CVE-2005-1902 in SPA-PRO Mail @Solomon
Summary
by MITRE
Directory traversal vulnerability in the IMAP service for SPA-PRO Mail @Solomon 4.00 allows remote authenticated users to read other users mail and perform operations on arbitrary directories via .. sequences in the (1) SELECT, (2) CREATE, (3) DELETE, and (4) RENAME commands.
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Analysis
by VulDB Data Team • 06/09/2019
The CVE-2005-1902 vulnerability represents a critical directory traversal flaw within the IMAP service of SPA-PRO Mail @Solomon version 4.00, exposing a fundamental security weakness that undermines the integrity of email system operations. This vulnerability specifically affects the IMAP protocol implementation where the service fails to properly validate user input during directory operations, allowing authenticated attackers to manipulate file system paths through directory traversal sequences. The flaw exists in four distinct IMAP commands: SELECT, CREATE, DELETE, and RENAME, making it particularly dangerous as it can be exploited across multiple email management functions. The vulnerability stems from inadequate input sanitization and path validation mechanisms that permit the use of ".." sequences to navigate beyond the intended mail storage directories, effectively bypassing access controls that should restrict users to their own mailboxes.
The technical exploitation of this vulnerability occurs when an authenticated user submits malicious directory traversal sequences within the IMAP commands mentioned above. When the system processes these commands without proper validation, it interprets the ".." sequences as legitimate path navigation instructions, allowing attackers to access files and directories outside their designated mail storage areas. This creates a privilege escalation scenario where users can read other users' mail messages, manipulate arbitrary directories, and potentially execute unauthorized operations on the file system. The vulnerability essentially undermines the core security model of the email system by allowing users to escape the boundaries of their individual mailboxes and access the broader file system structure. From a cybersecurity perspective, this vulnerability aligns with CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and represents a classic example of path traversal attacks that have been documented extensively in security literature and frameworks.
The operational impact of CVE-2005-1902 extends beyond simple data theft, as it fundamentally compromises the confidentiality and integrity of email communications within the affected system. Attackers can exploit this vulnerability to access sensitive information belonging to other users, potentially including personal communications, business correspondence, and confidential data that should remain isolated within individual mailboxes. The ability to perform operations on arbitrary directories through the RENAME command adds an additional layer of risk, as attackers could potentially rename files, delete important mail data, or even create malicious files in system directories. This vulnerability directly violates the principle of least privilege and undermines the trust model that email systems rely upon for secure communication. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access, specifically leveraging path traversal to bypass access controls and gain unauthorized system access.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and path sanitization measures within the IMAP service. Organizations should ensure that all user-supplied input is rigorously validated and that directory traversal sequences are explicitly rejected or properly resolved within the intended mailbox boundaries. The system should implement strict path validation that prevents access to parent directories and enforces proper sandboxing of user operations within designated mail storage areas. Security patches or updates to the SPA-PRO Mail @Solomon software should be applied immediately to address the root cause of the vulnerability. Additionally, network segmentation and access controls should be implemented to limit the scope of potential exploitation, while monitoring systems should be deployed to detect and alert on suspicious IMAP operations that attempt directory traversal. Regular security assessments and penetration testing should be conducted to verify that input validation mechanisms are properly functioning and that no similar vulnerabilities exist in other components of the email infrastructure. The vulnerability serves as a reminder of the critical importance of proper input validation in network services and the potential consequences of failing to implement robust security controls in protocol implementations.