CVE-2012-4818 in InfoSphere Information Server
Summary
by MITRE • 09/29/2022
IBM InfoSphere Information Server 8.1, 8.5, and 8,7 could allow a remote authenticated attacker to obtain sensitive information, caused by improper restrictions on directories. An attacker could exploit this vulnerability via the DataStage application to load or import content functionality to view arbitrary files on the system.
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Analysis
by VulDB Data Team • 10/25/2022
IBM InfoSphere Information Server versions 8.1, 8.5, and 8.7 contain a directory traversal vulnerability that enables remote authenticated attackers to access sensitive system files through the DataStage application's content loading or importing functionality. This weakness stems from insufficient input validation and access control mechanisms that fail to properly restrict directory paths during file operations. The vulnerability aligns with CWE-22, known as "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", which represents one of the most prevalent and dangerous web application security flaws. Attackers can exploit this issue by crafting malicious file paths that traverse directories using sequences such as "../" or "..\\", allowing them to bypass normal access controls and retrieve files that should remain restricted. The security implications extend beyond simple information disclosure, as the vulnerability may expose configuration files, database credentials, application source code, or other sensitive artifacts that could facilitate further exploitation. This flaw particularly affects environments where InfoSphere Information Server is deployed with default configurations or where administrative privileges have been granted to untrusted users through the DataStage application interface.
The operational impact of CVE-2012-4818 manifests in several critical areas that compromise the overall security posture of affected systems. Remote authenticated attackers can leverage this vulnerability to access system-level files, potentially including user credentials, database connection strings, or application configuration data that could be used for privilege escalation attacks. The vulnerability's exploitation requires only authentication to the DataStage application, making it particularly dangerous in environments where multiple users have access to the platform. This weakness creates opportunities for attackers to map the file system structure, identify sensitive components, and gather intelligence for more sophisticated attacks. The exposure of sensitive information through this vulnerability can lead to data breaches, regulatory compliance violations, and significant financial losses for organizations relying on InfoSphere Information Server for data integration and management. Additionally, the presence of such a flaw may indicate broader security weaknesses in the application's architecture, potentially exposing other components to similar vulnerabilities.
Organizations affected by this vulnerability should implement immediate mitigations including restricting file import and export functionality to trusted users only, implementing proper input validation for all file path parameters, and applying the latest security patches provided by IBM. The remediation process should involve reviewing and tightening access controls for the DataStage application, ensuring that only authorized personnel can perform content loading operations. Network segmentation and firewall rules should be configured to limit access to InfoSphere Information Server components, particularly those handling file operations. Security monitoring should be enhanced to detect unusual file access patterns or attempts to traverse directory structures. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, specifically T1078 for valid accounts and T1566 for phishing with a focus on information gathering. Organizations should also consider implementing automated vulnerability scanning tools to identify similar path traversal issues in other applications within their environment. The remediation strategy must include comprehensive testing of the applied patches to ensure they do not introduce regressions in application functionality while maintaining the security improvements necessary to prevent exploitation of this and related vulnerabilities.