CVE-2020-8933
Google Cloud Platform GCE Guest-oslogin Privilege Escalation Vulnerability
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.
INFO
Published Date :
June 22, 2020, 2:15 p.m.
Last Modified :
Nov. 21, 2024, 5:39 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2020-8933 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-8933.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-8933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-8933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html Added Reference https://cloud.google.com/support/bulletins/#gcp-2020-008 Added Reference https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29 Added Reference https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020 -
CVE Modified by [email protected]
May. 21, 2024
Action Type Old Value New Value Removed CVSS V3.1 Google Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V4.0 Google Inc. CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Sep. 30, 2022
Action Type Old Value New Value Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html Mailing List, Third Party Advisory Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 20, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 19, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.html [No Types Assigned] -
Reanalysis by [email protected]
Jul. 01, 2020
Action Type Old Value New Value Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) -
Initial Analysis by [email protected]
Jul. 01, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://cloud.google.com/support/bulletins/#gcp-2020-008 No Types Assigned https://cloud.google.com/support/bulletins/#gcp-2020-008 Vendor Advisory Changed Reference Type https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29 No Types Assigned https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29 Patch, Third Party Advisory Changed Reference Type https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020 No Types Assigned https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020 Exploit, Third Party Advisory Added CWE NIST CWE-276 Added CPE Configuration OR *cpe:2.3:a:google:guest-oslogin:*:*:*:*:*:*:*:* versions from (including) 20190304.00 up to (including) 20200507.00
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-8933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-8933
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.00%
score
0.31322
percentile