Candidate: CVE-2020-8907
PublicDate: 2020-06-22 14:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8907
 https://cloud.google.com/support/bulletins/#gcp-2020-008
 https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29
 https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020
Description:
 A vulnerability in Google Cloud Platform's guest-oslogin versions between
 20190304 and 20200507 allows a user that is only granted the role
 "roles/compute.osLogin" to escalate privileges to root. Using their
 membership to the "docker" group, an attacker with this role is able to run
 docker and mount the host OS. Within docker, it is possible to modify the
 host OS filesystem and modify /etc/groups to gain administrative
 privileges. All images created after 2020-May-07 (20200507) are fixed, and
 if you cannot update, we recommend you edit /etc/group/security.conf and
 remove the "docker" user from the OS Login entry.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H [7.8 HIGH]


Patches_gce-compute-image-packages:
upstream_gce-compute-image-packages: needs-triage
precise/esm_gce-compute-image-packages: DNE
trusty_gce-compute-image-packages: ignored (out of standard support)
trusty/esm_gce-compute-image-packages: needed
xenial_gce-compute-image-packages: released (20190801-0ubuntu1~16.04.1)
bionic_gce-compute-image-packages: released (20190801-0ubuntu1~18.04.1)
eoan_gce-compute-image-packages: released (20190801-0ubuntu1.1)
focal_gce-compute-image-packages: released (20190801-0ubuntu4.1)
groovy_gce-compute-image-packages: released (20190801-0ubuntu5)
hirsute_gce-compute-image-packages: released (20190801-0ubuntu5)
impish_gce-compute-image-packages: released (20190801-0ubuntu5)
jammy_gce-compute-image-packages: released (20190801-0ubuntu5)
devel_gce-compute-image-packages: released (20190801-0ubuntu5)