{"id":"CVE-2018-6556","details":"lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.","modified":"2026-02-21T00:52:45.826891Z","published":"2018-08-10T15:29:01.297Z","related":["openSUSE-SU-2019:1227-1","openSUSE-SU-2019:1230-1","openSUSE-SU-2019:1275-1","openSUSE-SU-2024:11030-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html"},{"type":"ADVISORY","url":"https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201808-02"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/usn/usn-3730-1"},{"type":"REPORT","url":"https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591"},{"type":"REPORT","url":"https://bugzilla.suse.com/show_bug.cgi?id=988348"},{"type":"FIX","url":"https://bugzilla.suse.com/show_bug.cgi?id=988348"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00074.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00076.html"},{"type":"ARTICLE","url":"http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00091.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/lxc/lxc","events":[{"introduced":"5b66b6ee3e3cd2575a4b9b2eb8190b2b05ab4b42"},{"fixed":"56fb4efa7a2f2e45b46177785e1fa62978e3ff34"}]}],"versions":["lxc-3.0.0","lxc-3.0.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-6556.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}