CVE-2023-0871

An XML External Entity injection vulnerability

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.

Remediation

Solution:

  • Upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.04%
Affected: The OpenNMS Group Horizon
Affected: The OpenNMS Group Meridian
Published at:
Updated at:

References

Link Tags
https://github.com/OpenNMS/opennms/pull/6355 patch
https://docs.opennms.com/horizon/32/releasenotes/changelog.html release notes

Frequently Asked Questions

What is the severity of CVE-2023-0871?
CVE-2023-0871 has been scored as a medium severity vulnerability.
How to fix CVE-2023-0871?
To fix CVE-2023-0871: Upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer.
Is CVE-2023-0871 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-0871 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0871?
CVE-2023-0871 affects The OpenNMS Group Horizon, The OpenNMS Group Meridian.
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