CVE-2023-0871 An XML External Entity injection vulnerability

What is CVE-2023-0871?

CVE-2023-0871 is a medium-severity vulnerability in The OpenNMS Group Horizon, published on 11 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-611

Which versions are affected by CVE-2023-0871?

2 open source packages ship an affected version, including org.opennms.core:org.opennms.core.xml. It affects 2 products.

Products include Opennms Horizon, Opennms Meridian.

How do I fix CVE-2023-0871?

Upgrade org.opennms.core:org.opennms.core.xml to 32.0.2 or later.

Is CVE-2023-0871 being exploited?

There is no known exploitation of CVE-2023-0871 in the wild and no public exploit code.

Other vulnerabilities in The OpenNMS Group Horizon

• CVE-2021-25931 Cross-Site Request Forgery in OpenNMS Horizon High 8.8
• CVE-2021-3396 OpenNMS Horizon RCE via JEXL2 expression High 8.8
• CVE-2023-0872 ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users High 8.2
• CVE-2023-0870 Form Can Be Manipulated with Cross-Site Request Forgery (CSRF) High 8.1
• CVE-2020-11886 SQL injection in n/a High 8.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-2qc8-r663-v864.