CVE-2020-8933
Publication date 22 June 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
gce-compute-image-packages | 25.04 plucky |
Fixed 20190801-0ubuntu5
|
24.10 oracular |
Fixed 20190801-0ubuntu5
|
|
24.04 LTS noble |
Fixed 20190801-0ubuntu5
|
|
22.04 LTS jammy |
Fixed 20190801-0ubuntu5
|
|
20.04 LTS focal |
Fixed 20190801-0ubuntu4.1
|
|
18.04 LTS bionic |
Fixed 20190801-0ubuntu1~18.04.1
|
|
16.04 LTS xenial |
Fixed 20190801-0ubuntu1~16.04.1
|
|
14.04 LTS trusty |
Vulnerable
|
Severity score breakdown
Parameter | Value |
---|---|
Base score |
|
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |