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 the membership to the "lxd" group, an attacker can attach host devices and filesystems. Within an lxc container, it is possible to attach the host OS filesystem and modify /etc/sudoers to then 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 "lxd" user from the OS Login entry.
References
Link | Resource |
---|---|
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html | Mailing List Third Party Advisory |
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html | Mailing List Third Party Advisory |
https://cloud.google.com/support/bulletins/#gcp-2020-008 | Vendor Advisory |
https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29 | Patch Third Party Advisory |
https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020 | Exploit Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: Google
Published: 2020-06-22T13:45:26
Updated: 2024-06-04T17:12:15.190Z
Reserved: 2020-02-12T00:00:00
Link: CVE-2020-8933
JSON object: View
NVD Information
Status : Modified
Published: 2020-06-22T14:15:11.847
Modified: 2024-05-21T05:15:50.890
Link: CVE-2020-8933
JSON object: View
Redhat Information
No data.
CWE