{"id":33114,"date":"2021-07-13T14:05:26","date_gmt":"2021-07-13T18:05:26","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=33114"},"modified":"2021-07-13T14:05:26","modified_gmt":"2021-07-13T18:05:26","slug":"teamviewer-local-privilege-escalation-vulnerability","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2021\/07\/13\/teamviewer-local-privilege-escalation-vulnerability\/","title":{"rendered":"TeamViewer Local Privilege Escalation Vulnerability"},"content":{"rendered":"<p><a href=\"https:\/\/theevilbit.github.io\/posts\/teamviewer_lpe\/\">Csaba Fitzl<\/a> (<a href=\"https:\/\/twitter.com\/theevilbit\/status\/1397792999648673799\">tweet<\/a>):<\/p>\n<blockquote cite=\"https:\/\/theevilbit.github.io\/posts\/teamviewer_lpe\/\"><p>This is a rather old vulnerability I found in TeamViewer back in 2020, and reported it through VCP\/iDefense. TeamViewer fixed the vulnerability last November[&#8230;]<\/p>\n<p>The TeamViewer macOS client used a PrivilegedHelperTool named <code>com.teamviewer.Helper<\/code> to perform specific tasks that require <code>root<\/code>\npermissions. Back in 2020 it used a deprecate model to perform IPC communication, called Distributed Objects. It was wide open, and any client could invoke the remote object&rsquo;s functions, and some of those lead to direct privilege escalation.<\/p><\/blockquote>\n\n<p>Previously:<\/p>\n<ul>\n<li><a href=\"https:\/\/mjtsai.com\/blog\/2020\/04\/20\/privileged-operations-on-macos\/\">Privileged Operations on macOS<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Csaba Fitzl (tweet): This is a rather old vulnerability I found in TeamViewer back in 2020, and reported it through VCP\/iDefense. TeamViewer fixed the vulnerability last November[&#8230;] The TeamViewer macOS client used a PrivilegedHelperTool named com.teamviewer.Helper to perform specific tasks that require root permissions. Back in 2020 it used a deprecate model to perform IPC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2021-07-13T18:05:30Z","apple_news_api_id":"9c37b1fe-baf7-4098-8780-f8ea970fa01a","apple_news_api_modified_at":"2021-07-13T18:05:30Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/AnDex_rr3QJiHgPjqlw-gGg","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[4],"tags":[2095,30,1891,71,48,1721],"class_list":["post-33114","post","type-post","status-publish","format-standard","hentry","category-programming-category","tag-exploit","tag-mac","tag-macos-11-0","tag-programming","tag-security","tag-teamviewer"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=33114"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33114\/revisions"}],"predecessor-version":[{"id":33115,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/33114\/revisions\/33115"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=33114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=33114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=33114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}