Security readout for executives and security teams
Plain-English summary
This is a low-severity access-control flaw in Cloud Foundry Cloud Controller. A logged-in user with cloud_controller.read but no space roles could see droplet listings across all spaces, when they should see none. It is mainly a confidentiality and tenant-boundary issue, not a service outage or code-execution issue.
Executive priority
Handle in normal patch governance unless your Cloud Foundry platform hosts sensitive multi-tenant workloads or broad read-scope accounts. The business risk is unauthorized metadata visibility, not platform compromise based on the provided sources.
Technical view
Cloud Foundry CAPI before 1.98.0 incorrectly authorized droplet list access for authenticated principals with only the cloud_controller.read scope and no space roles. The issue maps to CWE-863 and has CVSS 3.1, reflecting network reachability, required low privileges, high attack complexity, and limited confidentiality impact.
Likely exposure
Exposure is limited to Cloud Foundry environments running CAPI or CF Deployment with Cloud Controller versions before 1.98.0, where users or clients can authenticate with cloud_controller.read but lack space roles.
Exploitation context
The source bundle does not show CISA KEV listing or other cited evidence of active exploitation. Abuse requires authenticated access and the specific scope/role mismatch, reducing broad internet risk but still affecting multi-tenant confidentiality boundaries.
Researcher notes
The evidence supports an authorization bypass in droplet listing only. No source in the bundle describes exploit tooling, broader object access, integrity impact, availability impact, or active exploitation. Avoid expanding scope beyond Cloud Foundry CAPI/CF Deployment behavior before 1.98.0.
Mitigation direction
- Upgrade Cloud Foundry CAPI or Cloud Controller to 1.98.0 or later.
- Check the Cloud Foundry advisory for exact fixed release guidance.
- Review who has the cloud_controller.read scope.
- Remove unnecessary read scope from users or clients without a business need.
- Reassess tenant visibility controls after the upgrade.
Validation and detection
- Inventory Cloud Foundry deployments and record Cloud Controller or CAPI versions.
- Identify users or clients with cloud_controller.read and no space roles.
- Confirm affected deployments are below CAPI 1.98.0.
- Review audit logs for unusual droplet listing by low-privilege accounts.
- After remediation, verify droplet visibility matches assigned space roles.
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.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2020-5418 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
- Low
- CVSS
- 3.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N1.61.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
3.1LowVector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cloudfoundry.org/blog/cve-2020-5418CVE 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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.