CVE-2020-36611 in Tuning Manager
Summary
by MITRE • 01/17/2023
Incorrect Default Permissions vulnerability in Hitachi Tuning Manager on Linux (Hitachi Tuning Manager server, Hitachi Tuning Manager - Agent for RAID, Hitachi Tuning Manager - Agent for NAS, Hitachi Tuning Manager - Agent for SAN Switch components) allows local users to read and write specific files.This issue affects Hitachi Tuning Manager: before 8.8.5-00.
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Analysis
by VulDB Data Team • 02/09/2023
The CVE-2020-36611 vulnerability represents a critical incorrect default permissions flaw within Hitachi Tuning Manager components running on Linux systems. This vulnerability specifically impacts the Hitachi Tuning Manager server and its various agent components including RAID, NAS, and SAN Switch agents. The flaw stems from improper file permission configurations that grant local users unauthorized access to sensitive system files. Such misconfigurations create a privilege escalation vector where unprivileged local users can manipulate critical system resources that should only be accessible to authorized administrative personnel.
This vulnerability operates under the broader category of improper access control mechanisms, which aligns with CWE-284 Access Control Issues and represents a fundamental breakdown in the principle of least privilege. The affected Hitachi Tuning Manager versions prior to 8.8.5-00 contain default file permissions that are overly permissive, allowing local users to both read and write specific files that contain configuration data, system parameters, or potentially sensitive operational information. The impact extends beyond simple information disclosure to include potential system integrity compromise through unauthorized modifications.
The operational impact of this vulnerability is significant for organizations relying on Hitachi Tuning Manager for storage management and system monitoring. Local users who exploit this vulnerability can gain unauthorized access to system configuration files, potentially enabling them to modify critical parameters that affect storage performance, system behavior, or security settings. This creates a potential attack surface that could be leveraged for persistent access or to disrupt normal system operations. The vulnerability is particularly concerning in enterprise environments where multiple users may have local access to managed systems.
Organizations should immediately implement mitigations including upgrading to Hitachi Tuning Manager version 8.8.5-00 or later, which contains the necessary permission fixes. Additionally, system administrators should conduct thorough permission audits of all Hitachi Tuning Manager related files and directories, ensuring that default configurations are properly secured. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting local account access and permission manipulation. Regular security assessments should verify that no other similar permission issues exist within the Hitachi Tuning Manager environment, and that proper file system permissions are maintained across all components. Network segmentation and access controls should complement these fixes to limit potential exploitation avenues.