CVE-2008-0333 in MailBee WebMail Pro
Summary
by MITRE
Directory traversal vulnerability in download_view_attachment.aspx in AfterLogic MailBee WebMail Pro 4.1 for ASP.NET allows remote attackers to read arbitrary files via a .. (dot dot) in the temp_filename parameter.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/14/2024
The vulnerability described in CVE-2008-0333 represents a critical directory traversal flaw within AfterLogic MailBee WebMail Pro 4.1 for ASP.NET, specifically affecting the download_view_attachment.aspx component. This issue stems from inadequate input validation and sanitization mechanisms that fail to properly restrict user-supplied file paths, creating an exploitable condition that enables unauthorized file access. The vulnerability manifests when the application processes the temp_filename parameter without sufficient validation, allowing attackers to manipulate the file path through directory traversal sequences.
The technical exploitation of this vulnerability occurs through the manipulation of the temp_filename parameter to include .. (dot dot) sequences that traverse the directory structure and access files outside the intended download scope. This flaw directly maps to CWE-22, which categorizes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability exists at the application layer where user input is directly incorporated into file system operations without proper sanitization or validation, making it particularly dangerous as it can potentially expose sensitive system files, configuration data, or user information.
The operational impact of this vulnerability extends beyond simple file access, as it can lead to complete system compromise when combined with other attack vectors or when the application has elevated privileges. An attacker could potentially access database configuration files, application source code, user credentials stored in configuration files, or even system-level files that could provide further attack surface. The vulnerability affects the confidentiality and integrity of the webmail system, potentially exposing sensitive communications and user data that should remain isolated within the application's designated directories. This type of vulnerability is particularly concerning in webmail applications where users store personal and potentially sensitive information.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and sanitization measures that prevent directory traversal sequences from being processed. Organizations should employ proper parameter validation that filters out or encodes special characters including .. sequences, implement strict directory access controls, and ensure that file operations are performed within predetermined safe directories. The ATT&CK framework categorizes this type of vulnerability under T1083 - File and Directory Discovery, which represents a reconnaissance technique that attackers often use to gather information about the target system. Security measures should include regular security assessments, input validation testing, and ensuring that applications follow secure coding practices to prevent such path traversal vulnerabilities from being introduced during development phases.