CVE-2004-1933 in Directory
Summary
by MITRE
Citadel/UX 5.00 through 6.14 installs the database directory and files with world-read permissions, which could allow local users to bypass access controls and read unauthorized messages.
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Analysis
by VulDB Data Team • 07/05/2017
The vulnerability identified as CVE-2004-1933 affects Citadel/UX email and groupware server versions 5.00 through 6.14, representing a critical access control flaw that undermines the security posture of deployed systems. This issue stems from improper file system permission configuration during the installation process, where database directories and associated files are created with world-readable permissions that grant unrestricted access to all local users on the system. The vulnerability is classified under CWE-732, which specifically addresses incorrect permission assignment for critical resources, making it a direct violation of fundamental security principles that govern resource access control mechanisms. The affected system operates on the principle that only authorized users should have access to sensitive data, yet this flaw allows any local user to bypass established access controls and read unauthorized messages stored within the database.
The technical implementation of this vulnerability occurs during the software installation phase when the Citadel/UX server creates its database structure without properly setting restrictive file permissions. This flaw creates a persistent security weakness where database files and directories are accessible to all users on the system, effectively eliminating the concept of data confidentiality for email messages and related communications stored within the system. The operational impact is significant as it allows local users to gain unauthorized access to potentially sensitive information including private communications, business correspondence, and personal data that should remain protected within the email system. This access bypasses the normal authentication and authorization mechanisms that should protect the integrity and confidentiality of the email data, creating a scenario where any user with local system access can read messages intended for other users. The vulnerability demonstrates a clear failure in the principle of least privilege, where system resources are unnecessarily exposed to all users rather than being restricted to authorized personnel only.
From an operational security perspective, this vulnerability creates a substantial risk for organizations deploying Citadel/UX systems, particularly in environments where multiple users share the same physical or virtual infrastructure. The local access requirement means that attackers must first gain access to the system through other means before exploiting this vulnerability, but once achieved, the impact is immediate and comprehensive. The flaw represents a classic case of privilege escalation through improper resource management, allowing attackers to read messages that may contain confidential business information, personal data, or sensitive communications that should remain protected. Security professionals should note that this vulnerability aligns with ATT&CK technique T1005, which involves data from local system repositories, and T1078, which covers valid accounts and legitimate credentials, as the vulnerability exploits the legitimate system access of local users to gain unauthorized data access. The implications extend beyond simple information disclosure, as the ability to read unauthorized messages could lead to social engineering attacks, intellectual property theft, or compromise of sensitive business communications, making this vulnerability particularly dangerous in corporate and government environments where data confidentiality is paramount.
Organizations affected by this vulnerability should implement immediate mitigations including proper file system permission configuration, regular security audits of installed systems, and comprehensive access control reviews. The recommended solution involves manually adjusting file permissions on the database directories and files to restrict access to authorized users only, typically through chmod operations that remove world-read permissions. System administrators should also consider implementing automated monitoring solutions that can detect and alert on improper file permissions, as well as conducting regular security assessments to identify similar permission misconfigurations across the system infrastructure. Additionally, organizations should update to patched versions of Citadel/UX where available, as newer releases should address this specific vulnerability through proper default permission settings. The remediation process should include comprehensive testing to ensure that legitimate system functionality remains intact while properly restricting unauthorized access to the database resources. This vulnerability serves as a critical reminder of the importance of proper permission management and the potential consequences of inadequate security configuration during software installation processes.