CVE-2020-8933

published 2020-06-22

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…

Priority P3 40 high 7.8 CVSS 3.1

AV L AC L PR L UI N S U C H I H A H

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
google	guest-oslogin	20190304.00 – 20200507.00	—
google_llc	guest-oslogin	>= 20190304 < 20200507	20200507
opensuse	leap	—	—
opensuse	leap	—	—

CVSS provenance

nvd v3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v4.0 9.3 CRITICAL 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

nvd v2.0 6.9 MEDIUM AV:L/AC:M/Au:N/C:C/I:C/A:C

osv 9.3 CRITICAL

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