CVE-2018-15761
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCloud Foundry UAA release, versions prior to v64.0, and UAA, versions prior to 4.23.0, contains a validation error which allows for privilege escalation. A remote authenticated user may modify the url and content of a consent page to gain a token with arbitrary scopes that escalates their privileges.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceCloud Foundry UAA versions prior to v64.0 and UAA prior to 4.23.0 contain a validation error in the consent page flow that allows authenticated users to manipulate the URL and content parameters to request tokens with arbitrary scopes, enabling privilege escalation beyond their assigned permissions.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 4.23.0< 64.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check UAA version via uaac CLIRun command: uaac version or uaac target to see the targeted UAA versionAffected if Version shows less than 4.23.0 (e.g., 4.22.x, 4.21.x, etc.)
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Check UAA release version from deploymentInspect the deployment manifest or release files for the UAA release version number (often in cf-deployment manifest or ops manager)Affected if Release version is less than 64.0 (e.g., 63.x, 62.x, etc.)
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Verify OAuth authorization consent flow is enabledCheck if the UAA is configured with an OAuth/OIDC authorization endpoint that presents a consent page to users (typically at /oauth/authorize)Affected if Consent page flow is active and UAA version is below the fixed releases
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Check UAA package/version file directlyOn the UAA server, check the version file: /app/VERSION or look for version info in the UAA JAR/binaryAffected if Version file shows a version prior to 4.23.0
You are affected if your deployed UAA version is below 4.23.0 (UAA) or your UAA release is below 64.0, and the OAuth consent page flow is enabled for users.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data4.23.064.0
Upgrade UAA to version 4.23.0 or later, or UAA release to v64.0 or later, to implement proper validation on the consent page that prevents scope manipulation.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-15761 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2018-15761 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data