Security readout for executives and security teams
Plain-English summary
This flaw lets a privileged Cloud Foundry UAA OAuth client exceed intended limits. If a malicious client already has clients.write, it may create other clients with scopes it should not be able to grant, risking unauthorized access and data exposure.
Executive priority
Treat as high priority where older UAA is still deployed. The flaw can undermine identity governance, but the known preconditions make emergency action most relevant for exposed, unpatched environments.
Technical view
Cloud Foundry UAA Release OSS before v73.4.0 mishandles authorization constraints for clients created through clients.write. A client with the clients.write authority or scope can bypass creator-scope restrictions and create clients with arbitrary scopes not held by the creator.
Likely exposure
Exposure is limited to Cloud Foundry UAA Release OSS deployments running versions prior to v73.4.0 where a client has the clients.write authority or scope.
Exploitation context
The source bundle does not show CISA KEV listing or cited evidence of active exploitation. Exploitation has high prerequisites: privileged client access is required, and the CVSS vector includes user interaction.
Researcher notes
This is CWE-269 privilege management failure with scope change and high confidentiality and integrity impact. Available evidence names the affected product and fixed version, but does not describe exploit mechanics, required user interaction, or real-world exploitation.
Mitigation direction
- Upgrade Cloud Foundry UAA Release OSS to v73.4.0 or later.
- Review vendor advisories for deployment-specific remediation guidance.
- Restrict clients.write to only trusted administrative clients.
- Audit existing OAuth clients for unexpected or excessive scopes.
Validation and detection
- Identify all deployed UAA versions and confirm none are prior to v73.4.0.
- List clients with clients.write authority or scope.
- Review recently created clients for scopes not held by their creator.
- Check UAA audit logs for unusual client creation or update activity.
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-269: 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-2019-11270 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
- High
- CVSS
- 7.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/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:H/UI:R/S:C/C:H/I:H/A:N15.8Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.3HighVector: CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cloudfoundry.org/blog/cve-2019-11270CVE reference · x_refsource_CONFIRM
- https://pivotal.io/security/cve-2019-11270CVE 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.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.