{"id":"UBUNTU-CVE-2015-8768","details":"click/install.py in click does not require files in package filesystem tarballs to start with ./ (dot slash), which allows remote attackers to install an alternate security policy and gain privileges via a crafted package, as demonstrated by the test.mmrow app for Ubuntu phone.","modified":"2026-04-22T10:23:10.282747Z","published":"2017-02-13T18:59:00Z","related":["USN-2771-1"],"upstream":["CVE-2015-8768"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-8768"},{"type":"REPORT","url":"https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2771-1"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/01/11/8"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-8768"}],"affected":[{"package":{"name":"click","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/click@0.4.21.1ubuntu0.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.21.1ubuntu0.2"}]}],"versions":["0.4.11","0.4.12","0.4.13","0.4.14","0.4.15","0.4.16","0.4.17.2","0.4.18.1","0.4.18.3","0.4.19","0.4.20","0.4.21.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"click","binary_version":"0.4.21.1ubuntu0.2"},{"binary_name":"gir1.2-click-0.4","binary_version":"0.4.21.1ubuntu0.2"},{"binary_name":"libclick-0.4-0","binary_version":"0.4.21.1ubuntu0.2"},{"binary_name":"packagekit-plugin-click","binary_version":"0.4.21.1ubuntu0.2"},{"binary_name":"python3-click","binary_version":"0.4.21.1ubuntu0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-8768.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"critical"}]}