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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
The OpenNMS Group Horizon
Default version status: unaffected
31.0.8 to < 32.0.2affected0 to < 31.0.8unknown
The OpenNMS Group Meridian
Default version status: unaffected
2023.0.0 to < 2023.1.6affected2022.0.0 to < 2022.1.19affected2021.0.0 to < 2021.1.30affected2020.0.0 to < 2020.1.38affected