CVE-2007-6379 in BadBlue
Summary
by MITRE
BadBlue 2.72b and earlier allows remote attackers to obtain sensitive information via an invalid browse parameter, which reveals the installation path in an error message.
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Analysis
by VulDB Data Team • 09/13/2018
The vulnerability identified as CVE-2007-6379 affects BadBlue web server versions 2.72b and earlier, representing a critical information disclosure flaw that exposes system internals to remote attackers. This vulnerability resides in the server's handling of browse parameters, specifically when invalid or malformed values are submitted through the web interface. The flaw demonstrates poor input validation and error handling practices that inadvertently leak sensitive system information to unauthorized users. The installation path disclosure occurs within error messages generated by the server when processing invalid browse requests, creating a direct avenue for attackers to gather reconnaissance data about the target system's file structure and deployment environment.
From a technical perspective, this vulnerability operates as an information disclosure weakness that aligns with CWE-200, which categorizes improper error handling and information exposure. The flaw represents a classic example of how insufficient validation of user-supplied input can lead to unintended information leakage. When BadBlue processes an invalid browse parameter, the server fails to properly sanitize or validate the input before generating error responses, resulting in the inclusion of the installation path within the error message output. This behavior violates fundamental security principles of least privilege and defense in depth, as it provides attackers with precise knowledge of the server's file system layout. The vulnerability exists at the application layer and can be exploited through standard web browser interactions without requiring authentication or specialized tools.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with critical system intelligence that can be leveraged for subsequent attacks. Knowledge of the installation path enables attackers to plan more sophisticated exploitation techniques, including potential directory traversal attacks or targeted file access attempts. The disclosed information can be used to map the server's file structure, identify potential vulnerabilities in related components, and craft more effective attack vectors. This type of information leakage creates a foundation for further compromise, as attackers can use the exposed paths to identify configuration files, backup directories, or other sensitive system locations. The vulnerability essentially provides an attacker with a roadmap to the system's internal organization, significantly reducing the effort required for successful exploitation.
Security mitigations for this vulnerability should focus on implementing proper input validation and error handling mechanisms within the BadBlue web server. Organizations should immediately upgrade to versions of BadBlue that address this vulnerability, as the vendor has released patches to resolve the issue. System administrators should configure the web server to suppress detailed error messages and avoid exposing internal system paths in error responses. The implementation of proper logging mechanisms can help detect and monitor exploitation attempts, while network segmentation and access controls can limit the potential impact of information disclosure. Additionally, security monitoring tools should be configured to alert on unusual patterns of browse parameter requests that may indicate reconnaissance activities. This vulnerability highlights the importance of following secure coding practices and adhering to the principle of least information disclosure, which aligns with the ATT&CK framework's concept of information gathering and reconnaissance activities that precede more advanced attacks.