CVE-2016-1192 in Garoon
Summary
by MITRE
Directory traversal vulnerability in the logging implementation in Cybozu Garoon 3.7 through 4.2 allows remote authenticated users to read a log file via unspecified vectors.
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Analysis
by VulDB Data Team • 01/31/2019
The CVE-2016-1192 vulnerability represents a directory traversal flaw within the logging subsystem of Cybozu Garoon versions 3.7 through 4.2. This vulnerability specifically affects the application's ability to handle file paths during log file operations, creating a potential security risk for authenticated users who can exploit this weakness to access sensitive log files. The vulnerability stems from inadequate input validation and path handling mechanisms within the logging implementation, which fails to properly sanitize user-supplied data before processing file operations.
The technical exploitation of this vulnerability occurs through unspecified vectors within the logging framework, allowing authenticated attackers to manipulate file path references and gain unauthorized access to log files that should remain protected. This directory traversal condition enables attackers to navigate beyond the intended directory boundaries and retrieve sensitive information stored in log files, potentially including system logs, user activity records, or application-specific log data. The vulnerability specifically targets the logging implementation, making it particularly concerning for environments where comprehensive logging is essential for security monitoring and compliance requirements. The flaw operates at the file system level where proper path validation should prevent arbitrary file access through crafted input sequences.
The operational impact of CVE-2016-1192 extends beyond simple information disclosure, as log files often contain sensitive data that could aid in further attacks or compromise system integrity. Attackers could potentially access authentication logs, system error messages, or application-specific records that might reveal system configurations, user credentials, or other confidential information. This vulnerability particularly affects organizations using Cybozu Garoon for collaboration and workflow management, where the logging functionality is crucial for tracking user activities and maintaining audit trails. The authenticated nature of the exploit means that attackers must first obtain valid credentials, but once authenticated, they can leverage this vulnerability to access potentially sensitive system information that should remain restricted to authorized personnel.
Security mitigations for this vulnerability involve implementing proper input validation and sanitization within the logging subsystem, ensuring that all user-supplied data is properly validated before any file system operations are performed. Organizations should update to patched versions of Cybozu Garoon where available, as the vendor would have addressed the path traversal issue through proper input validation mechanisms. Network segmentation and access controls should be implemented to limit the potential impact of authenticated attacks, while regular security assessments should verify that logging implementations properly handle file path operations. The vulnerability aligns with CWE-22 Directory Traversal and can be categorized under ATT&CK technique T1213 Data from Information Repositories, emphasizing the need for proper file access controls and input validation in logging systems. System administrators should also implement monitoring for unusual file access patterns that might indicate exploitation attempts, and maintain regular backups of log data to ensure integrity and availability during security incidents.