CVE-2014-0923 in Messagesight Jms Client
Summary
by MITRE
IBM MessageSight 1.x before 1.1.0.0-IBM-IMA-IT01015 allows remote attackers to cause a denial of service (daemon restart) via crafted MQ Telemetry Transport (MQTT) authentication data.
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Analysis
by VulDB Data Team • 05/10/2026
The vulnerability identified as CVE-2014-0923 affects IBM MessageSight versions 1.x prior to 1.1.0.0, specifically targeting the MQTT telemetry transport protocol implementation within the messaging infrastructure. This issue represents a significant security weakness that enables remote attackers to disrupt service availability through carefully constructed authentication data payloads. The vulnerability exists within the daemon process responsible for handling MQTT connections, making it particularly dangerous as it can compromise the core messaging functionality of the system.
The technical flaw manifests in the insufficient validation and handling of MQTT authentication data within the MessageSight daemon. When maliciously crafted authentication parameters are submitted through the MQTT protocol interface, the system fails to properly sanitize or validate these inputs before processing them within the authentication subsystem. This inadequate input validation creates a condition where malformed or specially constructed authentication data can trigger unexpected behavior in the daemon process, ultimately leading to its restart or termination. The vulnerability stems from the lack of proper bounds checking and input sanitization mechanisms that should normally protect against malformed protocol data.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the reliability and availability of critical messaging infrastructure. Remote attackers can exploit this weakness to repeatedly cause daemon restarts, creating a persistent denial of service condition that can degrade system performance or completely prevent legitimate users from establishing MQTT connections. This type of attack can be particularly damaging in industrial IoT environments where MessageSight is commonly deployed, as it can disrupt communication between sensors, devices, and central monitoring systems. The vulnerability aligns with CWE-129, which addresses improper validation of input boundaries, and represents a classic example of how insufficient input validation can lead to service availability compromises.
Organizations utilizing IBM MessageSight should prioritize immediate implementation of security patches to address this vulnerability, as the affected versions remain susceptible to exploitation without proper mitigation. The recommended remediation involves upgrading to IBM MessageSight version 1.1.0.0 or later, which includes enhanced input validation mechanisms and improved authentication handling procedures. Additionally, network segmentation and access controls should be implemented to limit exposure of MQTT endpoints to untrusted networks. Security monitoring should be enhanced to detect unusual daemon restart patterns that may indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to the T1499.004 technique for network denial of service, where adversaries leverage protocol implementation weaknesses to disrupt service availability. Organizations should also consider implementing intrusion detection systems that can identify and alert on suspicious MQTT authentication patterns that may indicate exploitation attempts.