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HorizonApplication · Opennms

CVE-2023-0872

HIGH · 8.0 CVSS v3.1 Published 2023-08-14
Fix available
A fix is available. Upgrade to 32.0.2 or later.
See remediation →
82/100
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
The Horizon REST API includes a users endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to elevation of privilege. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet. OpenNMS thanks Erik Wynter for reporting this issue.

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
How this class of weakness works · CWE-269

Privileges are granted, or fail to be dropped, incorrectly, so an action runs with more power than it should. An attacker who reaches that path inherits the excess privilege. The fix is least-privilege throughout, with explicit, checked transitions whenever privilege changes.

General guidance for the improper privilege management class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
HorizonApplication
Affected:>= 31.0.8, < 32.0.2
MeridianApplication
Affected:>= 2020.0.0, <= 2020.1.37>= 2021.0.0, <= 2021.1.29>= 2022.0.0, <= 2022.1.18>= 2023.0.0, <= 2023.1.5

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

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 32.0.2 or later
Fixed in 32.0.2
Vendor patch github.com →
Recommended fix High confidence

Horizon: 32.0.2+ | Meridian: 2023.1.6, 2022.1.19, 2021.1.30, or 2020.1.38 (depending on your 202X branch)

  1. Identify the currently installed Horizon or Meridian version using the system management console or CLI
  2. For Horizon installations: Plan and execute upgrade to version 32.0.2 or newer
  3. For Meridian installations: Upgrade based on your current major version branch: 2020.x → 2020.1.38, 2021.x → 2021.1.30, 2022.x → 2022.1.19, or 2023.x → 2023.1.6
  4. Review upgrade documentation at docs.opennms.com before starting the upgrade
  5. Execute the upgrade following standard OpenNMS upgrade procedures
  6. After upgrade, verify the users REST API endpoint no longer allows privilege elevation
  7. Ensure the system is not directly exposed to the Internet as per installation guidelines
Caveat Minor version upgrades typically have low risk, but review release notes for Horizon 32.0.x for any breaking changes if upgrading from 31.x

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

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,950. Get the upgrade done

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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-2023-0872 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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