Vulnerability Details : CVE-2020-8933

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.
Published 2020-06-22 14:15:12
Updated 2024-05-21 05:15:51
Source Google Inc.
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2020-8933

EPSS FAQ
0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-8933

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.9
 MEDIUM AV:L/AC:M/Au:N/C:C/I:C/A:C
3.4
10.0
 NIST
7.8
 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
 Google Inc.
7.8
 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
 NIST

CWE ids for CVE-2020-8933

  • During installation, installed file permissions are set to allow anyone to modify those files.
    Assigned by:
    • cve-coordination@google.com (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2020-8933

Products affected by CVE-2020-8933

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