CVE-2018-0532 in Garoon
Summary
by MITRE
Cybozu Garoon 3.0.0 to 4.2.6 allows remote authenticated attackers to bypass access restriction to alter setting data of the Standard database via unspecified vectors.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 01/25/2020
The vulnerability identified as CVE-2018-0532 affects Cybozu Garoon versions 3.0.0 through 4.2.6, representing a critical access control flaw that permits authenticated attackers to circumvent security restrictions and modify database settings. This issue stems from inadequate authorization checks within the application's permission system, creating a pathway for malicious actors who have already gained legitimate access to escalate their privileges and manipulate core system configurations. The vulnerability specifically targets the Standard database settings, which form the foundation of the application's operational parameters and security policies.
The technical implementation of this flaw involves insufficient validation of user permissions during database modification operations. When authenticated users attempt to alter settings within the Standard database, the system fails to properly verify whether the requesting user possesses the necessary administrative privileges required for such modifications. This weakness allows attackers to exploit the application's trust model by crafting specific requests that bypass the normal access control mechanisms, effectively enabling them to modify critical configuration data without proper authorization. The unspecified vectors mentioned in the description suggest that the vulnerability may manifest through multiple attack paths within the application's interface or API endpoints.
The operational impact of this vulnerability extends beyond simple data modification, as it fundamentally compromises the integrity and security posture of the entire Garoon environment. Attackers who successfully exploit this flaw can alter database configurations, potentially leading to unauthorized access to sensitive information, disruption of business processes, and establishment of persistent backdoors within the system. The ability to modify Standard database settings provides attackers with significant control over the application's behavior, including user permissions, system parameters, and potentially sensitive operational data that could be leveraged for further attacks. This vulnerability directly violates the principle of least privilege and can enable lateral movement within the network infrastructure.
Organizations utilizing affected Cybozu Garoon versions face substantial risk from this vulnerability, as it requires only authenticated access to potentially escalate privileges and modify critical system components. The attack surface is particularly concerning given that many enterprise environments rely on such collaboration platforms for business-critical operations, making the compromise of database settings a significant security incident. Security teams should implement immediate mitigation strategies including applying the vendor-provided patches, reviewing user access controls, and monitoring for unauthorized database modifications. The vulnerability aligns with CWE-284, which addresses improper access control issues, and represents a clear violation of the ATT&CK technique T1078 for valid accounts and T1484 for cloud service configuration modifications, making it a critical concern for enterprise security operations and compliance requirements.