CVE-2023-0868 : Security Advisory and Response

This CVE-2023-0868 was published by OpenNMS on February 23, 2023, addressing a reflected cross-site scripting vulnerability in multiple versions of OpenNMS Meridian and Horizon.

Understanding CVE-2023-0868

This vulnerability could allow attackers to steal session cookies by exploiting the reflected cross-site scripting present in the graph results of OpenNMS Meridian and Horizon.

What is CVE-2023-0868?

The CVE-2023-0868 vulnerability pertains to a reflected cross-site scripting issue that exists in various versions of OpenNMS Meridian and Horizon software. Attackers could leverage this vulnerability to gain unauthorized access to steal session cookies.

The Impact of CVE-2023-0868

The impact of this vulnerability is significant, with attackers potentially being able to access sensitive session information, posing a risk to the confidentiality and integrity of user data.

Technical Details of CVE-2023-0868

The vulnerability is scored with a CVSS v3.1 Base Score of 6.7, indicating a medium severity issue. The attack complexity is low, requiring low privileges and user interaction. The attack vector is through an adjacent network.

Vulnerability Description

The vulnerability involves improper input validation leading to a cross-site scripting attack in the graph results of OpenNMS Meridian and Horizon.

Affected Systems and Versions

OpenNMS Meridian versions prior to 2023.1.0 and Horizon versions less than or equal to 31.0.3 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability can be exploited by attackers to execute malicious scripts within the graph results of the affected OpenNMS products.

Mitigation and Prevention

To mitigate the CVE-2023-0868 vulnerability, immediate actions need to be taken to secure the affected systems and prevent potential exploitation by malicious actors.

Immediate Steps to Take

Users are advised to upgrade to Meridian 2023.1.0 or newer versions, or Horizon 31.0.4 to address the vulnerability. Additionally, it is recommended to follow the installation instructions that specify deploying these products within private networks only.

Long-Term Security Practices

In the long term, organizations should implement secure coding practices, perform regular security assessments, and conduct security training for developers to prevent cross-site scripting vulnerabilities.

Patching and Updates

Regularly applying software patches, updates, and security fixes provided by OpenNMS is crucial to maintaining the security and integrity of the systems running Meridian and Horizon. Upgrade to the latest version of the affected software to ensure protection against known vulnerabilities.