CVE-2021-44522 in SiPass integrated
Summary
by MITRE • 12/14/2021
A vulnerability has been identified in SiPass integrated V2.76 (All versions), SiPass integrated V2.80 (All versions), SiPass integrated V2.85 (All versions), Siveillance Identity V1.5 (All versions), Siveillance Identity V1.6 (All versions < V1.6.284.0). Affected applications insufficiently limit the access to the internal message broker system. This could allow an unauthenticated remote attacker to subscribe to arbitrary message queues.
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Analysis
by VulDB Data Team • 12/16/2021
The vulnerability described in CVE-2021-44522 represents a critical security flaw in several versions of SiPass integrated and Siveillance Identity software platforms. This issue affects multiple product versions including SiPass integrated V2.76, V2.80, V2.85, and Siveillance Identity V1.5 and V1.6 versions prior to V1.6.284.0. The core problem lies in the insufficient access controls implemented within the internal message broker system, which serves as a fundamental communication infrastructure for these security platforms. These systems are typically deployed in physical security environments where they manage access control, authentication, and monitoring functions for buildings and facilities.
The technical flaw manifests as inadequate authorization mechanisms within the message broker component that handles internal communications between various system modules. When an attacker successfully exploits this vulnerability, they can subscribe to arbitrary message queues without proper authentication or authorization. This behavior directly violates fundamental security principles and creates a pathway for unauthorized access to sensitive operational data. The message broker system typically handles critical information such as access control events, user authentication data, system status updates, and security alerts. The vulnerability essentially removes the authentication barrier that should normally prevent unauthorized parties from accessing these internal communication channels.
The operational impact of this vulnerability is severe and multifaceted for organizations using affected systems. An unauthenticated remote attacker can potentially intercept and monitor all internal communications, gaining visibility into access control events, user activities, and system operations. This could enable reconnaissance activities where attackers gather intelligence about system usage patterns, identify high-value targets, and understand the operational structure of the security infrastructure. The ability to subscribe to arbitrary message queues means attackers could potentially access sensitive data including access logs, authentication credentials, system configurations, and real-time security events. This information could be leveraged for further attacks or to compromise the integrity of the entire security system.
From a cybersecurity framework perspective, this vulnerability maps directly to CWE-285 (Improper Authorization) and CWE-306 (Missing Authentication for Critical Function) within the Common Weakness Enumeration catalog. The flaw also aligns with ATT&CK technique T1071.004 (Application Layer Protocol: DNS) and T1046 (Network Service Scanning) as attackers might use this vulnerability to enumerate system components and gather intelligence. Organizations should prioritize immediate remediation by upgrading to patched versions of the affected software, implementing network segmentation to limit access to internal message broker systems, and conducting thorough security assessments of their physical security infrastructure. Additionally, organizations should review their network architecture to ensure that internal message broker components are not directly exposed to external networks and implement proper access controls and monitoring mechanisms to detect unauthorized subscription attempts. The vulnerability underscores the importance of securing internal communication systems and demonstrates how flaws in message broker implementations can create cascading security risks within complex security infrastructure deployments.