CVE-2019-4335 in Watson Studio Local
Summary
by MITRE
IBM Watson Studio Local 1.2.3 stores key files in the user's home directory which could be obtained by another local user. IBM X-Force ID: 161413.
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Analysis
by VulDB Data Team • 03/18/2024
IBM Watson Studio Local version 1.2.3 contains a critical security flaw that allows local privilege escalation through improper file storage practices. The vulnerability stems from the application's tendency to store sensitive key files within the user's home directory structure, creating an exploitable condition where unauthorized local users can access these critical components. This design flaw fundamentally violates secure coding principles and proper privilege separation mechanisms that should prevent one user from accessing another user's sensitive data.
The technical implementation of this vulnerability involves the application's failure to implement proper file system permissions and access controls for sensitive cryptographic keys and authentication materials. When Watson Studio Local operates within a multi-user environment, these key files become accessible to any local user who can traverse the home directory structure. The flaw represents a classic case of insecure direct object reference and inadequate access control enforcement, where the application does not properly isolate user data and system credentials. This vulnerability can be exploited through various attack vectors including privilege escalation, credential theft, and unauthorized system access.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential system compromise and unauthorized access to Watson Studio's core functionalities. An attacker with local access can extract encryption keys, authentication tokens, and other sensitive materials that could enable them to impersonate legitimate users or gain administrative privileges. The vulnerability particularly affects environments where multiple users share the same system, making it a significant concern for enterprise deployments and development environments. This flaw directly impacts the confidentiality and integrity of the system, potentially allowing attackers to manipulate or extract sensitive data from the Watson Studio Local environment.
Mitigation strategies should focus on implementing proper file system permissions and access controls to prevent unauthorized access to sensitive key files. Organizations should immediately restrict file permissions on the home directory locations where these keys are stored, ensuring that only authorized processes and users can access these critical components. The recommended approach involves implementing mandatory access controls and proper privilege separation mechanisms to prevent cross-user access to sensitive data. Additionally, system administrators should consider implementing file integrity monitoring solutions to detect unauthorized access attempts and ensure proper segregation of user data. This vulnerability aligns with CWE-276, which addresses improper file permissions, and represents a clear violation of the principle of least privilege as outlined in various cybersecurity frameworks including the MITRE ATT&CK framework's privilege escalation techniques.