CVE-2004-1324 in Windows
Summary
by MITRE
The Microsoft Windows Media Player 9.0 ActiveX control may allow remote attackers to execute arbitrary web script in the Local computer zone via the (1) artist or (2) song fields of a music file, if the file is processed using Internet Explorer.
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Analysis
by VulDB Data Team • 09/25/2025
The vulnerability identified as CVE-2004-1324 represents a critical cross-site scripting flaw within Microsoft Windows Media Player 9.0 ActiveX control that enables remote code execution through web-based attacks. This vulnerability specifically affects systems running Windows Media Player 9.0 when processing media files through Internet Explorer browser environments. The flaw exists in the way the ActiveX control handles metadata fields within music files, particularly the artist and song fields, which can be manipulated to contain malicious script code that executes in the local computer zone with elevated privileges.
The technical implementation of this vulnerability stems from insufficient input validation within the Windows Media Player ActiveX control. When Internet Explorer processes a music file containing specially crafted artist or song metadata fields, the control fails to properly sanitize the input data before rendering it within the browser context. This lack of proper sanitization creates an environment where attacker-controlled script code can be executed with the privileges of the local user, effectively bypassing standard browser security restrictions. The vulnerability is particularly dangerous because it leverages the trusted ActiveX control mechanism to execute malicious code in the local computer zone, which typically has higher privilege levels than typical web content.
From an operational impact perspective, this vulnerability presents significant security risks to enterprise environments and individual users alike. Attackers can exploit this flaw by hosting malicious music files on web servers or embedding them in email attachments, leading to automatic execution when users open the files through Internet Explorer. The local computer zone execution context means that the malicious script can access local system resources, potentially leading to complete system compromise. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws, and represents a classic example of how ActiveX controls can be weaponized to bypass browser security models. The attack vector operates entirely through web-based delivery mechanisms, making it particularly effective for phishing campaigns and drive-by download scenarios.
The exploitation of CVE-2004-1324 demonstrates how legacy ActiveX controls can contain fundamental security flaws that persist across multiple system versions. Organizations should implement immediate mitigations including disabling ActiveX controls in web browsers, updating to patched versions of Windows Media Player, and implementing network-based security controls such as web application firewalls to block suspicious script content. Users should be educated about the risks of opening unknown media files and the importance of keeping their systems updated. The vulnerability also highlights the importance of the principle of least privilege, where ActiveX controls should be configured to run with minimal necessary permissions. This case study reinforces the ATT&CK framework's concept of initial access through malicious files, where the attack surface is expanded through trusted software components that fail to properly validate user input, ultimately leading to privilege escalation and persistent access within target environments.