{"id":"UBUNTU-CVE-2018-12015","details":"In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a directory-traversal protection mechanism, and overwrite arbitrary files, via an archive file containing a symlink and a regular file with the same name.","modified":"2026-01-30T02:16:03.618019Z","published":"2018-06-07T00:00:00Z","related":["USN-3684-1","USN-3684-2"],"upstream":["CVE-2018-12015"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-12015"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3684-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3684-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-12015"}],"affected":[{"package":{"name":"perl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.6?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.18.2-2ubuntu1.6"}]}],"versions":["5.14.2-21build1","5.18.1-4","5.18.1-4build1","5.18.1-5","5.18.2-2","5.18.2-2ubuntu1","5.18.2-2ubuntu1.1","5.18.2-2ubuntu1.3","5.18.2-2ubuntu1.4"],"ecosystem_specific":{"binaries":[{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"libcgi-fast-perl"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"libperl-dev"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"libperl5.18"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"perl"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"perl-base"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"perl-debug"},{"binary_version":"5.18.2-2ubuntu1.6","binary_name":"perl-modules"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12015.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/perl@5.22.1-9ubuntu0.5?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.22.1-9ubuntu0.5"}]}],"versions":["5.20.2-6","5.22.1-3","5.22.1-4","5.22.1-5","5.22.1-7","5.22.1-8","5.22.1-9","5.22.1-9ubuntu0.2","5.22.1-9ubuntu0.3"],"ecosystem_specific":{"binaries":[{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"libperl-dev"},{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"libperl5.22"},{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"perl"},{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"perl-base"},{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"perl-debug"},{"binary_version":"5.22.1-9ubuntu0.5","binary_name":"perl-modules-5.22"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12015.json"}},{"package":{"name":"perl","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/perl@5.26.1-6ubuntu0.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.26.1-6ubuntu0.1"}]}],"versions":["5.26.0-8ubuntu1","5.26.1-2ubuntu1","5.26.1-3","5.26.1-4","5.26.1-4build1","5.26.1-5","5.26.1-6"],"ecosystem_specific":{"binaries":[{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"libperl-dev"},{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"libperl5.26"},{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"perl"},{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"perl-base"},{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"perl-debug"},{"binary_version":"5.26.1-6ubuntu0.1","binary_name":"perl-modules-5.26"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12015.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}