High severity · published Aug 17, 2023
CVE-2023-40315
ROLE_FILESYSTEM_EDITOR Can Be Used To Escalate To ROLE_ADMIN
8.0
CVSS
2.8%
EPSS
No
On KEV
Description
In OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 and related Meridian versions, any user that has the ROLE_FILESYSTEM_EDITOR can easily escalate their privileges to ROLE_ADMIN or any other role. The solution is to upgrade to Meridian 2023.1.5 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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 87% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HO
Horizon · The OpenNMS Group
31.0.8 before 32.0.2 · source: vendor, NVD
ME
Meridian · The OpenNMS Group
2023.0.0 before 2023.1.5 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-40315
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-40315
Release Notes
https://docs.opennms.com/meridian/2023/releasenotes/changelog.html#releasenotes-changelog-Meridian-2023.1.5
Patch
https://github.com/OpenNMS/opennms/pull/6250
More from Horizon
9.1
CVE-2026-111235
OpenNMS REST authorization bypass via non-canonical HTTP method
8.8
CVE-2023-40313
Disable BeanShell Interpreter Remote Server Mode
8.2
CVE-2026-89054
OpenNMS missing authorization on /api/v2 PATCH endpoints allows unauthenticated configuration changes
8.0
CVE-2023-40612
Authenticated XXE Injection Via The File Editor
8.0
CVE-2023-0872
ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users