Security readout for executives and security teams
Plain-English summary
Cloud Foundry deployments using affected Cloud Controller, Router, or CF-release versions can mishandle identity tokens from UAA. In certain multi-zone UAA setups, a zone administrator may be able to escalate privileges beyond the intended boundary. This is most urgent where Cloud Foundry uses delegated zone administration or multi-tenant identity zones.
Executive priority
Prioritize remediation for Cloud Foundry environments with multi-zone UAA or delegated administration. The issue affects identity trust boundaries and can enable privilege escalation, but the public sources do not show active exploitation or provide severity scoring.
Technical view
CVE-2017-8034 is an issuer-validation failure for JWTs from UAA in Cloud Foundry Cloud Controller and Router. Affected versions are CAPI-release capi before v1.32.0, Routing-release before v0.159.0, and CF-release before v267. The public description limits exploitation to certain multi-zone UAA configurations and does not provide CVSS details.
Likely exposure
Exposure is likely limited to Cloud Foundry environments running the affected release lines, especially those with multi-zone UAA configurations and zone administrators. Single-zone deployments may have lower practical exposure, but the supplied sources do not fully define safe configurations.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not listed as KEV. The described impact is privilege escalation by zone administrators under certain multi-zone UAA configurations. No public source in the bundle gives exploitation prevalence, exploit code status, or incident evidence.
Researcher notes
Focus validation on JWT issuer handling between UAA, Cloud Controller, and Router in multi-zone deployments. The available public data is sparse: no CVSS, CWE, exploit status, or detailed patch notes are included in the supplied bundle beyond affected version thresholds.
Mitigation direction
- Upgrade CAPI-release capi to v1.32.0 or later where applicable.
- Upgrade Routing-release to v0.159.0 or later where applicable.
- Upgrade CF-release to v267 or later where applicable.
- Review Cloud Foundry vendor guidance before applying compensating controls.
- Limit zone administrator assignments until affected components are upgraded.
Validation and detection
- Inventory Cloud Foundry CAPI-release, Routing-release, and CF-release versions.
- Confirm whether UAA is configured with multiple identity zones.
- Review who holds zone administrator roles in affected environments.
- Verify upgraded components are at or beyond the fixed version thresholds.
- Review audit records for unexpected privilege or role changes.
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-2017-8034 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/cve-2017-8034/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.