CVE-2020-5584 in Garoon
Summary
by MITRE
Cybozu Garoon 4.0.0 to 5.0.1 allow remote attackers to obtain unintended information via unspecified vectors.
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Analysis
by VulDB Data Team • 06/30/2020
Cybozu Garoon is a collaboration platform that provides enterprise-level functionality for document management, workflow automation, and communication services. The vulnerability identified as CVE-2020-5584 affects versions 4.0.0 through 5.0.1 of this software, representing a significant information disclosure flaw that could be exploited by remote attackers without authentication. This vulnerability falls under the category of information exposure, which is classified as CWE-209 in the Common Weakness Enumeration framework and aligns with ATT&CK technique T1213.002 for data from information repositories. The unspecified vectors suggest that the flaw could manifest through multiple attack pathways within the application's architecture, potentially including improper access controls, insecure direct object references, or inadequate input validation mechanisms.
The technical nature of this vulnerability enables unauthorized remote access to sensitive data that should not be accessible to external parties. Attackers could potentially extract confidential information such as user credentials, business data, internal system configurations, or other proprietary information stored within the Garoon platform. The impact extends beyond simple data theft as this information disclosure could serve as a foundation for more sophisticated attacks including privilege escalation, lateral movement, or targeted social engineering campaigns. The vulnerability's presence in multiple versions indicates a persistent architectural weakness that was not adequately addressed through the affected release cycle, suggesting either inadequate security testing or a fundamental design flaw in the information access control mechanisms.
From an operational perspective, organizations using affected versions of Cybozu Garoon face substantial risk exposure including potential regulatory compliance violations, intellectual property theft, and reputational damage. The remote exploitation capability means that attackers do not require physical access or insider knowledge to exploit the vulnerability, making it particularly dangerous for enterprise environments where such platforms handle sensitive corporate data. The unspecified nature of the attack vectors suggests that defenders must assume the vulnerability could be exploited through various means including API endpoints, web interfaces, or direct database access points within the application's architecture. This uncertainty compounds the risk assessment process and requires comprehensive network monitoring and access control reviews to identify potential exploitation attempts.
Organizations should prioritize immediate remediation by upgrading to versions of Cybozu Garoon that have patched this vulnerability, typically version 5.0.2 or later. Security teams should implement network segmentation and access controls to limit exposure of the platform to untrusted networks while monitoring for unusual access patterns or data transfers that might indicate exploitation attempts. The vulnerability's classification as information disclosure aligns with ATT&CK tactic TA0006 (credential access) and TA0007 (Discovery), indicating that exploitation could lead to further compromise through credential theft or system reconnaissance. Additional mitigations include implementing web application firewalls, conducting thorough access control reviews, and establishing incident response procedures specifically for information disclosure events. Regular security assessments and penetration testing should be performed to identify similar vulnerabilities in other enterprise applications and ensure comprehensive protection against evolving attack vectors.