CVE-2017-1468 in InfoSphere Information Server
Summary
by MITRE
IBM InfoSphere Information Server 9.1, 11.3, and 11.5 could allow a local user to gain elevated privileges by placing arbitrary files in installation directories. IBM X-force ID: 128467.
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Analysis
by VulDB Data Team • 06/15/2024
This vulnerability exists in IBM InfoSphere Information Server versions 9.1, 11.3, and 11.5, representing a privilege escalation flaw that can be exploited by local attackers. The vulnerability stems from insufficient file permission controls and insecure directory handling mechanisms within the installation process. An attacker with local access can manipulate the system by placing malicious files in specific installation directories, thereby gaining elevated privileges that should be restricted to authorized administrative users only. This type of vulnerability falls under the CWE-73 weakness category, which specifically addresses 'External Control of File Name or Path', indicating that the application allows external input to influence file system operations without proper validation or sanitization.
The technical exploitation of this vulnerability involves a local attacker who can leverage the insecure file placement mechanisms to execute code with higher privileges than initially granted. When the system processes files located in these vulnerable directories, it does not adequately verify the legitimacy or integrity of the placed files, allowing malicious code execution. This weakness creates a path for privilege escalation attacks that align with ATT&CK technique T1068, which covers 'Local Privilege Escalation'. The vulnerability is particularly concerning because it requires minimal initial access - only local system access - to potentially escalate to administrative privileges, making it a significant concern for enterprise environments where multiple users may have local login capabilities.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can lead to complete system compromise when combined with other attack vectors. An attacker who successfully exploits this vulnerability can modify core system files, install backdoors, or access sensitive data that was previously protected by proper access controls. The affected IBM InfoSphere Information Server versions represent critical enterprise data integration platforms that handle sensitive business information, making this vulnerability particularly dangerous in production environments. Organizations running these versions face potential data breaches, unauthorized system modifications, and complete loss of control over their data integration infrastructure.
Mitigation strategies for this vulnerability should focus on implementing strict file permission controls and directory access restrictions. System administrators should ensure that installation directories have proper access controls and that only authorized users can write to these locations. The recommended approach includes conducting regular security audits of installation directories, implementing file integrity monitoring systems, and applying the latest security patches provided by IBM. Additionally, organizations should consider implementing principle of least privilege access controls, ensuring that local user accounts have minimal necessary permissions and that administrative privileges are granted only when required for specific tasks. The vulnerability also underscores the importance of secure coding practices and proper input validation in system installation and update processes, aligning with industry best practices for preventing similar weaknesses in software development lifecycle.