CVE-2018-1723 in Spectrum Scale
Summary
by MITRE
IBM Spectrum Scale 4.1.1.0, 4.1.1.20, 4.2.0.0, 4.2.3.10, 5.0.0 and 5.0.1.2 could allow a GPFS command line utility allows an unprivileged, authenticated user with access to a GPFS node to read arbitrary files available on this node. IBM X-Force ID: 147373.
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Analysis
by VulDB Data Team • 05/23/2023
IBM Spectrum Scale represents a high-performance distributed file system that requires careful security considerations due to its widespread deployment in enterprise environments. The vulnerability described in CVE-2018-1723 specifically targets the GPFS command line utilities and affects multiple versions including 4.1.1.0, 4.1.1.20, 4.2.0.0, 4.2.3.10, 5.0.0, and 5.0.1.2. This flaw enables a significant privilege escalation scenario where unprivileged users who have authenticated access to a GPFS node can exploit the system to read arbitrary files that are accessible on that particular node. The vulnerability stems from inadequate access controls within the command line utilities that should have enforced proper authorization checks before allowing file operations. This issue directly maps to CWE-284, which addresses improper access control in software systems, and represents a critical weakness in the principle of least privilege enforcement. The attack vector requires an authenticated user who already has access to the GPFS node, but the impact extends far beyond what should be permitted under normal security assumptions.
The operational impact of this vulnerability is substantial as it undermines the fundamental security boundaries of the distributed file system. An attacker who gains access to a single node within a GPFS cluster can potentially read sensitive data from other files on that same node, including configuration files, user data, and potentially system credentials. This creates a serious risk for organizations that rely on Spectrum Scale for storing confidential information across their infrastructure. The vulnerability affects the integrity and confidentiality of data stored within the file system, as it allows unauthorized data reading without proper authorization checks. Security professionals should note that this issue aligns with ATT&CK technique T1005, which covers data from local system, and T1078, which involves valid accounts for persistence. The flaw essentially creates a backdoor for data exfiltration that bypasses normal file system access controls, making it particularly dangerous for environments where sensitive data is stored across multiple nodes.
Organizations affected by this vulnerability should implement immediate mitigations to protect their Spectrum Scale deployments. The most effective approach involves applying the official IBM security patches that address the access control flaw in the command line utilities. System administrators should also consider implementing additional network segmentation measures to limit node access and reduce the attack surface. Monitoring for unauthorized access attempts to GPFS command line utilities should be enhanced, particularly focusing on unusual file reading patterns from system nodes. The vulnerability demonstrates the importance of proper input validation and access control enforcement in distributed systems, and serves as a reminder that even authenticated users require appropriate privilege checks. Organizations should conduct comprehensive security assessments of their GPFS implementations to identify any similar access control weaknesses and ensure that all command line tools properly enforce authorization boundaries. This vulnerability underscores the critical need for regular security updates and the implementation of defense-in-depth strategies in enterprise storage environments.