dbcve.org
FtlApplication · Tibco

CVE-2021-43053

HIGH · 7.5 CVSS v3.1 Published 2022-01-11
Fix available
A fix is available. Upgrade to after 6.7.2 or later.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges 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 Realm Server component of TIBCO Software Inc.'s TIBCO FTL - Community Edition, TIBCO FTL - Developer Edition, and TIBCO FTL - Enterprise Edition contains a difficult to exploit vulnerability that allows an unauthenticated attacker with network access to obtain the cluster secret of another application connected to the realm server. Affected releases are TIBCO Software Inc.'s TIBCO FTL - Community Edition: versions 6.7.2 and below, TIBCO FTL - Developer Edition: versions 6.7.2 and below, and TIBCO FTL - Enterprise Edition: versions 6.7.2 and below.

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 confidence

The Realm Server component in TIBCO FTL (Community, Developer, and Enterprise editions versions 6.7.2 and below) contains an information disclosure vulnerability that allows an unauthenticated attacker with network access to obtain cluster secrets of other applications connected to the realm server.

MitigationUpgrade TIBCO FTL to a patched version above 6.7.2 and rotate all cluster secrets that may have been exposed, as they could enable further attacks against the FTL infrastructure.

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
FtlApplication
Affected:<= 6.7.2

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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. Identify if TIBCO FTL is installed
    Check for FTL installation directories or installed packages. Common locations include /opt/tibco/ftl or C:\tibco\ftl on Windows. Use commands like 'ls /opt/tibco' or check Programs and Features on Windows.
    Affected if TIBCO FTL software is present on the system
  2. Determine installed FTL version
    Check the version of the FTL installation. Look for a version file in the FTL installation directory, or run 'ftlserver --version' or check the product's about/info dialog if a GUI is available.
    Affected if The installed version is 6.7.2 or lower (any version <= 6.7.2)
  3. Identify if Realm Server component is in use
    Check FTL configuration files (typically in the FTL installation under /conf or /realm directory) to see if realm server is configured and enabled. Look for realm server configuration files or check running processes for realm server daemons.
    Affected if Realm Server component is configured and running
  4. Assess network exposure of Realm Server
    Check network listeners and firewall rules to determine if the Realm Server port (default ports 8080, 8081, or custom ports as configured) is exposed to untrusted networks. Use 'netstat -an' or 'ss -tlnp' to list listening ports and review firewall configurations.
    Affected if Realm Server is listening on a network interface accessible from untrusted networks (not restricted to localhost or trusted internal networks)

A user is affected if they have TIBCO FTL version 6.7.2 or lower running with the Realm Server component enabled and exposed to network access, allowing unauthenticated attackers to potentially retrieve cluster secrets.

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 6.7.2
Interim mitigation

Upgrade TIBCO FTL to a patched version above 6.7.2 and rotate all cluster secrets that may have been exposed, as they could enable further attacks against the FTL infrastructure.

Recommended fix Moderate confidence

TIBCO FTL version 6.7.3 or later (verify exact version from TIBCO security advisory)

  1. 1. Identify all TIBCO FTL installations (Community, Developer, and Enterprise editions) in your environment running version 6.7.2 or below.
  2. 2. Consult the official TIBCO security advisory at tibco.com for this CVE to obtain the specific fixed version number.
  3. 3. Plan the upgrade considering your environment - test in a staging environment first.
  4. 4. Backup your current configuration and cluster secret data before upgrading.
  5. 5. Upgrade TIBCO FTL to the fixed version specified in the TIBCO security advisory.
  6. 6. Verify that the Realm Server component is functioning correctly after the upgrade.
  7. 7. Confirm that the cluster secret can no longer be obtained by unauthenticated attackers by reviewing the security configuration.
Caveat Review TIBCO release notes for the fixed version for any potential compatibility or configuration changes

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

Fix this in Ftl Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,380
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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-2021-43053 in production — separate from our analysis above.

No notes yet

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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