CVE-2023-46278
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 · uneditedUncontrolled resource consumption vulnerability in Cybozu Remote Service 4.1.0 to 4.1.1 allows a remote authenticated attacker to consume huge storage space or cause significantly delayed communication.
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 confidenceCybozu Remote Service 4.1.0 to 4.1.1 contains an uncontrolled resource consumption vulnerability where an authenticated remote attacker can exhaust storage space or cause significant communication delays through repeated malicious operations.
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>= 4.1.0, < 4.1.2CVSS 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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Check installed Cybozu Remote Service versionAccess the product's version information through the administration console or check the product's about/info page. The version is typically visible in the system settings or by querying the service directly.Affected if The installed version is 4.1.0 or 4.1.1 (versions >= 4.1.0 and < 4.1.2 are affected)
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Verify remote access authentication is enabledCheck the Cybozu Remote Service authentication settings in the admin panel. Confirm that remote user authentication is active, as the vulnerability requires an authenticated attacker.Affected if Remote authentication is enabled and users can log in remotely to the service
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Inspect current rate limiting configurationReview the service's security or rate limiting settings to determine if any restrictions are in place for repeated operations by authenticated users.Affected if No rate limiting, user quotas, or throttling is configured for authenticated sessions
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Check storage monitoring and quota settingsExamine whether storage usage quotas per user are defined and if there are alerts or limits on storage consumption by individual accounts.Affected if No per-user storage quotas exist or storage usage is not actively monitored per user
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Review logging for anomalous resource usage patternsAnalyze server logs or monitoring dashboards for signs of excessive operations from any single authenticated user, such as repeated file uploads, API calls, or data creation.Affected if Logs show high-volume repeated operations from users without triggering alerts or blocks
The environment is affected if Cybozu Remote Service version 4.1.0 or 4.1.2 is running with remote authentication enabled and without rate limiting, user storage quotas, or resource usage monitoring in place.
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 · scoped4.1.2
Apply vendor patch when available; otherwise implement aggressive rate limiting, storage quotas per authenticated user, and monitoring for anomalous resource usage patterns.
4.1.2
- Confirm current installation version of Cybozu Remote Service is 4.1.0 or 4.1.1
- Obtain Cybozu Remote Service version 4.1.2 or later from the official vendor (Cybozu)
- Follow the vendor's standard upgrade procedure to update Cybozu Remote Service to version 4.1.2 or later
- Verify the upgrade was successful by checking the installed version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-46278 — 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-2023-46278 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