CVE-2024-51477
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 InfoSphere Information Server 11.7 could allow an authenticated to obtain sensitive username information due to an observable response discrepancy.
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 InfoSphere Information Server 11.7 contains an information disclosure vulnerability where authenticated users can enumerate valid usernames by observing subtle differences in application responses (such as error messages, response timing, or HTTP status codes). This username enumeration could aid further attacks against the system.
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>= 11.7, < 11.7.1CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Verify IBM InfoSphere Information Server versionDetermine the installed version of IBM InfoSphere Information Server through product documentation, system inventory tools, or by examining the installation directory. Compare the discovered version against the affected range: >= 11.7, < 11.7.1Affected if The installed version falls within 11.7.x where x is any version prior to 11.7.1
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Identify authentication endpointsLocate the login and authentication-related endpoints for IBM InfoSphere Information Server, typically found in the web interface or API servicesAffected if Authentication endpoints are accessible and accept user credentials
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Test for username enumeration via response messagesSend authentication requests using both valid and invalid usernames, then compare the error messages or responses returned for eachAffected if Different error messages or responses are returned for valid usernames versus invalid usernames
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Test for username enumeration via HTTP status codesSend authentication requests with valid and invalid usernames and compare the HTTP status codes received in the responsesAffected if Different HTTP status codes are returned for valid versus invalid usernames
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Test for username enumeration via response timingSend multiple authentication requests with valid and invalid usernames and measure the response times to detect any noticeable differencesAffected if Response times differ significantly between valid and invalid usernames
You are affected if your IBM InfoSphere Information Server version is 11.7.x (prior to 11.7.1) AND authentication responses differ between valid and invalid usernames in messages, status codes, or timing.
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 · scoped11.7.1
Modify the application to return consistent responses regardless of whether a username exists, and ensure all authentication-related endpoints respond identically for both valid and invalid usernames.
11.7.1
- Review IBM InfoSphere Information Server 11.7.1 release notes for any prerequisites and compatibility considerations
- Ensure you have a complete backup of your current InfoSphere Information Server 11.7 installation and database
- Download IBM InfoSphere Information Server version 11.7.1 from IBM Fix Central or your authorized IBM distribution channel
- Follow IBM's official installation/upgrade documentation for InfoSphere Information Server 11.7.1
- Perform the upgrade following the documented upgrade path from 11.7 to 11.7.1
- After upgrade, verify that the CVE-2024-51477 vulnerability is resolved by testing the affected functionality
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-51477 — 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-2024-51477 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