Vulnerability · Published Aug 11, 2023 · Assigned by OpenNMS
CVE-2023-0871An XML External Entity injection vulnerability
Medium 5.4
In plain English
A medium-severity XML external entity in Horizon from The OpenNMS Group. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.opennms.core:org.opennms.core.xml | 32.0.2 | GHSA-2qc8-r663-v864 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The OpenNMS Group | Horizon | 31.0.8 – before 32.0.2 |
| The OpenNMS Group | Meridian | 2023.0.0 – before 2023.1.62022.0.0 – before 2022.1.192021.0.0 – before 2021.1.302020.0.0 – before 2020.1.38 |
Weakness: CWE-611 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L