CVE intelligence and bounded remediation

CVE-2020-10731 — A flaw was found in the nova_libvirt container provided by the Red Hat OpenStack Platform 16, where it does not have SELinux enabled

Critical CVSS 9.9

A flaw was found in the nova_libvirt container provided by the Red Hat OpenStack Platform 16, where it does not have SELinux enabled. This flaw causes sVirt, an important isolation mechanism, to be disabled for all running virtual machines.

Severity
Critical
CVSS
9.9 (3.1)
Published
2020-07-31
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-284

Affected products

  • redhat / openstack_platform / 15.0
  • redhat / openstack_platform / 16.0
  • redhat / openstack_platform / 16.1

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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