CVE-2017-1612 in WebSphere MQ
Summary
by MITRE
IBM WebSphere MQ 7.0, 7.1, 7.5, 8.0, and 9.0 service trace module could be used to execute untrusted code under 'mqm' user. IBM X-Force ID: 132953.
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Analysis
by VulDB Data Team • 01/29/2021
The vulnerability identified as CVE-2017-1612 represents a critical code execution flaw within IBM WebSphere MQ versions 7.0, 7.1, 7.5, 8.0, and 9.0. This security weakness specifically targets the service trace module functionality, which is designed to provide diagnostic and monitoring capabilities for the messaging queue system. The flaw allows attackers to execute arbitrary code with elevated privileges under the mqm user account, which is the dedicated system user account that IBM WebSphere MQ operates under. This privilege escalation vulnerability directly violates fundamental security principles by enabling unauthorized code execution in a privileged context.
The technical implementation of this vulnerability stems from inadequate input validation and improper handling of trace data within the WebSphere MQ service trace module. When the system processes trace information, it fails to properly sanitize or validate external inputs that could be manipulated by malicious actors. This weakness falls under CWE-20, which describes improper input validation, and specifically aligns with CWE-78, which addresses OS command injection vulnerabilities. The flaw enables attackers to inject malicious commands that are then executed within the context of the mqm user account, providing them with significant control over the messaging infrastructure and potentially leading to broader system compromise.
The operational impact of this vulnerability extends far beyond simple code execution, as it fundamentally undermines the security posture of organizations relying on IBM WebSphere MQ for critical messaging operations. Attackers who successfully exploit this vulnerability can manipulate message queues, intercept sensitive data flows, modify message content, and potentially gain access to downstream systems that depend on the messaging infrastructure. The mqm user account typically has extensive privileges within the WebSphere MQ environment, including access to message stores, configuration files, and administrative functions. This makes the vulnerability particularly dangerous as it can lead to complete system compromise and data breaches. According to ATT&CK framework, this vulnerability maps to T1059 (Command and Scripting Interpreter) and T1068 (Exploitation for Privilege Escalation) techniques, demonstrating how attackers can leverage service trace functionality to achieve their objectives.
Organizations should implement immediate mitigations including applying the relevant IBM security patches and hotfixes released to address this vulnerability. System administrators should also consider restricting access to the service trace functionality and implementing network segmentation to limit exposure. Additional protective measures include monitoring for unusual trace activity, implementing least privilege principles for mqm user accounts, and conducting regular security assessments of the messaging infrastructure. The vulnerability highlights the critical importance of validating all inputs within service modules and demonstrates how seemingly diagnostic features can become attack vectors when proper security controls are not implemented. Organizations should also consider implementing application-level firewalls and intrusion detection systems to monitor for exploitation attempts targeting the service trace functionality.