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GaroonApplication · Cybozu

CVE-2020-5583

MEDIUM · 6.5 CVSS v3.1 Published 2020-06-30
Fix available
A fix is available. Upgrade to after 5.0.1 or later.
See remediation →
72/100
Remediation priority · Elevated
Remotely reachable No privileges

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 · unedited
Cybozu Garoon 4.0.0 to 5.0.1 allows remote authenticated attackers to bypass access restriction to obtain unauthorized Multi-Report's data via unspecified vectors.

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 confidence

Cybozu Garoon versions 4.0.0 to 5.0.1 contain an access control bypass vulnerability in the Multi-Report module. Authenticated remote attackers can bypass existing access restrictions to view unauthorized data records they should not have permission to access. The exact exploitation method is not specified in the CVE.

MitigationApply vendor patch by updating Cybozu Garoon to version 5.0.2 or later. This is a direct access control bypass that cannot be meaningfully mitigated through configuration changes.

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
GaroonApplication
Affected:>= 4.0.0, <= 5.0.1

CVSS 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
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Cybozu Garoon version
    Check the product version through the Garoon administration interface (System Settings > System Information) or by examining the garoon/version file if accessible on the server
    Affected if The installed version is 4.0.0, 4.0.1, 4.0.2, 4.0.3, 5.0.0, or 5.0.1 (any version from 4.0.0 through 5.0.1 inclusive)
  2. Confirm Multi-Report module is in use
    Verify whether the Multi-Report (多元化レポート) application module is installed and enabled in your Garoon environment through the administration screen
    Affected if Multi-Report module is installed and active in the affected version range
  3. Review access logs for anomalies
    Examine Garoon access logs (特别是 MULTI_REPORT モジュール records) for patterns of unauthorized data access from users who should not have permission to view certain records
    Affected if Logs show authenticated users accessing Multi-Report data records outside their normal permissions

You are affected if Cybozu Garoon version 4.0.0 through 5.0.1 is installed AND the Multi-Report module is enabled, as this combination allows authenticated attackers to bypass access controls.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 5.0.1
Interim mitigation

Apply vendor patch by updating Cybozu Garoon to version 5.0.2 or later. This is a direct access control bypass that cannot be meaningfully mitigated through configuration changes.

Fix this in Garoon Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-5583 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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