CVE-2016-4432 in Qpid Java
Summary
by MITRE
The AMQP 0-8, 0-9, 0-91, and 0-10 connection handling in Apache Qpid Java before 6.0.3 might allow remote attackers to bypass authentication and consequently perform actions via vectors related to logging connection state.
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Analysis
by VulDB Data Team • 08/22/2022
The vulnerability identified as CVE-2016-4432 affects Apache Qpid Java implementations that support AMQP protocols version 0-8, 0-9, 0-91, and 0-10. This authentication bypass flaw resides within the connection handling mechanisms of the messaging system, specifically impacting how the software manages and logs connection state information. The issue enables remote attackers to circumvent the authentication process and gain unauthorized access to system resources, potentially leading to privilege escalation and unauthorized operations within the messaging infrastructure.
The technical root cause of this vulnerability stems from improper handling of connection state logging within the AMQP protocol implementation. When connections are established and maintained, the system logs various state information that should normally be protected and validated during authentication processes. However, the flaw allows attackers to manipulate or exploit the logging mechanisms to bypass the required authentication checks. This occurs because the system fails to properly validate connection state transitions and authentication credentials during the connection establishment phase, creating a pathway for unauthorized access. The vulnerability is particularly concerning because it affects multiple AMQP versions, amplifying its potential impact across various deployed systems.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with the ability to perform arbitrary actions within the messaging environment. Once authenticated bypass is achieved, adversaries can potentially intercept, modify, or delete messages, establish unauthorized connections, and manipulate the messaging queue structures. This authentication bypass allows for persistent access to the messaging infrastructure, enabling attackers to conduct long-term surveillance or data exfiltration operations. The vulnerability affects the fundamental security model of the messaging system, undermining the integrity and confidentiality of message transmission and storage within the Apache Qpid Java implementation.
Organizations should immediately implement mitigation strategies including upgrading to Apache Qpid Java version 6.0.3 or later, which contains the necessary patches to address the authentication bypass vulnerability. Network segmentation and firewall rules should be implemented to restrict access to AMQP ports and services, limiting exposure to unauthorized networks. Additionally, monitoring and logging of connection attempts and state changes should be enhanced to detect potential exploitation attempts. The vulnerability aligns with CWE-287, which addresses improper authentication issues, and maps to ATT&CK technique T1078 for valid accounts and T1566 for phishing, as attackers may leverage this flaw to establish persistent access to messaging infrastructure. Regular security assessments and vulnerability scanning should be conducted to ensure all systems remain protected against similar authentication bypass vulnerabilities in messaging protocols.