CVE-2003-0480 in Workstation
Summary
by MITRE
VMware Workstation 4.0 for Linux allows local users to overwrite arbitrary files and gain privileges via "symlink manipulation."
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/14/2018
The vulnerability identified as CVE-2003-0480 represents a critical privilege escalation flaw in VMware Workstation 4.0 for Linux systems. This issue stems from inadequate handling of symbolic link manipulation during file operations, creating a pathway for local attackers to exploit the system's security model. The vulnerability specifically affects the virtualization environment's file management processes, where the software fails to properly validate or sanitize symbolic link references during critical operations.
The technical flaw manifests when VMware Workstation processes files that contain symbolic links, particularly during virtual machine configuration file handling or disk image operations. Local users can craft malicious symbolic link structures that, when processed by the vulnerable software, result in arbitrary file overwrite conditions. This occurs because the system does not properly resolve or validate symbolic link targets before performing file operations, allowing attackers to manipulate the file system in unintended ways. The flaw essentially enables a local user to bypass normal file access controls and potentially gain elevated privileges through carefully constructed file manipulation sequences.
The operational impact of this vulnerability extends beyond simple file manipulation to encompass potential privilege escalation and system compromise. An attacker with local access can leverage this weakness to overwrite critical system files, modify configuration data, or inject malicious code into the virtualization environment. This creates a significant risk for systems where VMware Workstation runs with elevated privileges or where multiple users share the same host system. The vulnerability is particularly dangerous in environments where virtual machines are used for sensitive operations, as it could enable attackers to compromise the entire virtualization infrastructure and potentially access data from other virtual machines running on the same host.
Mitigation strategies for this vulnerability require immediate system hardening and software updates to address the symbolic link handling flaws. Organizations should apply the vendor-provided patches that correct the file validation mechanisms and implement proper symbolic link resolution procedures within the virtualization environment. Additionally, system administrators should review and restrict file permissions for VMware Workstation related directories, ensuring that only authorized users can create or modify symbolic links within the virtualization framework. The implementation of proper access controls and monitoring mechanisms can help detect anomalous file system activities that might indicate exploitation attempts. This vulnerability aligns with CWE-59 and CWE-276 categories, representing a classic case of insufficient symbolic link validation and improper file permissions. From an attack perspective, this flaw would map to techniques in the privilege escalation and persistence phases of the ATT&CK framework, potentially enabling attackers to establish more persistent access to the compromised systems.