In OpenNMS Horizon 31.0.8 and earlier versions up to 32.0.2, as well as related Meridian versions, any user possessing the ROLE_FILESYSTEM_EDITOR can exploit their privileges to gain admin access. This vulnerability allows unauthorized users to escalate their privileges to ROLE_ADMIN or any other role, posing significant risks to the integrity and confidentiality of the system. Organizations using these versions are strongly advised to upgrade to Meridian 2023.1.5 or Horizon 32.0.2 or newer, as these versions address this critical issue.
The vulnerability has a CVSS score of 5.3, categorized as medium severity. It is important to recognize that the attack vector is limited to adjacent networks, but the potential for privilege escalation remains a serious concern. Organizations must ensure that Horizon and Meridian installations are confined to private networks and are not directly accessible from the Internet.
Organizations should prioritize patching immediately. Failure to address this vulnerability may result in unauthorized administrative access, leading to further exploitation and potential data breaches.
The OpenNMS team extends gratitude to Erik Wynter for reporting this vulnerability, which underscores the importance of community involvement in improving software security.
Vulnerability Details
This vulnerability allows any user with the ROLE_FILESYSTEM_EDITOR to escalate their privileges to ROLE_ADMIN or any other role. The affected products include OpenNMS Horizon version 31.0.8 and earlier versions up to 32.0.2, as well as related Meridian versions up to 2023.1.5. The official CVSS score from NVD indicates a high severity level of 8.0, with a detailed vector string of CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Technical Analysis
The root cause of this vulnerability stems from improper privilege checks that allow users with lower privileges to escalate their permissions without appropriate validation. The attack vector is classified as adjacent network, meaning that an attacker would need to be on the same network segment as the vulnerable system. The complexity of the attack is considered high, as it requires specific conditions to be met for exploitation. Privileges required are high, indicating that an attacker must already have significant access to the system. No user interaction is required, which further amplifies the risk.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive functions and data, potentially leading to data breaches and loss of integrity. The blast radius could extend to any user with ROLE_FILESYSTEM_EDITOR across multiple installations, increasing the urgency for organizations to patch their systems. Given the CVSS score, organizations should address this vulnerability in priority patch cycles.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
Versions affected include OpenNMS Horizon 31.0.8 and earlier up to 32.0.2, along with Meridian versions prior to 2023.1.5. Organizations should confirm their systems are updated to the latest versions to mitigate this vulnerability.
Mitigation & Remediation
Organizations should upgrade to Meridian 2023.1.5 or Horizon 32.0.2 or newer to remediate this vulnerability. Workarounds may involve restricting access to the ROLE_FILESYSTEM_EDITOR from untrusted networks. Further, organizations should implement configuration hardening to limit exposure. Regular monitoring and penetration testing can also help identify similar vulnerabilities in future.
For additional security assessments, organizations can utilize penetration testing services to validate their defenses.
Detection Guidance
To detect exploitation attempts, organizations should monitor logs for unexpected privilege escalation events, particularly from users with ROLE_FILESYSTEM_EDITOR. Behavioral anomalies, such as unauthorized access attempts to admin functions, should also be closely observed.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability emphasizes the need for robust access controls and regular audits of user roles within systems. It represents a pattern where misconfigured permissions can lead to severe security risks. Security teams should take this as a lesson to regularly evaluate their privilege management strategies and ensure that unnecessary privileges are not granted to users.
For more insights on security best practices, consider reviewing our penetration testing methodology and related resources.
Organizations should also consider implementing a vulnerability management program to proactively address potential weaknesses.
Lastly, considering the evolving threat landscape, engaging in continuous penetration testing can further strengthen security postures against emerging vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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