CVE-2021-38899 in Cloud Pak for Data
Summary
by MITRE • 09/20/2021
IBM Cloud Pak for Data 2.5 could allow a local user with special privileges to obtain highly sensitive information. IBM X-Force ID: 209575.
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Analysis
by VulDB Data Team • 09/29/2021
This vulnerability exists within IBM Cloud Pak for Data version 2.5, a comprehensive data and AI platform designed for enterprise environments. The flaw represents a local information disclosure issue that can be exploited by attackers who already possess special privileges within the system. The vulnerability stems from inadequate access controls and privilege validation mechanisms that fail to properly restrict information flow to authorized users only. Attackers with elevated privileges can leverage this weakness to extract sensitive data that should remain confidential, potentially compromising the integrity and confidentiality of the entire platform.
The technical nature of this vulnerability aligns with CWE-284, which describes improper access control issues where systems fail to properly enforce access restrictions. The flaw specifically manifests when authenticated users with special privileges attempt to access resources or data that should be restricted to higher-privilege users or system components. This represents a classic case of privilege escalation or information exposure where the system's authorization mechanisms are insufficient to prevent unauthorized data access. The vulnerability impacts the platform's security model by creating potential data leakage pathways that could expose critical system information, configuration details, or sensitive user data to malicious actors within the trusted environment.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable more sophisticated attacks by providing attackers with additional intelligence about the system's configuration, user permissions, or data structures. An attacker with access to special privileges can use this vulnerability to map the system's security landscape, identify additional attack vectors, or gather information that could be used for further compromise. This weakness particularly affects enterprise environments where Cloud Pak for Data serves as a central hub for data processing and analytics, making the potential exposure of sensitive information especially damaging. The vulnerability can facilitate reconnaissance activities that would otherwise be blocked by proper access controls, effectively weakening the overall security posture of the platform.
Organizations should implement immediate mitigations including thorough access control reviews, privilege validation enforcement, and regular security assessments of their Cloud Pak for Data deployments. The recommended approach involves applying IBM's security patches and updates as soon as they become available, implementing additional monitoring for unusual access patterns, and conducting privilege audits to ensure that special user accounts have appropriate access levels. Security teams should also consider implementing network segmentation to limit the potential impact of compromised accounts and establish enhanced logging mechanisms to detect unauthorized information access attempts. This vulnerability demonstrates the critical importance of maintaining robust access control mechanisms even within trusted environments where users already possess elevated privileges.