PublicDateAtUSN: 2018-05-30 18:00:00 UTC
Candidate: CVE-2018-6552
CRD: 2018-05-30 18:00:00 UTC
PublicDate: 2018-05-31 22:29:00 UTC
References: 
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6552
 http://www.sbosnet.nl/
 https://ubuntu.com/security/notices/USN-3664-1
 https://ubuntu.com/security/notices/USN-3664-2
Description:
 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/<global pid>/ 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/<global pid>/ 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.
Ubuntu-Description: 
Notes: 
Bugs: 
 https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1746668
Priority: high
Discovered-by: Sander Bos
Assigned-to: mdeslaur
CVSS:
 nvd: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H [7.8 HIGH]

Patches_apport:
upstream_apport: needs-triage
precise/esm_apport: DNE
trusty_apport: released (2.14.1-0ubuntu3.29)
trusty/esm_apport: released (2.14.1-0ubuntu3.29)
xenial_apport: released (2.20.1-0ubuntu2.18)
esm-infra/xenial_apport: released (2.20.1-0ubuntu2.18)
artful_apport: released (2.20.7-0ubuntu3.9)
bionic_apport: released (2.20.9-0ubuntu7.1)
devel_apport:  released (2.20.10-0ubuntu3)