CVE-2014-2003
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 · uneditedJustSystems JUST Online Update, as used in Ichitaro through 2014 and other products, does not properly validate signatures of update modules, which allows remote attackers to spoof modules and execute arbitrary code via a crafted signature.
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 confidenceThe JUST Online Update component used in JustSystems products including Ichitaro through 2014 fails to properly validate digital signatures on update modules. This allows an attacker to craft malicious update packages with forged signatures, bypassing authentication and enabling arbitrary code execution on affected systems.
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<= 2014= 10= 11= 12= 13= 2004= 2005= 2006= 2007= 2008= 2009= 2010all versionsCVSS 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
- High
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:H/Au:N/C:C/I:C/A:C
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 if JustSystems products are installedCheck system for presence of JustSystems Ichitaro or Just Online Update component - look for JustSystems application directories, Start Menu entries, or installed programs listingAffected if Either Ichitaro (any version 10-2014) or Just Online Update is found on the system
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Determine Ichitaro versionOpen Ichitaro and check the version information (typically via Help > Version Information or About menu), or check installed programs listing for the specific version numberAffected if Version is 10, 11, 12, 13, 2004, 2005, 2006, 2007, 2008, 2009, 2010, or any version through 2014
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Determine Just Online Update versionCheck for Just Online Update component - this may appear as a system service, startup item, or installed component associated with JustSystems productsAffected if Just Online Update is present on the system (all versions are affected)
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Check if automatic update feature is enabledLook for Just Online Update settings within Ichitaro (Tools > Options > Update) or check for Just Online Update service/daemon running on the systemAffected if Automatic updates are enabled or the update service is active - this is required for the attack vector to be exploitable
The system is affected if Just Online Update component or any Ichitaro version 10 through 2014 is installed with automatic updates enabled, as the signature validation flaw allows forged malicious updates to be accepted.
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 dataApply vendor patches for affected JustSystems products. Until patches are available, disable automatic updates or verify update sources through alternative means. Network-based controls can limit exposure by restricting update server communications to known-good endpoints.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2003 — 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-2014-2003 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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