CVE-2002-1498 in SWServer
Summary
by MITRE
Directory traversal vulnerability in SWServer 2.2 and earlier allows remote attackers to read arbitrary files via a URL containing .. sequences with "/" or "\" characters.
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Analysis
by VulDB Data Team • 06/14/2019
The vulnerability described in CVE-2002-1498 represents a classic directory traversal flaw that affects SWServer versions 2.2 and earlier. This type of vulnerability falls under the broader category of path traversal attacks that have been consistently identified as critical security weaknesses in web applications and servers. The flaw specifically manifests when the server fails to properly validate or sanitize user-supplied input that contains directory path sequences, allowing attackers to manipulate file access requests through the use of .. (dot dot) sequences combined with forward slashes or backslashes. The vulnerability is particularly dangerous because it enables attackers to bypass normal access controls and potentially access sensitive files that should remain protected within the server's file system hierarchy.
The technical implementation of this vulnerability stems from inadequate input validation mechanisms within SWServer's URL processing logic. When a remote attacker crafts a malicious URL containing sequences like ../../../etc/passwd or ..\..\windows\system32\config\sam, the server processes these path traversal attempts without proper sanitization. This allows the attacker to navigate beyond the intended directory structure and access files that are not meant to be publicly accessible. The vulnerability is particularly severe because it can be exploited using either forward slash or backslash characters, making it more versatile and harder to defend against. The underlying flaw demonstrates poor input filtering practices and highlights the importance of implementing proper path validation mechanisms that can identify and neutralize malicious path sequences before they are processed by the server's file system functions.
From an operational impact perspective, this vulnerability poses significant risks to systems running affected versions of SWServer. Attackers can leverage this weakness to access configuration files, database files, log files, and potentially sensitive system files that contain credentials, personal information, or other confidential data. The ability to read arbitrary files through a directory traversal attack can lead to complete system compromise, especially if the server has elevated privileges or if the accessible files contain authentication tokens, encryption keys, or other sensitive information. This vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, and represents a fundamental security flaw that can be exploited for information disclosure, privilege escalation, and ultimately full system compromise. The attack vector is particularly concerning because it requires minimal sophistication and can be executed remotely, making it accessible to attackers with basic technical knowledge.
The mitigation strategies for CVE-2002-1498 should focus on immediate remediation through software updates and patches provided by the vendor. Organizations running affected versions of SWServer must prioritize upgrading to versions that properly implement input validation and path sanitization mechanisms. Additionally, network-level defenses should include implementing proper web application firewalls that can detect and block suspicious path traversal patterns in HTTP requests. The implementation of proper input validation should include strict filtering of directory traversal sequences, normalization of file paths, and enforcement of access controls that prevent access to sensitive system directories. This vulnerability also highlights the importance of following secure coding practices that align with the principles outlined in the OWASP Top Ten and MITRE ATT&CK framework, particularly in the context of web application security and privilege escalation techniques. Organizations should also implement comprehensive monitoring and logging to detect suspicious access patterns that may indicate exploitation attempts, and establish regular security assessments to identify similar vulnerabilities in other systems and applications.