CVE-2016-1191 in Garoon
Summary
by MITRE
Directory traversal vulnerability in the Files function in Cybozu Garoon 3.x and 4.x before 4.2.1 allows remote attackers to modify settings via unspecified vectors.
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Analysis
by VulDB Data Team • 01/31/2019
The CVE-2016-1191 vulnerability represents a critical directory traversal flaw within Cybozu Garoon software versions 3.x and 4.x prior to 4.2.1. This vulnerability specifically affects the Files function component of the application, creating a significant security risk that enables remote attackers to manipulate system settings through unspecified attack vectors. The flaw resides in how the application handles file operations and directory navigation, potentially allowing unauthorized access to sensitive system resources.
This directory traversal vulnerability stems from inadequate input validation and improper path handling within the Files function implementation. The vulnerability is categorized under CWE-22 which specifically addresses Improper Limitation of a Pathname to a Restricted Directory, commonly known as Path Traversal or Directory Traversal. Attackers can exploit this weakness to access files and directories outside the intended scope of the application, potentially leading to unauthorized data access, modification, or even complete system compromise. The unspecified vectors mentioned in the description suggest that the attack could occur through multiple pathways within the application's file handling mechanisms.
The operational impact of this vulnerability is substantial as it allows remote attackers to modify system settings without proper authentication or authorization. This capability enables attackers to potentially alter critical application configurations, access sensitive user data, or establish persistent access to the system. The vulnerability's remote nature means that attackers do not require physical access to the system, making it particularly dangerous for enterprise environments where such applications are deployed. The affected versions 3.x and 4.x of Cybozu Garoon represent widely used collaboration and workflow management platforms, amplifying the potential impact across various organizational sectors including government, healthcare, and financial services.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of the vendor-provided patch version 4.2.1 or later. The mitigation strategy should also include network segmentation to limit access to the vulnerable application, implementation of web application firewalls to detect and block traversal attempts, and comprehensive monitoring for suspicious file access patterns. Security teams should conduct thorough vulnerability assessments to identify any potential exploitation attempts and ensure that all instances of the vulnerable software are updated. The ATT&CK framework categorizes this type of vulnerability under T1059 Command and Scripting Interpreter and T1083 File and Directory Discovery, highlighting the reconnaissance and privilege escalation activities that can result from such flaws. Additionally, organizations should implement proper access controls and privilege separation to minimize the potential impact if exploitation occurs, adhering to the principle of least privilege as outlined in security best practices.