CVE-2018-6500 in Management Center
Summary
by MITRE
A potential Directory Traversal Security vulnerability has been identified in ArcSight Management Center (ArcMC) in all versions prior to 2.81. This vulnerability could be remotely exploited to allow Directory Traversal.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 05/17/2023
The CVE-2018-6500 vulnerability represents a critical directory traversal security flaw within the ArcSight Management Center (ArcMC) platform, affecting all versions prior to 2.81. This vulnerability resides in the web application layer of the ArcSight security management solution, which is widely deployed for security information and event management across enterprise environments. The flaw stems from insufficient input validation and sanitization within the application's file handling mechanisms, specifically in how the system processes user-supplied paths and file references. This directory traversal vulnerability allows an attacker to manipulate file access requests by using special characters such as double dots and forward slashes to navigate outside the intended directory boundaries. The vulnerability is particularly concerning because ArcSight Management Center serves as a central hub for security event correlation, log management, and threat detection, making it a prime target for attackers seeking to compromise security infrastructure. When exploited, this vulnerability could enable unauthorized access to sensitive system files, configuration data, and potentially allow attackers to escalate privileges or extract confidential information from the underlying operating system. The remote exploitation capability of this vulnerability means that attackers do not require physical access to the system or local network presence to carry out attacks, significantly expanding the attack surface and potential impact.
The technical implementation of this directory traversal vulnerability can be mapped to CWE-22, which specifically addresses "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')". This weakness occurs when an application fails to properly validate and sanitize user inputs that are used to construct file paths, allowing malicious actors to traverse the file system hierarchy. In the context of ArcSight Management Center, the vulnerability manifests when the application accepts user-provided parameters without adequate filtering or normalization, enabling attackers to craft requests that bypass normal access controls. The exploitation typically involves sending specially crafted HTTP requests containing sequences like "../" or "..\" that allow navigation to parent directories, potentially accessing system files, configuration databases, or other sensitive resources that should remain protected. The vulnerability's impact extends beyond simple file access, as it could potentially lead to full system compromise if attackers can access critical system files or configuration parameters that control access permissions and authentication mechanisms. This type of vulnerability also aligns with ATT&CK technique T1083, which covers "File and Directory Discovery", as attackers could use this vulnerability to enumerate system resources and identify valuable targets for further exploitation.
The operational impact of CVE-2018-6500 is substantial for organizations relying on ArcSight Management Center for security operations, as it represents a fundamental weakness in the platform's access control mechanisms. Organizations using affected versions of ArcSight are at risk of unauthorized data access, potential system compromise, and exposure of sensitive security information that could be leveraged for further attacks. The vulnerability could enable attackers to access log files containing sensitive information, configuration files that may reveal system architecture details, or even database files that store user credentials and security policies. In enterprise environments where ArcSight is used for centralized security monitoring, this vulnerability could provide attackers with a foothold to escalate privileges or move laterally within the network, potentially compromising multiple systems. The remote nature of the exploit means that organizations are vulnerable regardless of their network segmentation or firewall configurations, as the vulnerability can be exploited from outside the network perimeter. Security teams face the challenge of identifying and remediating this vulnerability without disrupting ongoing security monitoring operations, as the ArcSight platform is typically critical for maintaining security posture across the organization. The vulnerability also highlights the importance of regular security updates and patch management processes, as many organizations may have deployed the affected versions without immediate awareness of the security risks involved. Organizations should consider implementing network segmentation, monitoring for suspicious file access patterns, and ensuring that all ArcSight components are updated to version 2.81 or later to mitigate this vulnerability.
Organizations should implement several mitigations to address this vulnerability including immediate patching to version 2.81 or later of ArcSight Management Center, which contains the necessary fixes for the directory traversal issue. Network-based mitigations such as implementing web application firewalls, restricting external access to the ArcSight Management Center, and deploying intrusion detection systems that can identify and block directory traversal attempts should also be considered. Additionally, organizations should conduct thorough security assessments to identify any potential unauthorized access that may have occurred before patching, as the vulnerability could have been exploited to gain access to sensitive system information. System administrators should also review and tighten file access controls, implement proper input validation for all user-supplied data, and ensure that the application runs with minimal required privileges. Regular security testing including vulnerability scanning and penetration testing should be conducted to identify similar weaknesses in other components of the security infrastructure. The remediation process should include comprehensive testing to ensure that the patch does not introduce compatibility issues with existing security policies or monitoring workflows, as ArcSight Management Center is typically integrated with various security tools and systems within the enterprise environment. Organizations should also update their incident response procedures to account for potential exploitation of this vulnerability and establish monitoring procedures to detect anomalous file access patterns that could indicate exploitation attempts.