CVE-1999-0268 in MetaWeb
Summary
by MITRE
MetaInfo MetaWeb web server allows users to upload, execute, and read scripts.
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Analysis
by VulDB Data Team • 12/08/2024
The vulnerability identified as CVE-1999-0268 affects the MetaInfo MetaWeb web server implementation, representing a critical security flaw that enables unauthorized users to upload, execute, and read arbitrary scripts on the affected system. This vulnerability stems from inadequate input validation and insufficient access controls within the web server's file handling mechanisms, creating a pathway for malicious actors to gain persistent control over the affected infrastructure. The issue fundamentally compromises the server's integrity and confidentiality by allowing arbitrary code execution through script upload capabilities that bypass normal security boundaries. The vulnerability exists within the web server's scripting interface where user-supplied content is not properly sanitized or restricted, enabling attackers to deploy malicious payloads directly onto the target system. This weakness aligns with CWE-22, which addresses improper limitation of a pathname to a restricted directory, and CWE-74, which covers injection flaws, specifically demonstrating how insufficient input validation can lead to arbitrary code execution.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass complete system compromise and potential data breaches. An attacker exploiting this vulnerability can upload malicious scripts that persist on the server, allowing for ongoing unauthorized access and control. The ability to read scripts also provides attackers with insight into existing system configurations, potentially revealing sensitive information about the internal architecture and security measures. This vulnerability can be leveraged for various malicious activities including data exfiltration, system reconnaissance, and establishment of persistent backdoors. The attack surface is particularly concerning given that the vulnerability affects a web server implementation that typically handles sensitive user data and business-critical applications. According to ATT&CK framework, this vulnerability maps to T1190 - Exploit Public-Facing Application and T1059 - Command and Scripting Interpreter, demonstrating how attackers can leverage web server vulnerabilities to execute malicious code and establish persistence.
Mitigation strategies for CVE-1999-0268 require immediate implementation of multiple defensive layers to protect against exploitation attempts. Organizations should implement strict input validation and sanitization for all user-supplied content, particularly within file upload mechanisms. The web server configuration must enforce proper access controls and file type restrictions to prevent execution of unauthorized scripts. Network segmentation and firewall rules should be implemented to limit access to the affected web server to only authorized personnel and systems. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in the web server implementation. The solution approach should include implementing Content Security Policies, disabling unnecessary web server features, and ensuring proper file permissions are enforced. Additionally, organizations should establish robust monitoring and logging mechanisms to detect unauthorized script uploads or executions, as these activities represent clear indicators of compromise. The vulnerability underscores the importance of following secure coding practices and implementing defense-in-depth strategies to protect against similar weaknesses in web server implementations.