Advisory Published
Advisory Published

CVE-2023-0871: XEE

First published: Fri Aug 11 2023(Updated: )

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.

Credit: security@opennms.com security@opennms.com security@opennms.com

Affected SoftwareAffected VersionHow to fix
OpenNMS Horizon>=32.0.0<32.0.2
OpenNMS Horizon=31.0.8
OpenNMS Meridian>=2020.0.0<2020.1.38
OpenNMS Meridian>=2021.0.0<2021.1.30
OpenNMS Meridian>=2022.1.0<2022.1.9
OpenNMS Meridian>=2023.0.0<2023.1.6

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Frequently Asked Questions

  • What is CVE-2023-0871?

    CVE-2023-0871 is a vulnerability in the OpenNMS Horizon software that allows XML external entity (XXE) injection, which can be used to make arbitrary HTTP requests.

  • How severe is CVE-2023-0871?

    CVE-2023-0871 has a severity score of 8.8 (high).

  • Which versions of OpenNMS Horizon are affected by CVE-2023-0871?

    OpenNMS Horizon versions 31.0.8 and earlier than 32.0.2 are affected by CVE-2023-0871.

  • What is the remedy for CVE-2023-0871?

    To mitigate CVE-2023-0871, upgrade to OpenNMS Horizon version 32.0.2 or later.

  • Where can I find more information about CVE-2023-0871?

    You can find more information about CVE-2023-0871 in the release notes of OpenNMS Horizon version 32.0.2, the GitHub pull request, and the NVD website.


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