{"id":"CVE-2018-6552","details":"Apport does not properly handle crashes originating from a PID namespace allowing local users to create certain files as root which an attacker could leverage to perform a denial of service via resource exhaustion, possibly gain root privileges, or escape from containers. The is_same_ns() function returns True when /proc/\u003cglobal pid\u003e/ does not exist in order to indicate that the crash should be handled in the global namespace rather than inside of a container. However, the portion of the data/apport code that decides whether or not to forward a crash to a container does not always replace sys.argv[1] with the value stored in the host_pid variable when /proc/\u003cglobal pid\u003e/ does not exist which results in the container pid being used in the global namespace. This flaw affects versions 2.20.8-0ubuntu4 through 2.20.9-0ubuntu7, 2.20.7-0ubuntu3.7, 2.20.7-0ubuntu3.8, 2.20.1-0ubuntu2.15 through 2.20.1-0ubuntu2.17, and 2.14.1-0ubuntu3.28.","modified":"2026-03-14T09:30:09.493304Z","published":"2018-05-31T22:29:00.207Z","references":[{"type":"ADVISORY","url":"https://usn.ubuntu.com/3664-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/usn/usn-3664-1"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"2.14.1"}]},{"events":[{"introduced":"0"},{"last_affected":"2.20.9"}]},{"events":[{"introduced":"0"},{"last_affected":"2.20.7"}]},{"events":[{"introduced":"0"},{"last_affected":"2.20.1"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6552.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}