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CephApplication · Linuxfoundation

CVE-2020-10736

HIGH · 8.0 CVSS v3.1 Published 2020-06-22
Fix available
A fix is available. Upgrade to 15.2.2 or later.
See remediation →
82/100
Remediation priority · High
Zero-click

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
An authorization bypass vulnerability was found in Ceph versions 15.2.0 before 15.2.2, where the ceph-mon and ceph-mgr daemons do not properly restrict access, resulting in gaining access to unauthorized resources. This flaw allows an authenticated client to modify the configuration and possibly conduct further attacks.

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 · high confidence

An authorization bypass vulnerability in Ceph versions 15.2.0-15.2.1 affects the ceph-mon (monitor) and ceph-mgr (manager) daemons, which fail to properly restrict access. This allows an authenticated client to gain unauthorized access to resources and modify configuration, potentially enabling further attacks.

MitigationUpgrade to Ceph version 15.2.2 or later to remediate the authorization bypass in the ceph-mon and ceph-mgr daemons.

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
CephApplication
Affected:>= 15.2.0, < 15.2.2

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
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/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 checks

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

  1. Identify installed Ceph version
    Run 'ceph --version' or 'cephadm version' to retrieve the installed Ceph software version
    Affected if The version displayed is 15.2.0 or 15.2.1, placing it within the affected range (>= 15.2.0, < 15.2.2)
  2. Confirm ceph-mon daemon is active
    Run 'systemctl status ceph-mon.target' or check via 'ceph status' to verify the monitor daemon is running
    Affected if The ceph-mon daemon is running or enabled, making it a potential attack vector for the authorization bypass
  3. Confirm ceph-mgr daemon is active
    Run 'systemctl status ceph-mgr.target' or check via 'ceph status' to verify the manager daemon is running
    Affected if The ceph-mgr daemon is running or enabled, making it a potential attack vector for the authorization bypass

You are affected if your Ceph version is 15.2.0 or 15.2.1 and either the ceph-mon or ceph-mgr daemon is active in your environment.

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 15.2.2 or later
Fixed in 15.2.2
Interim mitigation

Upgrade to Ceph version 15.2.2 or later to remediate the authorization bypass in the ceph-mon and ceph-mgr daemons.

Fix this in Ceph Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
25.0 hours of engineering $4,400
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.

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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-2020-10736 in production — separate from our analysis above.

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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