CVE-2020-8933

Priviged Escalation in Google Cloud Platform's Guest-OSLogin

Published: Jun 22, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-276

7.8HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-276

Affected Products

Google LLC

commercial·US

guest-osloginOn-prem

Security Products / identity-access-mgmt

Novell Inc.

commercial·US

OpenSUSE LeapOn-premOS

Operating Systems / linux-distro

Google Inc

commercial·USaka google, google llc

guest-osloginOn-premOS

Operating Systems / linux-distro

opensuse

oss-project·DE

leapOn-premOS

Operating Systems / linux-distro

and 1 more affected products View all →

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29

github.com

https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020

gitlab.com

https://cloud.google.com/support/bulletins/#gcp-2020-008

cloud.google.com

and 2 more references View all →

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