CVE intelligence and bounded remediation

CVE-2018-1267 — Cloud Foundry Silk CNI plugin, versions prior to 0.2.0, contains an improper access control vulnerability

High CVSS 8.1

Cloud Foundry Silk CNI plugin, versions prior to 0.2.0, contains an improper access control vulnerability. If the platform is configured with an application security group (ASG) that overlaps with the Silk overlay network, any applications can reach any other application on the network regardless of the configured routing policies.

Severity
High
CVSS
8.1 (3.1)
Published
2018-03-27
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-732

Affected products

  • cloudfoundry / silk-release

Matched remediation archetype

Privilege escalation and unsafe privilege management

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Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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