CVE-2022-22355 in MQ Appliance
Summary
by MITRE • 04/05/2022
IBM MQ Appliance 9.2 CD and 9.2 LTS are vulnerable to a denial of service in the Login component of the application which could allow an attacker to cause a drop in performance.
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Analysis
by VulDB Data Team • 04/08/2022
The vulnerability identified as CVE-2022-22355 affects IBM MQ Appliance versions 9.2 CD and 9.2 LTS, specifically within the Login component of the application. This issue represents a denial of service weakness that can significantly impact the availability and performance of message queuing services. The affected appliance operates as a critical infrastructure component for enterprise messaging systems, making this vulnerability particularly concerning for organizations relying on IBM MQ for their messaging workflows. The vulnerability stems from insufficient input validation and resource management within the authentication process, creating opportunities for malicious actors to disrupt normal service operations.
The technical flaw manifests in the Login component's handling of authentication requests, where improper validation of user credentials and session management creates pathways for resource exhaustion attacks. Attackers can exploit this weakness by submitting malformed or excessive login requests that consume system resources without proper cleanup or rate limiting mechanisms. The vulnerability aligns with CWE-400, which categorizes resource exhaustion issues in software systems, and represents a classic example of how inadequate input validation can lead to service disruption. The attack vector typically involves sending multiple concurrent authentication attempts or malformed login requests that cause the appliance to consume excessive CPU cycles, memory, or connection resources, ultimately leading to performance degradation or complete service unavailability.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the entire messaging infrastructure. Organizations using IBM MQ Appliance for critical business processes may experience significant downtime, message backlog accumulation, and potential data loss during attack windows. The performance degradation can affect downstream applications that depend on message queuing services, creating cascading effects throughout enterprise systems. From an attacker's perspective, this vulnerability provides a low-effort method to cause maximum disruption, requiring minimal technical expertise while delivering substantial impact. The issue also aligns with ATT&CK technique T1499.004, which covers network denial of service attacks, and demonstrates how vulnerabilities in authentication components can be leveraged for broader system compromise.
Mitigation strategies for CVE-2022-22355 should focus on both immediate defensive measures and long-term architectural improvements. Organizations should implement rate limiting and connection throttling mechanisms to prevent excessive login attempts from overwhelming the system. Network-level firewalls and intrusion prevention systems can be configured to detect and block suspicious authentication patterns. IBM has released patches and updates specifically addressing this vulnerability, which should be applied immediately to all affected appliances. Additional security controls including authentication logging, anomaly detection systems, and regular security assessments can help identify and respond to exploitation attempts. The remediation process should also include reviewing and strengthening access controls, implementing multi-factor authentication, and establishing monitoring procedures to detect unusual authentication patterns that might indicate exploitation attempts. Regular security updates and vulnerability management processes should be prioritized to prevent similar issues from arising in other components of the messaging infrastructure.