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CVE Record

CVE-2018-15754: UAA can issue tokens across identity providers if users with matching usernames exist

Cloud Foundry UAA, versions 60 prior to 66.0, contain an authorization logic error. In environments with multiple identity providers that contain accounts across identity providers with the same username, a remote authenticated user with access to one of these accounts may be able to obtain a token for an account of the same username in the other identity provider.

MediumCVSS 4.2Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

Cloud Foundry UAA could confuse users who share the same username across different identity providers. An authenticated user in one provider might receive a token for the same-named account in another provider, creating limited confidentiality and integrity risk. Organizations running affected Cloud Foundry UAA releases are mainly exposed when multiple identity providers are enabled and the same username exists in more than one provider. Treat as a targeted identity-risk issue, not a broad internet worm risk. Prioritize if Cloud Foundry UAA backs production access or privileged administrative workflows. Mitigation focus: Upgrade Cloud Foundry UAA to 66.0 or later, or the vendor-recommended fixed release.; Check Cloud Foundry advisory guidance before making production authentication changes.; Remove or rename duplicate usernames across identity providers where feasible..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-15754 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4.2 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
4.2CVSS 3.0MediumCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N1.62.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

4.2Medium
CVSS 3.0 vector shape for CVE-2018-15754Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Cloud FoundryUAA Release60Listed
Weakness

CWE details

No CWE listed

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