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CVE-2023-0871 Details

Description

XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon to make arbitrary HTTP requests to internal and external services. 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 and Moshe Apelbaum for reporting this issue.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://docs.opennms.com/horizon/32/releasenotes/changelog.html	CVE	Release Notes
https://github.com/OpenNMS/opennms/pull/6355	CVE	Patch
https://docs.opennms.com/horizon/32/releasenotes/changelog.html	[email protected]	Release Notes
https://github.com/OpenNMS/opennms/pull/6355	[email protected]	Patch

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-611	Improper Restriction of XML External Entity Reference	[email protected]
CWE-611	Improper Restriction of XML External Entity Reference	[email protected]

Affected Products

Product	Versions
opennms horizon	>= 32.0.0, < 32.0.2 31.0.8
CPE cpe:2.3:a:opennms:horizon:::::::: cpe:2.3:a:opennms:horizon:31.0.8:::::::* Remediation No remediation found in references.
opennms meridian	>= 2020.0.0, < 2020.1.38 >= 2021.0.0, < 2021.1.30 >= 2022.1.0, < 2022.1.9 >= 2023.0.0, < 2023.1.6
CPE cpe:2.3:a:opennms:meridian:::::::: Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 22, 2023	CVE Modified	[email protected]
Aug 18, 2023	Initial Analysis	[email protected]
Aug 17, 2023	CVE Modified	[email protected]
Aug 16, 2023	CVE Modified	[email protected]
Aug 14, 2023	CVE Modified	[email protected]