CVE-2003-0051 in Quicktime Streaming Server
Summary
by MITRE
parse_xml.cgi in Apple Darwin Streaming Administration Server 4.1.2 and QuickTime Streaming Server 4.1.1 allows remote attackers to obtain the physical path of the server s installation path via a NULL file parameter.
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Analysis
by VulDB Data Team • 08/25/2025
The vulnerability identified as CVE-2003-0051 affects Apple Darwin Streaming Administration Server version 4.1.2 and QuickTime Streaming Server version 4.1.1, representing a critical information disclosure flaw in media streaming server software. This vulnerability resides within the parse_xml.cgi component, which serves as a crucial administrative interface for managing streaming server configurations and operations. The flaw manifests when the server processes XML input through the parse_xml.cgi script without proper validation of file parameters, creating an avenue for remote attackers to extract sensitive system information.
The technical implementation of this vulnerability stems from inadequate input sanitization within the XML parsing functionality. When a remote attacker submits a specially crafted request containing a NULL file parameter to the parse_xml.cgi endpoint, the server fails to properly validate or sanitize this input before processing. This processing error results in the server inadvertently revealing its physical installation path through error messages or response content. The vulnerability operates at the application layer and can be exploited through network-based attacks without requiring authentication or prior access to the system.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked physical path information provides attackers with critical system layout details that can facilitate subsequent exploitation attempts. The exposed installation paths may reveal directory structures, file locations, and potentially sensitive configuration information that could be leveraged in combination with other vulnerabilities. This information disclosure creates a foundation for more sophisticated attacks including directory traversal, privilege escalation, and targeted exploitation of other system components. The vulnerability affects organizations using legacy streaming server implementations that have not been updated to address this flaw.
Security practitioners should consider this vulnerability in the context of CWE-200, which categorizes information exposure flaws, and its relationship to broader attack patterns documented in the MITRE ATT&CK framework under initial access and reconnaissance techniques. Organizations should implement immediate mitigations including patching affected systems to the latest available versions, implementing network segmentation to limit access to administrative interfaces, and deploying web application firewalls to filter malicious requests. The vulnerability highlights the importance of proper input validation and error handling in web applications, particularly those handling XML processing, and serves as a reminder of the critical need for regular security updates in legacy systems. Additionally, organizations should conduct comprehensive security assessments to identify similar input validation weaknesses in other components of their streaming infrastructure.