kui kasutaja v\u00f5i rakenduse seadetel on kehtestatud Kerberose kohustuslik autentimine.\n<li class=\"l\"> CVE-2020-25722 \u2014 Active Directory domeeni kontrollijale, mis p\u00f5hineb Samba, ei viidud l\u00e4bi korralikke juurdep\u00e4\u00e4su kontrollimist salvestatud andmete osas, mille tulemusena suudab iga kasutaja vabalt \u00fcle vaadata \u00f5iguste kontrolli ja t\u00e4ielikult domeeni kompromiteerida.\n<li class=\"l\"> CVE-2020-25718 \u2014 Active Directory domeeni kontrollijale, mis p\u00f5hineb Samba, ei eraldatud korralikult Kerberose piletid, mis on v\u00e4ljastatud RODC (lugemis\u00f5igusega domeinijuht), mis v\u00f5isid v\u00f5imaldada RODC-l saada administraatori pileteid, ilma vastava volituseta.\n<li class=\"l\"> CVE-2020-25719 \u2014 Active Directory domeeni kontroller Samba ei pruukinud alati arvesse v\u00f5tta SID ja PAC v\u00e4lju Kerboresi piletites (seade \"gensec:require_pac = true\" kontrollis ainult nime, PAC ei arvestatud), mis v\u00f5imaldas kohaliku s\u00fcsteemi kasutajal, kellel oli ette n\u00e4htud \u00f5iguste loomine, end teise domeeni kasutajana, sealhulgas privileegidega, esitada.\n<li class=\"l\"> CVE-2020-25721 \u2014 Kerboresi kaudu autentitud kasutajatele ei antud alati unikaalseid identifikaatoreid Active Directory jaoks (objectSid), mis v\u00f5is viia \u00fchte kasutajat teisega kattumiseni.\n<li class=\"l\"> CVE-2021-23192 \u2014 MITM-r\u00fcnnaku korral oli v\u00f5imalik DCE\/RPC suurte p\u00e4ringute fragmente, mis jagatakse mitmeks osaks, asendada.  <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56132\">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 4.15.2, 4.14.10 \u0438 4.13.14 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0433\u0443\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u043f\u043e\u043b\u043d\u043e\u0439 \u043a\u043e\u043c\u043f\u0440\u043e\u043c\u0435\u0442\u0430\u0446\u0438\u0438 \u0434\u043e\u043c\u0435\u043d\u0430 Active Directory. \u041f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e, \u0447\u0442\u043e \u043e\u0434\u043d\u0443 \u0438\u0437 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u044f\u043b\u0438 \u0441 2016 \u0433\u043e\u0434\u0430, \u0430 \u043f\u044f\u0442\u044c &#8212; \u0441 2020 \u0433\u043e\u0434\u0430, \u0442\u0435\u043c \u043d\u0435 \u043c\u0435\u043d\u0435\u0435 \u043e\u0434\u043d\u043e \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u0432\u0435\u043b\u043e \u043a \u043d\u0435\u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c winbindd \u043f\u0440\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u043d\u0430\u0441\u0442\u0440\u043e\u0439\u043a\u0438 &#171;allow trusted domains [&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-102262","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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 4.15.2, 4.14.10 \u0438 4.13.14 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c 8 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e 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