Security readout for executives and security teams
Plain-English summary
In affected Cloud Foundry deployments, a Silk CNI access-control flaw can let any app reach any other app when an application security group overlaps the Silk overlay network. This weakens application isolation and can increase blast radius inside the platform.
Executive priority
Prioritize review for Cloud Foundry platforms because the flaw can undermine workload isolation. Urgency is highest where ASG ranges overlap the Silk overlay network or plugin versions are unknown.
Technical view
CVE-2018-1267 is an improper access control issue in Cloud Foundry Silk CNI plugin versions before 0.2.0. Exposure depends on an ASG overlapping the Silk overlay network, causing configured routing policies to be bypassed for application-to-application traffic.
Likely exposure
Exposure is limited to Cloud Foundry environments using Silk CNI plugin before 0.2.0 with overlapping ASG and overlay network ranges. The provided bundle does not identify affected distributions or deployments beyond that condition.
Exploitation context
The sources do not report active exploitation, and KEV is false. The issue is configuration-dependent but serious because it can bypass intended application routing controls inside the platform.
Researcher notes
Key evidence is concise: affected versions are before 0.2.0, and the trigger is ASG overlap with the Silk overlay network. No CVSS, CWE, exploit status, or broader affected product list is provided in the bundle.
Mitigation direction
- Upgrade Silk CNI plugin to version 0.2.0 or later.
- Check Cloud Foundry vendor guidance for deployment-specific remediation.
- Remove ASG rules that overlap the Silk overlay network.
- Review application network segmentation assumptions after remediation.
Validation and detection
- Inventory Cloud Foundry deployments using Silk CNI.
- Confirm Silk CNI plugin version is 0.2.0 or later.
- Compare ASG ranges against the Silk overlay network range.
- Verify routing policies still block unauthorized application-to-application traffic.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-1267 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cloudfoundry.org/blog/cve-2018-1267/CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.