{"id":"CVE-2015-8768","aliases":["EUVD-2015-8640","GHSA-fgm2-j3wp-hrw5","UBUNTU-CVE-2015-8768","USN-2771-1"],"status":"published","title":"click/install.py in click does not require files in package filesystem tarballs to start with ./ ...","description":"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.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02746,"percentile":0.86285,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-264"],"published":"2015-10-15T20:08:03Z","modified":"2026-06-17T00:35:12Z","fixes":[{"ecosystem":"Ubuntu:14.04:LTS","package":"click","fixed_in":["0.4.21.1ubuntu0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"click","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"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"click","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"]}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"click_project","product":"click"}],"references":[{"url":"http://ubuntu.com/usn/usn-2771-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/96386","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://bazaar.launchpad.net/~click-hackers/click/devel/revision/587","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://bugs.launchpad.net/ubuntu/+source/click/+bug/1506467","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory"]},{"url":"https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue/","tags":["x_refsource_CONFIRM","x_transferred","report"]},{"url":"https://code.launchpad.net/~cjwatson/click/audit-missing-dot-slash/+merge/274554","tags":["x_refsource_CONFIRM","x_transferred","Issue Tracking","Patch","Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/01/12/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory"]},{"url":"https://plus.google.com/+SzymonWaliczek/posts/3jbG2uiAniF","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-8768"},{"url":"https://insights.ubuntu.com/2015/10/15/update-on-ubuntu-phone-security-issue"},{"url":"https://github.com/advisories/GHSA-fgm2-j3wp-hrw5"},{"url":"https://ubuntu.com/security/CVE-2015-8768","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-2771-1","tags":["advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/01/11/8","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-8768","tags":["report"]},{"url":"https://launchpad.net/bugs/1506467","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2015-8768","description":"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.","status":"published","published":"2017-02-13T18:00:00Z","modified":"2024-08-06T08:29:21.56Z","updated_at":"2026-11-02T14:35:40.900357Z"}],"euvd":[{"id":"EUVD-2015-8640","description":"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.","status":"published","published":"2017-02-13T18:00:00Z","modified":"2024-08-06T08:29:21Z","updated_at":"2026-11-03T01:57:25.869767Z"}],"ghsa":[{"id":"GHSA-fgm2-j3wp-hrw5","title":"click/install.py in click does not require files in package filesystem tarballs to start with ./ ...","description":"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.","status":"published","published":"2022-05-17T00:36:01Z","modified":"2025-04-20T03:33:44Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:01:40.757238Z"}],"nvd":[{"id":"CVE-2015-8768","description":"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.","status":"published","published":"2017-02-13T18:59:00.267Z","modified":"2026-06-17T00:35:12.473Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:03:16.97467Z"}],"osv":[{"id":"UBUNTU-CVE-2015-8768","description":"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.","status":"published","published":"2017-02-13T18:59:00Z","modified":"2026-04-22T10:23:10.282747Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:11.100633Z"},{"id":"USN-2771-1","title":"click vulnerability","description":"It was discovered that click did not properly perform input sanitization\nduring click package installation. If a user were tricked into installing a\ncrafted click package, a remote attacker could exploit this to escalate\nprivileges by tricking click into installing lenient security policy for\nthe installed application.\n","status":"published","published":"2015-10-15T20:08:03Z","modified":"2026-04-22T09:16:22.201331Z","updated_at":"2026-11-02T16:58:09.227524Z"}]}}