CVE-2004-0698 in WebSTAR
Summary
by MITRE
4D WebSTAR 5.3.2 and earlier allows local users to read and modify arbitrary files via a symlink attack.
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Analysis
by VulDB Data Team • 05/24/2019
The vulnerability identified as CVE-2004-0698 affects 4D WebSTAR version 5.3.2 and earlier installations, representing a critical security flaw that enables local attackers to exploit symbolic link manipulation for unauthorized file access and modification. This issue stems from insufficient validation of symbolic link references within the web server's file handling mechanisms, creating a pathway for privilege escalation and data compromise. The vulnerability specifically targets the server's handling of file operations where symbolic links are processed without proper verification of the target file's location or permissions.
The technical implementation of this flaw involves the web server's failure to properly resolve symbolic links before executing file operations, allowing malicious users to create or manipulate symbolic links that point to sensitive system files outside the intended web root directory. When the server processes these links without adequate path validation, it can inadvertently access and modify files that should remain protected, including system configuration files, user data, or other critical resources. This represents a classic path traversal vulnerability that operates at the file system level rather than through network-based attacks.
The operational impact of this vulnerability extends beyond simple unauthorized access, as local attackers can leverage this weakness to gain persistent access to sensitive information and potentially escalate privileges within the system. The ability to read arbitrary files exposes potential for data exfiltration, credential harvesting, and system reconnaissance, while the modification capability allows for persistent backdoor installation or system corruption. Attackers can exploit this vulnerability to compromise the integrity of web applications, access confidential user data, or establish footholds for further attacks within the network infrastructure.
Mitigation strategies for this vulnerability should focus on immediate patch application to upgrade to versions of 4D WebSTAR that properly validate symbolic link references and implement proper path resolution checks. System administrators should also implement strict file permissions and access controls, monitor for unauthorized symbolic link creation, and conduct regular security audits of web server configurations. The vulnerability aligns with CWE-367, which addresses the improper handling of symbolic links, and maps to ATT&CK technique T1059 for privilege escalation through file system manipulation. Organizations should also consider implementing automated monitoring solutions to detect suspicious symbolic link activities and establish comprehensive incident response procedures for potential exploitation attempts.