CVE-2006-4371 in WebAdmin
Summary
by MITRE
Multiple directory traversal vulnerabilities in Alt-N WebAdmin 3.2.3 and 3.2.4 running with MDaemon 9.0.5, and possibly earlier, allow remote authenticated global administrators to read arbitrary files via a .. (dot dot) in the file parameter to (1) logfile_view.wdm and (2) configfile_view.wdm.
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Analysis
by VulDB Data Team • 08/03/2022
The vulnerability described in CVE-2006-4371 represents a critical directory traversal flaw affecting Alt-N WebAdmin versions 3.2.3 and 3.2.4 when operating with MDaemon 9.0.5 or earlier versions. This security weakness specifically targets the file parameter handling within two distinct web administration modules: logfile_view.wdm and configfile_view.wdm. The flaw enables authenticated global administrators to exploit the system by manipulating directory traversal sequences using the .. (dot dot) notation, thereby gaining unauthorized access to arbitrary files within the server's file system. Such vulnerabilities fall under the common weakness enumeration CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical implementation of this vulnerability exploits the insecure handling of user-supplied input within the web administration interface. When an authenticated global administrator submits a request containing directory traversal sequences in the file parameter, the application fails to properly validate or sanitize the input before processing file access requests. This allows attackers to navigate beyond the intended directory boundaries and access sensitive files that should remain restricted to authorized personnel only. The attack vector specifically targets web administration modules that handle log file viewing and configuration file viewing functionalities, making it particularly dangerous as these modules often contain sensitive system information, configuration data, and potentially user credentials.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it provides attackers with the capability to potentially extract sensitive system information, configuration files, and log data that could reveal system architecture details, user credentials, or other confidential information. Remote authenticated global administrators can leverage this vulnerability to access not only system logs but also configuration files that may contain database connection strings, encryption keys, or other critical system parameters. This represents a significant compromise of system integrity and confidentiality, as the vulnerability allows for privilege escalation through the exploitation of administrative interfaces that are designed to be secure and restricted.
Security professionals should consider this vulnerability in the context of the MITRE ATT&CK framework, particularly under the techniques related to privilege escalation and credential access. The attack pattern aligns with T1078 which covers valid accounts and T1566 which covers credential access through exploitation of vulnerabilities. Organizations should implement immediate mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file access operations. The recommended approach involves implementing proper path validation mechanisms that prevent directory traversal sequences from being processed, ensuring that all file access operations are confined to predetermined directories, and enforcing strict access controls within the web administration interface. Additionally, regular security updates and patch management processes should be implemented to prevent similar vulnerabilities from being introduced through outdated software components, as this vulnerability specifically affected versions that were considered outdated at the time of discovery.