CVE-2018-1656 in Enterprise Manager Base Platform
Summary
by MITRE
The IBM Java Runtime Environment's Diagnostic Tooling Framework for Java (DTFJ) (IBM SDK, Java Technology Edition 6.0 , 7.0, and 8.0) does not protect against path traversal attacks when extracting compressed dump files. IBM X-Force ID: 144882.
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Analysis
by VulDB Data Team • 08/31/2023
The vulnerability identified as CVE-2018-1656 affects the IBM Java Runtime Environment's Diagnostic Tooling Framework which is part of IBM SDK, Java Technology Edition versions 6.0, 7.0, and 8.0. This security flaw resides within the handling of compressed dump files and represents a critical path traversal vulnerability that could enable unauthorized access to sensitive system resources. The issue specifically manifests when the DTFJ component processes compressed dump files, failing to properly validate file paths and potentially allowing malicious actors to manipulate the extraction process to access files outside the intended directory structure.
This vulnerability stems from inadequate input validation within the file extraction mechanism of the diagnostic framework. When processing compressed archive files containing dump data, the system does not sufficiently sanitize the file paths contained within these archives. Attackers can craft specially formatted compressed files that contain entries with path traversal sequences such as "../" or "..\\", allowing them to write files to arbitrary locations on the system or read files from unexpected directories. The flaw operates at the file system level where the extraction process does not properly resolve or validate relative paths, creating an attack surface that can be exploited by malicious actors with access to the system or the ability to upload controlled compressed files.
The operational impact of this vulnerability is significant across multiple threat scenarios. An attacker with the ability to upload or influence the contents of compressed dump files could potentially overwrite critical system files, inject malicious code into the Java runtime environment, or extract sensitive data from the system. The vulnerability particularly affects environments where dump files are generated and processed automatically, such as in production monitoring or debugging scenarios where the system may process dumps from untrusted sources. This could lead to privilege escalation, data exfiltration, or system compromise depending on the permissions of the Java process running the DTFJ component. The vulnerability aligns with CWE-22 Path Traversal and follows attack patterns documented in the MITRE ATT&CK framework under techniques involving privilege escalation and persistence mechanisms.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of IBM's security patches and updates for the affected Java SDK versions. System administrators should implement strict file validation controls for any compressed files processed by Java applications, particularly in environments where dump files might originate from untrusted sources. Additional mitigations include restricting write permissions for Java processes, implementing file integrity monitoring, and conducting regular security assessments of diagnostic tooling frameworks. The vulnerability demonstrates the importance of proper input validation in security-critical components and highlights the need for comprehensive security testing of file processing mechanisms within runtime environments. Organizations should also consider implementing network segmentation and access controls to limit exposure of systems running affected Java versions and monitor for suspicious file extraction activities.