CVE-2005-1423 in 602 Lan Suite
Summary
by MITRE
Directory traversal vulnerability in the mail program in 602LAN SUITE 2004.0.05.0413 allows remote attackers to cause a denial of service and determine the presence of arbitrary files via .. sequences in the A parameter.
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Analysis
by VulDB Data Team • 08/26/2017
The vulnerability identified as CVE-2005-1423 represents a directory traversal flaw within the mail program component of 602LAN SUITE version 2004.0.0.5.0413, a network communication suite designed for enterprise environments. This directory traversal vulnerability specifically affects the handling of user input parameters within the mail application's processing logic, creating a pathway for malicious actors to manipulate file system access patterns. The flaw manifests when the application fails to properly validate or sanitize input data, particularly in the A parameter of the mail program, allowing attackers to craft malicious requests that exploit the underlying file system navigation mechanisms. The vulnerability falls under the broader category of CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The technical exploitation of this vulnerability occurs through the insertion of directory traversal sequences, specifically the .. (dot dot) notation, within the A parameter of the mail program's interface. When an attacker submits a specially crafted request containing these sequences, the vulnerable application processes them without adequate validation, potentially allowing access to files outside the intended directory structure. This improper input handling creates a condition where the application's file system operations can be manipulated to access arbitrary files on the server, effectively bypassing normal access controls and file system boundaries. The vulnerability's impact extends beyond simple information disclosure, as it can also be leveraged to cause denial of service conditions by triggering system resource exhaustion or file access errors through malformed traversal sequences.
The operational impact of this vulnerability is significant for organizations using 602LAN SUITE, as it provides remote attackers with the capability to both disrupt services and potentially access sensitive information. The denial of service component can be achieved by crafting traversal sequences that cause the mail program to attempt accessing non-existent files or directories, leading to application crashes or resource exhaustion. Additionally, the ability to determine the presence of arbitrary files through directory traversal allows attackers to perform reconnaissance activities, mapping the target system's file structure and identifying potentially sensitive files or directories that may contain confidential data. This reconnaissance capability can be particularly dangerous when combined with other vulnerabilities or when attackers target specific files such as configuration files, database files, or system binaries that contain sensitive information.
Security mitigations for this vulnerability should focus on implementing proper input validation and sanitization measures within the mail program's parameter handling logic. Organizations should ensure that all user-supplied input, particularly parameters used in file system operations, undergoes strict validation to prevent the inclusion of directory traversal sequences. The implementation of a whitelist-based approach for acceptable input parameters, combined with proper path normalization and validation, can effectively prevent exploitation of this vulnerability. Additionally, system administrators should consider implementing network-level protections such as firewalls and intrusion detection systems to monitor for suspicious patterns of directory traversal attempts. The vulnerability's classification under CWE-22 and its potential for leading to more severe exploits aligns with ATT&CK technique T1083, which covers directory and file permissions enumeration, making it a critical vulnerability to address through both application-level fixes and network security controls. Regular security assessments and patch management processes should be implemented to ensure that such vulnerabilities in legacy software components are identified and remediated promptly.