CVE-2012-4863 in WebSphere
Summary
by MITRE
IBM WebSphere MQ 7.1 and 7.5: Queue manager has a DoS vulnerability
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Analysis
by VulDB Data Team • 04/19/2021
IBM WebSphere MQ version 7.1 and 7.5 contains a denial of service vulnerability that stems from improper handling of malformed input within the queue manager component. This vulnerability allows an unauthenticated attacker to send specially crafted messages that cause the queue manager to crash or become unresponsive, effectively disrupting message queuing services. The flaw exists in the message processing logic where the system fails to properly validate incoming message formats before attempting to process them, creating a condition where malformed data can trigger unexpected behavior in the queue manager's memory management and processing routines.
The technical implementation of this vulnerability involves the queue manager's failure to implement proper input sanitization and boundary checking mechanisms. When malformed messages are received, the system's message parsing routines can encounter unexpected data structures that lead to memory corruption or infinite loops in the processing logic. This behavior aligns with CWE-129, which describes improper validation of array indices, and CWE-125, which covers out-of-bounds read conditions. The vulnerability can be exploited through network-based attacks where an attacker sends carefully constructed messages to the queue manager service, potentially causing the entire messaging infrastructure to become unavailable.
The operational impact of this vulnerability extends beyond simple service disruption as it can affect critical business processes that depend on message queuing for communication between applications and systems. Organizations using IBM WebSphere MQ in production environments face significant risk of operational downtime, data processing delays, and potential business continuity issues when this vulnerability is exploited. The attack vector requires minimal privileges and can be executed remotely, making it particularly dangerous in environments where the queue manager is exposed to untrusted networks or internet-facing services.
From an attack perspective, this vulnerability maps to several techniques described in the MITRE ATT&CK framework including T1499 for network denial of service and T1071 for application layer protocols. The vulnerability can be leveraged as part of broader attack campaigns where initial access is gained through other means, and this DoS capability is used to disable security monitoring systems or disrupt business operations. Organizations should implement network segmentation to limit access to queue manager services, deploy intrusion detection systems to monitor for exploitation attempts, and maintain current patch management procedures to address this vulnerability. Additionally, monitoring queue manager logs for unusual patterns and implementing redundant messaging infrastructure can help mitigate the impact of potential exploitation attempts.