CVE-2023-40313 in Horizon
Summary
by MITRE • 08/17/2023
A BeanShell interpreter in remote server mode runs in OpenMNS Horizon versions earlier than 32.0.2 and in related Meridian versions which could allow arbitrary remote Java code execution. 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.
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Analysis
by VulDB Data Team • 10/09/2024
The vulnerability identified as CVE-2023-40313 represents a critical remote code execution flaw within the BeanShell interpreter component of OpenMNS Horizon and related Meridian software versions. This vulnerability exists in remote server mode implementations where the interpreter is exposed to external network access, creating an avenue for malicious actors to execute arbitrary Java code on affected systems. The flaw stems from insufficient input validation and sanitization within the BeanShell processing pipeline, allowing attackers to inject malicious code through crafted requests that are then interpreted and executed by the vulnerable server components.
The technical exploitation of this vulnerability occurs through the BeanShell interpreter's ability to evaluate and execute Java code snippets remotely. When the server operates in remote mode, it accepts input from network connections and processes this input through the BeanShell engine without adequate security boundaries or code isolation mechanisms. This design flaw aligns with CWE-94, which describes insufficient input validation and the execution of code from untrusted sources. Attackers can leverage this vulnerability to gain complete control over affected systems, potentially leading to data exfiltration, system compromise, or further lateral movement within network environments.
The operational impact of CVE-2023-40313 extends beyond simple remote code execution, as it fundamentally undermines the security posture of organizations using affected Meridian and Horizon versions. Systems exposed to the internet or improperly isolated networks become immediate targets for exploitation, with the potential for widespread compromise across enterprise environments. The vulnerability particularly affects industrial control systems and monitoring platforms where these software versions are commonly deployed, creating risk for critical infrastructure operations. Organizations may experience unauthorized access to sensitive operational data, disruption of critical processes, and potential regulatory compliance violations that could result in significant financial and reputational damage.
Security mitigations for this vulnerability primarily involve immediate software upgrades to the patched versions specified in the advisory, including Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38, or Horizon 32.0.2 and newer releases. Organizations should also implement network segmentation strategies to ensure these systems are not directly accessible from the internet, following the vendor's own recommendations for deployment within private networks. Additional protective measures include implementing network access controls, monitoring for suspicious network traffic patterns, and conducting comprehensive vulnerability assessments of all affected systems. The remediation process should also include reviewing and updating security policies to prevent future exposure of similar components to untrusted network access, aligning with ATT&CK technique T1190 for exploiting vulnerabilities in remote services and T1059 for executing commands through interpreted languages.