CVE-2017-2258 in Garoon
Summary
by MITRE
Directory traversal vulnerability in Cybozu Garoon 4.2.4 to 4.2.5 allows an attacker to read arbitrary files via Garoon SOAP API "WorkflowHandleApplications".
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Analysis
by VulDB Data Team • 11/11/2019
The vulnerability identified as CVE-2017-2258 represents a critical directory traversal flaw within Cybozu Garoon software versions 4.2.4 through 4.2.5. This issue specifically affects the WorkflowHandleApplications functionality within the Garoon SOAP API, creating a pathway for malicious actors to access arbitrary files on the affected system. The vulnerability stems from inadequate input validation and sanitization within the SOAP API endpoint, allowing attackers to manipulate file paths through crafted requests. Such directory traversal vulnerabilities fall under the CWE-22 category, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical exploitation of this vulnerability occurs when an attacker sends specially crafted SOAP requests to the WorkflowHandleApplications endpoint, manipulating the file path parameters to navigate outside the intended directory structure. This allows unauthorized access to sensitive files including configuration data, user credentials, application logs, and potentially system-level files that should remain protected. The attack vector leverages the lack of proper input validation mechanisms that should normally restrict file access to legitimate application directories. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1566 (Phishing with Social Engineering) as attackers may use this access to gather information for further exploitation or to obtain credentials for privilege escalation.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to gain insights into the system architecture, application configuration, and potentially sensitive business data. Organizations using affected Garoon versions face significant risk of data breaches, as the vulnerability allows for arbitrary file reading without proper authentication or authorization. The affected environment may contain confidential documents, user personal information, and business-critical data that could be extracted through this vulnerability. Attackers could use the gathered information to plan more sophisticated attacks, including privilege escalation, lateral movement, or to conduct targeted phishing campaigns using stolen credentials.
Mitigation strategies for CVE-2017-2258 should prioritize immediate patching of affected systems to the latest available versions of Cybozu Garoon that address this directory traversal vulnerability. Organizations should implement network segmentation and access controls to limit exposure of the SOAP API endpoints to only trusted internal systems. Input validation should be strengthened at all API entry points to prevent manipulation of file paths, with proper sanitization of all user-supplied data before processing. Security monitoring should be enhanced to detect unusual file access patterns and anomalous API usage that may indicate exploitation attempts. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications and systems within the organization's attack surface. The vulnerability underscores the importance of maintaining up-to-date software versions and implementing proper security controls to prevent unauthorized access to critical system resources.