{"id":73477,"date":"2020-03-10T02:42:04","date_gmt":"2020-03-09T23:42:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme"},"modified":"2020-03-10T02:42:04","modified_gmt":"2020-03-09T23:42:04","slug":"uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","title":{"rendered":"Luka w Timeshift, kt\u00f3ra umo\u017cliwia podniesienie swoich uprawnie\u0144 w systemie","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>W aplikacji <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/teejee2008\/timeshift\">Timeshift<\/a><\/noindex> wykryto <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2020\/03\/06\/3\">luka<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/security-tracker.debian.org\/tracker\/CVE-2020-10174\">CVE-2020-10174<\/a><\/noindex>), umo\u017cliwiaj\u0105ca lokalnemu u\u017cytkownikowi wykonanie kodu z uprawnieniami root. Timeshift to system tworzenia kopii zapasowych, korzystaj\u0105cy z rsync z instalacj\u0105 twardych link\u00f3w lub migawkami Btrfs, oferuj\u0105cy funkcjonalno\u015b\u0107 podobn\u0105 do Przywracania systemu w Windows oraz Time Machine w macOS. Program jest dost\u0119pny w repozytoriach wielu dystrybucji i jest stosowany domy\u015blnie w PCLinuxOS oraz Linux Mint. Luka zosta\u0142a usuni\u0119ta w wydaniu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/teejee2008\/timeshift\/releases\/tag\/v20.03\">Timeshift 20.03<\/a><\/noindex>.<\/p>\n<p>Problem jest spowodowany nieprawid\u0142owym dzia\u0142aniem z publicznym katalogiem \/tmp. Podczas tworzenia kopii zapasowej program tworzy katalog \/tmp\/timeshift, w kt\u00f3rym powstaje podkatalog z losow\u0105 nazw\u0105, zawieraj\u0105cy skrypt pow\u0142oki z poleceniami uruchamianymi z uprawnieniami root. Podkatalog ze skryptem ma nieprzewidywaln\u0105 nazw\u0119, ale sam \/tmp\/timeshift jest przewidywalny i nie jest sprawdzany pod k\u0105tem podmiany ani utworzenia w jego miejsce dowi\u0105zania symbolicznego. Atakuj\u0105cy mo\u017ce utworzy\u0107 katalog \/tmp\/timeshift pod swoim nazwiskiem, po czym \u015bledzi\u0107 pojawienie si\u0119 podkatalogu i podmieni\u0107 ten podkatalog oraz plik w nim. W trakcie dzia\u0142ania Timeshift wykona skrypt nie wygenerowany przez program, a plik podmieniony przez atakuj\u0105cego z uprawnieniami root.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52509\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-10174), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root. Timeshift \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0433\u043e \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0443\u044e rsync \u0441 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u043e\u0439 \u0436\u0451\u0441\u0442\u043a\u0438\u0445 \u0441\u0441\u044b\u043b\u043e\u043a \u0438\u043b\u0438 \u0441\u043d\u0430\u043f\u0448\u043e\u0442\u044b Btrfs \u0434\u043b\u044f \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u043f\u043e\u0445\u043e\u0436\u0435\u0439 \u043d\u0430 System Restore \u0432 Windows \u0438 Time Machine \u0432 macOS. \u041f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u0432\u0445\u043e\u0434\u0438\u0442 \u0432 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u043c\u043d\u043e\u0433\u0438\u0445 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u043e\u0432 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432 PCLinuxOS [&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-73477","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=\"\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"pl_PL\" \/>\n\t\t<meta property=\"og:site_name\" content=\"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\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Timeshift, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"350\" \/>\n\t\t<meta property=\"og:image:height\" content=\"350\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2020-03-09T23:42:04+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2020-03-09T23:42:04+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/prohoster\" \/>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\ud83e\udd47Luka w Timeshift, umo\u017cliwiaj\u0105ca podwy\u017cszenie swoich przywilej\u00f3w w systemie | ProHoster","description":"W aplikacji Timeshift odkryto","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","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\u044c \u0432 Timeshift, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 | ProHoster","og:description":"\u0412 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 Timeshift \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430","og:url":"https:\/\/prohoster.info\/pl\/blog\/news\/uyazvimost-v-timeshift-pozvolyayushhaya-podnyat-svoi-privilegii-v-sisteme","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2020-03-09T23:42:04+00:00","article:modified_time":"2020-03-09T23:42:04+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"73477","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":null,"schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2021-02-28 18:32:41","updated":"2022-10-08 07:43:00","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/73477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/comments?post=73477"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/73477\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/media?parent=73477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/categories?post=73477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/tags?post=73477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}