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TI-2020-07167 Aliases CVE-2020-8933GHSA-29jr-2926-3w9p

Priviged Escalation in Google Cloud Platform's Guest-OSLogin

Priority MEDIUM 42CWE-276Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

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 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00353 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed guest-oslogin (Google LLC): 20200507

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Googleguest-oslogin20190304 to before 2020050720200507Patch availableCNA
  • guest-oslogin VendorGoogle Affected 20190304 to before 20200507 Fixed in 20200507 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:google:guest-oslogin:*:*:*:*:*:*:*:*20190304.00 – 20200507.00VulnerableGoogle
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*15.2VulnerableopenSUSE
  • cpe:2.3:a:google:guest-oslogin:*:*:*:*:*:*:*:* Versions 20190304.00 – 20200507.00 Vulnerable ·Google
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Versions 15.2 Vulnerable ·openSUSE

Remediation

  • Fix · CNA guest-oslogin (Google LLC) Fixed in 20200507

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Google guest-oslogin — openSUSE-SU-2020:0996

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2020-07154 Priviged Escalation in Google Cloud Platform's Guest-OSLoginPriority HIGH 75
    • TI-2020-07151 Priviged Escalation in Google Cloud Platform's Guest-OSLoginPriority LOW 32
    Show all 3 records → Advisory →
  • Advisory ·

    Google guest-oslogin — openSUSE-SU-2020:1014

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2020-07154 Priviged Escalation in Google Cloud Platform's Guest-OSLoginPriority HIGH 75
    • TI-2020-07151 Priviged Escalation in Google Cloud Platform's Guest-OSLoginPriority LOW 32
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8933
  2. 2026-10-03 Alias added: GHSA-29jr-2926-3w9p

References

Exploit 1

Patch 1

Advisory 3

  • TI-2020-07154 Priviged Escalation in Google Cloud Platform's Guest-OSLogin CVSS 4.0CRITICAL 9.3
  • TI-2020-07151 Priviged Escalation in Google Cloud Platform's Guest-OSLogin CVSS 4.0HIGH 7.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences