CVE-2002-0430 in Cobalt Raq
Summary
by MITRE
MultiFileUploadHandler.php in the Sun Cobalt RaQ XTR administration interface allows local users to bypass authentication and overwrite arbitrary files via a symlink attack on a temporary file, followed by a request to MultiFileUpload.php.
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Analysis
by VulDB Data Team • 01/01/2025
The vulnerability identified as CVE-2002-0430 resides within the Sun Cobalt RaQ XTR administration interface, specifically in the MultiFileUploadHandler.php component. This flaw represents a critical security weakness that enables local attackers to circumvent authentication mechanisms and perform arbitrary file overwrites through a sophisticated symlink attack technique. The vulnerability exploits a fundamental flaw in how temporary files are handled during the file upload process, creating a window of opportunity for privilege escalation and potential system compromise.
The technical implementation of this vulnerability stems from improper handling of temporary files during the upload process. When MultiFileUploadHandler.php processes file uploads, it creates temporary files that are subsequently referenced by MultiFileUpload.php. Attackers can manipulate this workflow by creating symbolic links that point to sensitive system files, allowing them to overwrite critical files with malicious content. This technique exploits the predictable naming conventions and inadequate validation of temporary file paths, enabling attackers to gain unauthorized access to system resources. The vulnerability aligns with CWE-377, which addresses insecure temporary file handling, and CWE-284, which covers improper access control mechanisms. The attack vector specifically follows the pattern of privilege escalation through file system manipulation.
The operational impact of this vulnerability extends beyond simple authentication bypass, as it provides attackers with the capability to overwrite system-critical files, potentially leading to complete system compromise. Local users who can execute the symlink attack gain the ability to modify configuration files, system binaries, or other sensitive components that could alter system behavior or provide persistent access. This vulnerability particularly affects systems where the administration interface runs with elevated privileges, as the file overwrites could potentially be used to install backdoors, modify system configurations, or escalate privileges to root access. The attack requires local system access but does not need network connectivity, making it particularly dangerous in environments where local access is not properly restricted.
Mitigation strategies for CVE-2002-0430 should focus on implementing robust temporary file handling mechanisms and strengthening access controls within the administration interface. Organizations should ensure that temporary files are created with proper permissions and are not accessible to unauthorized users. The implementation of proper file path validation and the use of secure temporary file creation functions can prevent the symlink attack vector. Additionally, regular security audits of web application components should be conducted to identify similar vulnerabilities in file handling processes. This vulnerability demonstrates the importance of following secure coding practices as outlined in the OWASP Top Ten and aligns with ATT&CK technique T1059 for command and scripting interpreter usage, as attackers may leverage this vulnerability to execute malicious code through file overwrites. System administrators should also consider implementing monitoring solutions that can detect unauthorized file modifications and temporary file creation activities that could indicate exploitation attempts.