7.8
CVSSv3

CVE-2020-8907

Published: 22/06/2020 Updated: 30/09/2022
CVSS v2 Base Score: 6.9 | Impact Score: 10 | Exploitability Score: 3.4
CVSS v3 Base Score: 7.8 | Impact Score: 5.9 | Exploitability Score: 1.8
VMScore: 614
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Summary

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.

Vulnerability Trend

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google guest-oslogin

opensuse leap 15.1

opensuse leap 15.2

Vendor Advisories

Debian Bug report logs - #987353 CVE-2020-8903 CVE-2020-8907 CVE-2020-8933 Package: src:google-compute-image-packages; Maintainer for src:google-compute-image-packages is Debian Cloud Team <debian-cloud@listsdebianorg>; Reported by: Moritz Muehlenhoff <jmm@debianorg> Date: Thu, 22 Apr 2021 08:48:02 UTC Severity: g ...