CVE-2019-4420
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 Intelligent Operations Center V5.1.0 through V5.2.0 could disclose detailed error messages, revealing sensitive information that could aid in further attacks against the system. IBM X-Force ID: 162738.
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 Intelligent Operations Center versions 5.1.0 through 5.2.0 contains a vulnerability where detailed error messages are disclosed to users, revealing sensitive system information such as stack traces, file paths, database details, or configuration data that could be leveraged for further attacks.
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>= 5.1.0, <= 5.2.0>= 5.1.0, <= 5.1.0.6>= 5.1.0, <= 5.2.1.1CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:L/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 checksWork through these to decide whether this CVE applies to you.
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Confirm installed product versionLocate the IBM Intelligent Operations Center, IBM Intelligent Operations Center For Emergency Management, or IBM Water Operations For Waternamics installation and check the version number against the affected ranges: 5.1.0-5.2.0, 5.1.0-5.1.0.6, or 5.1.0-5.2.1.1 respectivelyAffected if The installed version falls within any of these ranges: 5.1.0 to 5.2.0 for IOC, 5.1.0 to 5.1.0.6 for IOC-EM, or 5.1.0 to 5.2.1.1 for Water Operations
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Identify error page configurationLocate the web application configuration files (such as web.xml or ibm-web-ext.xml) and review the error-page mappings to determine which custom error pages or default error handlers are configuredAffected if No custom error pages are defined or the configuration points to default server error pages that expose stack traces
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Trigger a test error conditionSubmit invalid input to an application endpoint or intentionally cause an error (such as accessing a non-existent resource) and capture the HTTP response or displayed error pageAffected if The error output contains stack traces, file paths, database connection strings, or internal configuration details visible to end users
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Review error logging configurationExamine the application server configuration (such as log4j, logging.properties, or WebSphere error log settings) to determine if detailed errors are being written to logs accessible by the application or if error output is being captured and displayedAffected if Error handling is configured to output verbose diagnostic information to the response stream rather than logging only to protected server-side files
A user is affected if they are running any of the listed product versions within the affected ranges AND the application displays verbose error messages containing stack traces, file paths, or system details to end 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 dataConfigure the application to display generic, user-friendly error messages instead of detailed technical information. Implement custom error pages and ensure detailed error logging is restricted to server-side logs accessible only to administrators.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-4420 — 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-2019-4420 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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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.
- 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