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VULNERABILITIES

CVE-2020-8933 Details

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 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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html CVEMailing ListThird Party Advisory
https://cloud.google.com/support/bulletins/#gcp-2020-008 CVEVendor Advisory
https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29 CVEPatchThird Party Advisory
https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020 CVEExploitThird Party Advisory

see all 10 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-276Incorrect Default Permissions[email protected]
CWE-276Incorrect Default Permissions[email protected]

Affected Products

ProductVersions
google guest-oslogin
>= 20190304.00, <= 20200507.00

CPE

  • cpe:2.3:a:google:guest-oslogin:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
opensuse leap
15.1
15.2

CPE

  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-8933
NVD Published Date:
Jun 22, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2020-8933 Details - Not Deferred