CVE-2023-40313

Disable BeanShell Interpreter Remote Server Mode

HIGH

8.8

CVSS Score

Published: August 17, 2023 at 06:24 PM UTC

Updated: June 17, 2026 at 06:17 AM UTC

2 products affected across 1 vendorMeridianHorizon

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Severity

HIGH8.8

Exploit prediction

EPSS 0.8%

SSVC

No known exploit

Description

A BeanShell interpreter in remote server mode runs in OpenMNS Horizon versions earlier than 32.0.2 and in related Meridian versions which could allow arbitrary remote Java code execution. 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Horizon · Opennms

95%

v < 32.0.229.0.4 ≤ v < 32.0.229.0.4

Affected range stops below 32.0.2, so it looks safe — our inference, not a vendor statement

Vendor states this is fixed in 29.0.4 (unknown)

Meridian · Opennms

95%

v < 2020.1.382020.0.0 ≤ v ≤ 2020.1.372021.0.0 ≤ v ≤ 2021.1.292021.1.0 ≤ v < 2021.1.302022.0.0 ≤ v ≤ 2022.1.182022.1.0 ≤ v < 2022.1.192023.0.0 ≤ v ≤ 2023.1.52023.1.0 ≤ v < 2023.1.62020.0.0 2021.0.0 2022.0.0 2023.0.0

Affected range stops below 2020.1.38, so it looks safe — our inference, not a vendor statement

Affected range stops below 2021.1.30, so it looks safe — our inference, not a vendor statement

Affected range stops below 2022.1.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 2023.1.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://github.com/OpenNMS/opennms/pull/6368

References (2)

Release Notes

Source: [email protected]

https://docs.opennms.com/horizon/32/releasenotes/changelog.html

Issue TrackingPatch

Source: [email protected]

https://github.com/OpenNMS/opennms/pull/6368

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGH[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

NVD-CWE-noinfoCWE-94

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