Db2Application · Ibm
CVE-2024-27254
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 · uneditedIBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 10.5, 11.1, and 11.5 federated server is vulnerable to denial of service with a specially crafted query under certain conditions. IBM X-Force ID: 283813.
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 confidenceIBM Db2 versions 10.5, 11.1, and 11.5 contain a denial of service vulnerability in the federated server component. The vulnerability is triggered by a specially crafted query under certain conditions, allowing an attacker to cause the federated server to become unavailable.
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
Db2Application
= 10.5= 11.1= 11.5CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Identify IBM Db2 versionRun the command 'db2level' or query the database version using 'db2 select * from sysibmadm.env_cfg'Affected if The installed version is 10.5, 11.1, or 11.5
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Confirm federated server component is in useCheck if the federated server functionality is configured by running 'db2 get dbm cfg | grep -i federated' or by checking for federated database objects such as nicknamesAffected if The federated server component is enabled or federated objects exist in the environment
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Review federated server configurationQuery the DB2 registry settings related to federation using 'db2set -lr | grep -i fed' and check for active federated data sourcesAffected if Federated data sources or wrappers are configured and active
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Monitor for anomalous federated queriesReview db2diag.log and database monitoring logs for unusual query patterns targeting federated tables or nicknames, especially from untrusted sourcesAffected if There are signs of specially crafted queries causing resource exhaustion or server unresponsiveness in federated operations
The environment is affected if IBM Db2 versions 10.5, 11.1, or 11.5 are running with the federated server component enabled and the server becomes unavailable or exhibits unusual behavior under certain federated query loads.
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.
dbcve · scopedApply IBM Db2 patches or updates provided for CVE-2024-27254 to the affected federated server installations. If immediate patching is not possible, restrict network access to the federated server component and monitor for anomalous query patterns.
Db2 10.5 FP11+, 11.1 FP11+, or 11.5 FP7+ (or latest available fix pack for each release)
- 1. Identify the current Db2 fix pack level by running: db2pd -version or SELECT GET_VARCHAR_FOR_BIT_DATA(PACKAGE_VERSION) FROM SYSIBM.SYSPACKAGE where PKGNAME='DB2HELP'
- 2. Download and install the appropriate Db2 fix pack from IBM Fix Central (https://www.ibm.com/support/fixcentral/)
- 3. Select your Db2 version (10.5, 11.1, or 11.5) and choose the latest available fix pack that includes security updates
- 4. Apply the fix pack following IBM's installation instructions: stop all Db2 instances, run the install FixPack command, restart instances
- 5. Verify the fix was applied successfully by checking the new version level matches the fixed release
Generated from the published advisory — verify against the referenced sources before acting.
Fix this in Db2
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-27254 — 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-2024-27254 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
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