CVE-2016-6080 in WebSphere Message Broker
Summary
by MITRE
The WebAdmin context for WebSphere Message Broker allows directory listings which could disclose sensitive information to the attacker.
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Analysis
by VulDB Data Team • 08/09/2020
The vulnerability identified as CVE-2016-6080 resides within the WebAdmin component of IBM WebSphere Message Broker, a middleware product designed for message routing and processing in enterprise environments. This flaw represents a critical information disclosure vulnerability that stems from improper access controls within the WebAdmin context, which serves as the administrative interface for managing broker configurations and monitoring activities. The issue manifests when the WebAdmin application fails to properly restrict directory access, allowing unauthorized users to traverse file system directories and potentially access sensitive configuration files, log data, or other confidential information that should remain protected within the broker environment.
The technical root cause of this vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. When the WebAdmin interface processes user requests for directory listings without adequate input validation or access control mechanisms, it enables attackers to craft malicious requests that bypass normal file system access restrictions. This weakness typically occurs when the application directly uses user-supplied input to construct file paths without proper sanitization or when it fails to implement proper authorization checks before serving directory contents. The vulnerability can be exploited through simple HTTP requests that manipulate path parameters, potentially revealing the complete directory structure of the broker installation and exposing sensitive artifacts such as configuration files containing credentials, system properties, or operational data.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable reconnaissance data that can facilitate subsequent exploitation attempts. An attacker who successfully exploits this vulnerability can gain visibility into the broker's file system layout, potentially identifying sensitive files such as configuration properties, keystore files, or backup copies that contain authentication credentials or system-specific information. This reconnaissance capability significantly lowers the barrier for attackers attempting to compromise the entire WebSphere Message Broker environment, as they can now identify potential attack vectors, target specific configuration files, or locate system artifacts that might contain exploitable weaknesses. The disclosure of directory listings can also reveal the presence of development artifacts, test data, or other information that may not be intended for production environments but could still contain sensitive details about the system's operation or implementation.
Organizations affected by this vulnerability should implement immediate mitigations including restricting access to the WebAdmin context through network-level controls, implementing proper authentication and authorization mechanisms, and ensuring that directory listing features are disabled or properly secured. The recommended approach involves configuring access controls to limit WebAdmin access to authorized administrators only, typically through network segmentation, firewall rules, or application-level authentication. Additionally, system administrators should disable directory browsing capabilities within the WebAdmin interface and ensure that all user inputs are properly validated before being processed by the application. This vulnerability demonstrates the importance of following security best practices such as principle of least privilege and defense in depth, where multiple layers of security controls work together to protect critical system components. The issue also highlights the need for regular security assessments and proper configuration management to prevent the exposure of sensitive administrative interfaces that could provide attackers with significant insights into system architecture and operational details.
This vulnerability type falls under the ATT&CK technique T1083 - File and Directory Discovery, which describes adversary techniques for identifying files and directories on compromised systems. The exposure of directory listings through WebAdmin context represents a classic example of information gathering that can lead to more sophisticated attacks, including credential theft, privilege escalation, or system compromise. Organizations should consider implementing monitoring solutions that can detect unusual directory access patterns or unauthorized attempts to enumerate system resources, as these activities often precede more serious security incidents. The vulnerability underscores the critical importance of securing administrative interfaces and implementing proper access controls, as these components often serve as primary attack vectors for adversaries seeking to gain deeper access to enterprise systems.