USN-4424-1: snapd vulnerabilities<\/p>\n
It was discovered that cloud-init as managed by snapd on Ubuntu Core 16 and
\nUbuntu Core 18 devices ran on every boot without restrictions. A physical
\nattacker could exploit this to craft cloud-init user-data\/meta-data via
\nexternal media to perform arbitrary changes on the device to bypass
\nintended security mechanisms such as full disk encryption. This issue did
\nnot affect traditional Ubuntu systems. (CVE-2020-11933)<\/p>\n
It was discovered that snapctl user-open allowed altering the XDG_DATA_DIRS USN-4424-1: snapd vulnerabilities It was discovered that cloud-init as managed by snapd on Ubuntu Core 16 and Ubuntu Core 18 devices ran on every boot without restrictions. A physical attacker could exploit this to craft cloud-init user-data\/meta-data via external media to perform arbitrary changes on the device to bypass intended security mechanisms such as full disk encryption. This issue did not affect traditional Ubuntu systems. (CVE-2020-11933) It was discovered that snapctl user-open allowed altering the XDG_DATA_DIRS environment variable when calling the system xdg-open. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL. This issue did not affect Ubuntu Core systems. (CVE-2020-11934) Source: USN-4424-1: snapd vulnerabilities<\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[586],"tags":[587],"class_list":["post-37651","post","type-post","status-publish","format-standard","hentry","category-ubuntu-usn","tag-ubuntu-usn"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/37651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/comments?post=37651"}],"version-history":[{"count":1,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/37651\/revisions"}],"predecessor-version":[{"id":37652,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/posts\/37651\/revisions\/37652"}],"wp:attachment":[{"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/media?parent=37651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/categories?post=37651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jirak.net\/wp\/wp-json\/wp\/v2\/tags?post=37651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nenvironment variable when calling the system xdg-open. A malicious snap
\ncould exploit this to bypass intended access restrictions to control how
\nthe host system xdg-open script opens the URL. This issue did not affect
\nUbuntu Core systems. (CVE-2020-11934)
\nSource: USN-4424-1: snapd vulnerabilities<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"