CheckmkApplication

CVE-2023-6735

HIGH · 7.8 CVSS v3.1 Published 2024-01-12
Fix available
A fix is available. Upgrade to after 2.0.0 or later.
See remediation →
80/100
Remediation priority · High
Zero-click Patch available

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
Privilege escalation in mk_tsm agent plugin in Checkmk before 2.2.0p18, 2.1.0p38 and 2.0.0p39 allows local user to escalate privileges

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

A detailed technical summary for this CVE is being prepared.

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
CheckmkApplication
Affected:= 2.0.0= 2.1.0= 2.2.0
CheckmkApplication
Affected:<= 2.0.0

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

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

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 · scoped
Upgrade available Upgrade to a release after 2.0.0
Vendor patch checkmk.com →
Recommended fix High confidence

2.2.0p18 (for 2.2.x users), 2.1.0p38 (for 2.1.x users), or 2.0.0p39 (for 2.0.x users)

  1. Identify current Checkmk version by running 'cmk --version' or checking the web interface
  2. Determine the appropriate patched version based on your current major version line (2.2.0p18, 2.1.0p38, or 2.0.0p39)
  3. Download the patched version from the official Checkmk download page or your existing subscription channel
  4. Back up the current Checkmk configuration (/opt/omd/sites/<sitename>/etc and /opt/omd/sites/<sitename>/var)
  5. Stop the Checkmk site: 'cmk -S <sitename>'
  6. Install the patched version using the standard Checkmk upgrade process
  7. Verify the mk_tsm agent plugin has been updated to the patched version
  8. Start the Checkmk site: 'cmk -s <sitename>'

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $1,950. Get the upgrade done

Scan for this in your stack

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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-2023-6735 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
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