title: ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users
description: The Horizon REST API includes a users endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to elevation of privilege. 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 for reporting this issue.
problem types: CWE-269 Improper Privilege Management
affected:
{
defaultStatus: unaffected
platforms: [Windows, MacOS, Linux]
product: Horizon
repo: https://github.com/OpenNMS/opennms
vendor: The OpenNMS Group
versions:
lessThan: 32.0.2, status: affected, version: 31.0.8, versionType: maven
lessThan: 31.0.8, status: unknown, version: 0, versionType: maven
}
{
defaultStatus: unaffected
platforms: [Windows, MacOS, Linux]
product: Meridian
repo: https://github.com/OpenNMS/opennms
vendor: The OpenNMS Group
versions:
lessThanOrEqual: 2020.1.37, status: affected, version: 2020.0.0, versionType: maven
lessThanOrEqual: 2021.1.29, status: affected, version: 2021.0.0, versionType: maven
lessThanOrEqual: 2022.1.18, status: affected, version: 2022.0.0, versionType: maven
lessThanOrEqual: 2023.1.5, status: affected, version: 2023.0.0, versionType: maven
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: LOW
baseScore: 8.2
baseSeverity: HIGH
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L
version: 3.1
]
format: CVSS
scenarios: GENERAL. Score based on the assumption that Horizon and Meridian are installed on internally protected networks and not exposed to the Internet, per installation instructions.