CVE-2016-3013 in WebSphere MQ
Summary
by MITRE
IBM WebSphere MQ 8.0 could allow an authenticated user to crash the MQ channel due to improper data conversion handling. IBM Reference #: 1998661.
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Analysis
by VulDB Data Team • 08/16/2020
IBM WebSphere MQ version 8.0 contains a vulnerability that enables authenticated users to cause a denial of service condition by crashing MQ channels through improper data conversion handling. This flaw resides in the message queue management system's processing of data conversion operations, where insufficient validation and error handling mechanisms allow maliciously crafted data to trigger unexpected system behavior. The vulnerability specifically affects the channel communication layer where data is transformed between different formats during message transmission, creating a pathway for authenticated attackers to exploit the system's data conversion routines.
The technical implementation of this vulnerability involves the manipulation of data conversion parameters within the MQ channel framework, where the system fails to properly validate input data before processing. When an authenticated user submits specially crafted data that triggers a conversion error, the system's exception handling routines are unable to gracefully manage the error condition, resulting in the channel termination. This represents a classic case of inadequate error handling and input validation that falls under CWE-248, or "Uncaught Exception," where the system does not properly handle exceptional conditions that occur during data processing operations.
The operational impact of this vulnerability extends beyond simple service disruption as it affects the reliability and availability of critical messaging infrastructure. Organizations relying on WebSphere MQ for enterprise message queuing may experience unexpected channel failures that could interrupt business processes depending on message flow continuity. The vulnerability's authenticated nature means that only users with valid credentials can exploit it, but this limitation does not reduce the potential damage since legitimate users typically have sufficient privileges to perform operations that could affect system stability. This scenario aligns with ATT&CK technique T1499.004, which describes the use of application or system binaries to perform denial of service attacks.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and robust error handling mechanisms within the data conversion processes. Organizations should apply the official IBM security patches and updates that address the specific data conversion handling issues in WebSphere MQ 8.0. Additionally, implementing network segmentation and access controls can limit the potential impact of authenticated exploitation attempts. System monitoring should be enhanced to detect unusual channel termination patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of proper error handling in middleware systems and highlights the need for thorough testing of data conversion routines under various input conditions to prevent similar issues in future implementations.