CVE-2018-1431 in Spectrum Scale
Summary
by MITRE
A vulnerability in GSKit affects IBM Spectrum Scale 4.1.1, 4.2.0, 4.2.1, 4.2.3, and 5.0.0 that could allow a local attacker to obtain control of the Spectrum Scale daemon and to access and modify files in the Spectrum Scale file system, and possibly to obtain administrator privileges on the node. IBM X-Force ID: 139240.
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Analysis
by VulDB Data Team • 03/27/2023
The vulnerability identified as CVE-2018-1431 represents a critical security flaw within the GSKit component of IBM Spectrum Scale storage systems. This issue specifically affects versions 4.1.1, 4.2.0, 4.2.1, 4.2.3, and 5.0.0, creating a significant attack surface for local adversaries who can exploit the weakness to gain elevated privileges and compromise the integrity of the storage infrastructure. The vulnerability stems from improper privilege handling within the GSKit library that governs cryptographic services for Spectrum Scale operations.
The technical exploitation of this vulnerability occurs through a privilege escalation mechanism that allows local attackers to manipulate the Spectrum Scale daemon processes. When the daemon executes with elevated privileges, the flaw enables an attacker to inject malicious code or manipulate the execution flow to gain administrative control over the node. This represents a classic privilege escalation vulnerability that aligns with CWE-269, which focuses on insufficient privileges for critical resources. The attack vector specifically targets the daemon's interaction with cryptographic functions, where inadequate input validation and privilege separation create opportunities for malicious code execution.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with comprehensive control over the affected Spectrum Scale nodes. Once compromised, attackers can access, modify, or delete files within the distributed file system, potentially leading to data corruption, information disclosure, or complete system compromise. The vulnerability's potential to escalate to administrator privileges means that attackers can modify system configurations, install malicious software, or establish persistent access points within the storage infrastructure. This type of attack directly violates the principle of least privilege and undermines the security posture of enterprise storage environments that rely on Spectrum Scale for critical data operations.
Organizations implementing IBM Spectrum Scale must prioritize immediate remediation through the application of vendor-provided patches and updates to address this vulnerability. The mitigation strategy should include comprehensive monitoring of daemon processes and network traffic for suspicious activities that might indicate exploitation attempts. Security teams should implement additional controls such as mandatory access controls, regular privilege audits, and enhanced logging of administrative activities to detect potential compromise. According to ATT&CK framework category T1068, this vulnerability maps to privilege escalation techniques that attackers often use to gain system-level access, making it essential for security operations centers to monitor for these specific attack patterns. The vulnerability also aligns with ATT&CK technique T1078 which covers valid accounts and legitimate credentials, as attackers may attempt to leverage compromised administrative access to maintain persistent presence within the storage infrastructure. Organizations should conduct thorough risk assessments to determine the attack surface and implement network segmentation to limit potential lateral movement within their storage environments.