CVE-2020-8933: falha crítica em Google LLC guest-oslogin
Priviged Escalation in Google Cloud Platform's Guest-OSLogin
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28Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 9.3epss 0.4%
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.
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
Produtos afetados
Google LLC · guest-osloginCVEs relacionadas — Google LLC guest-oslogin
No mesmo produto, das mais perigosas para as menos.
Referências
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00037.htmlhttp://lists.opensuse.org/opensuse-security-announce/2020-07/msg00047.htmlhttps://cloud.google.com/support/bulletins/#gcp-2020-008https://github.com/GoogleCloudPlatform/guest-oslogin/pull/29https://gitlab.com/gitlab-com/gl-security/gl-redteam/red-team-tech-notes/-/tree/master/oslogin-privesc-june-2020