CVE-2023-0871

Summary

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 Software

VendorProductVersion RangeStatus
The OpenNMS GroupHorizon31.0.8 < 32.0.2affected
The OpenNMS GroupHorizon0 < 31.0.8unknown
The OpenNMS GroupMeridian2023.0.0 < 2023.1.6affected
The OpenNMS GroupMeridian2022.0.0 < 2022.1.19affected
The OpenNMS GroupMeridian2021.0.0 < 2021.1.30affected
The OpenNMS GroupMeridian2020.0.0 < 2020.1.38affected

Weaknesses

  • CWE-611: CWE-611 Improper Restriction of XML External Entity Reference

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References