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Api Exchange GatewayApplication · Tibco

CVE-2019-11208

CRITICAL · 9.9 CVSS v3.1 Published 2019-08-08
Fix available
A fix is available. Upgrade to after 2.3.1 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
The authorization component of TIBCO Software Inc.'s TIBCO API Exchange Gateway, and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric contains a vulnerability that theoretically processes OAuth authorization incorrectly, leading to potential escalation of privileges for the specific customer endpoint, when the implementation uses multiple scopes. This issue affects: TIBCO Software Inc.'s TIBCO API Exchange Gateway version 2.3.1 and prior versions, and TIBCO API Exchange Gateway Distribution for TIBCO Silver Fabric version 2.3.1 and prior versions.

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 · moderate confidence

The authorization component of TIBCO API Exchange Gateway contains a flaw in OAuth authorization processing that could allow privilege escalation for specific customer endpoints when multiple scopes are implemented. The vulnerability is described as theoretical, potentially enabling unauthorized access to higher-privilege resources.

MitigationUpgrade to a version beyond 2.3.1; if no patched version is available, review and harden the OAuth implementation to ensure proper scope validation and authorization logic.

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
Api Exchange GatewayApplication
Affected:<= 2.3.1

CVSS 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
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm TIBCO API Exchange Gateway is installed
    Locate the API Exchange Gateway installation directory or check system inventory for TIBCO API Exchange Gateway components
    Affected if The product is not present on the system
  2. Determine the installed version
    Check the version of TIBCO API Exchange Gateway using the product's version command, about dialog, or version file in the installation directory
    Affected if The installed version is 2.3.1 or lower
  3. Verify OAuth authorization is enabled
    Inspect the API Exchange Gateway configuration files for OAuth authorization settings, typically found in configuration files related to authentication or security
    Affected if OAuth authorization is enabled and configured
  4. Check for multiple scope configuration
    Review OAuth scope definitions in the security or authorization configuration to determine if multiple scopes are defined
    Affected if Multiple OAuth scopes are implemented in the authorization configuration

If the installed version is 2.3.1 or lower AND OAuth authorization with multiple scopes is configured, the environment is affected by this vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to a release after 2.3.1
Interim mitigation

Upgrade to a version beyond 2.3.1; if no patched version is available, review and harden the OAuth implementation to ensure proper scope validation and authorization logic.

Recommended fix Moderate confidence

Upgrade to TIBCO API Exchange Gateway version higher than 2.3.1 (consult TIBCO for the exact fixed release)

  1. 1. Identify the current deployed version of TIBCO API Exchange Gateway using the product's version check mechanism
  2. 2. Review the current OAuth implementation and scope configurations to understand the current authorization model
  3. 3. Consult TIBCO's official security advisory and patch documentation for CVE-2019-11208 to confirm the recommended fixed version
  4. 4. Plan upgrade schedule during maintenance window
  5. 5. Before upgrading in production, test the new version in a staging environment to verify OAuth authorization behaves correctly with multiple scopes
  6. 6. Perform the upgrade to the fixed version (version higher than 2.3.1)
  7. 7. After upgrade, validate that the OAuth authorization with multiple scopes functions correctly and that privilege escalation is no longer possible
  8. 8. Update documentation and configuration management to reflect the new version
Caveat Review release notes for any configuration or API changes between 2.3.1 and the target version; OAuth scope handling may have changed

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Api Exchange Gateway Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA4.0 h
22.0 hours of engineering $3,860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-11208 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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