CVE-2002-1040 in AIX
Summary
by MITRE
Unknown vulnerability in the WebSecure (DFSWeb) configuration utilities in AIX 4.x, possibly related to relative pathnames.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 01/14/2018
The vulnerability identified as CVE-2002-1040 resides within the WebSecure (DFSWeb) configuration utilities distributed with AIX 4.x operating systems, representing a critical security flaw that has persisted for over two decades. This issue manifests specifically within the web server configuration management tools that administrators use to establish and modify web server settings. The vulnerability stems from improper handling of relative pathnames during configuration file processing, creating potential exploitation pathways that could allow unauthorized users to manipulate system resources. The affected WebSecure utilities operate within the AIX 4.x environment, which represents a legacy operating system platform that was widely deployed in enterprise environments during the early 2000s. The configuration utilities in question are part of the Distributed File System web components that provide administrative interfaces for managing web server configurations, making them prime targets for attackers seeking to gain elevated privileges or access to sensitive system resources.
The technical flaw underlying CVE-2002-1040 exploits the improper validation of pathname references within the WebSecure configuration utilities, creating a directory traversal vulnerability that can be leveraged to access files outside of the intended configuration directories. This weakness allows attackers to manipulate relative path references to navigate beyond the designated configuration boundaries and potentially access restricted system files or directories. The vulnerability specifically relates to how the utilities process file paths when handling configuration requests, where relative pathnames are not properly sanitized or validated before being used in file system operations. This issue falls under the broader category of path traversal vulnerabilities, which are classified as CWE-22 in the Common Weakness Enumeration catalog, and represents a fundamental flaw in input validation and path resolution mechanisms. Attackers could exploit this weakness by crafting malicious requests that include sequences such as "../" or similar directory traversal patterns to access configuration files, system binaries, or other sensitive resources that should remain protected from unauthorized access.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can enable attackers to gain unauthorized access to critical system configuration data and potentially compromise the entire web server infrastructure. When exploited, this vulnerability could allow attackers to modify web server configurations, access sensitive administrative credentials, or even gain access to underlying system files that contain critical security parameters. The implications are particularly severe in enterprise environments where AIX 4.x systems were commonly deployed for mission-critical applications, as these systems often handled sensitive data and required robust security controls. The vulnerability affects the administrative interface components of the DFSWeb utilities, which means that successful exploitation could provide attackers with the ability to modify web server behavior, redirect traffic, or disable security features. This represents a significant threat to web server integrity and could potentially lead to complete system compromise, especially when combined with other vulnerabilities or when the affected systems are not properly isolated within network security perimeters.
Mitigation strategies for CVE-2002-1040 should focus on immediate system hardening measures and comprehensive security assessments of affected AIX 4.x environments. Organizations should implement strict input validation controls to prevent relative path traversal attempts and ensure that all pathname references are properly sanitized before being processed by the WebSecure utilities. The recommended approach includes applying the appropriate AIX security patches and updates from IBM, which would address the underlying path traversal vulnerability in the DFSWeb configuration utilities. Security administrators should also implement network segmentation controls to limit access to the affected web server components and restrict administrative access to trusted network segments only. Additionally, monitoring systems should be configured to detect anomalous file access patterns or configuration modification attempts that might indicate exploitation attempts. The vulnerability's classification as a path traversal issue aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as attackers may attempt to leverage this weakness to execute unauthorized commands through manipulated configuration files. Given the age of the AIX 4.x platform and the long-standing nature of this vulnerability, organizations should consider migrating affected systems to more modern, supported operating environments to eliminate exposure to this and similar legacy vulnerabilities that have been documented in the cybersecurity community for over two decades.