CVE-2002-1230 in Windows
Summary
by MITRE
NetDDE Agent on Windows NT 4.0, 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows local users to execute arbitrary code as LocalSystem via "shatter" style attack by sending a WM_COPYDATA message followed by a WM_TIMER message, as demonstrated by GetAd, aka "Flaw in Windows WM_TIMER Message Handling Could Enable Privilege Elevation."
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Analysis
by VulDB Data Team • 09/07/2025
The vulnerability described in CVE-2002-1230 represents a critical privilege escalation flaw within the Windows operating system family affecting Windows NT 4.0, Windows 2000, and Windows XP platforms. This issue resides in the NetDDE Agent component which handles dynamic data exchange operations within the Windows environment. The vulnerability specifically exploits the improper handling of Windows messages, particularly the WM_COPYDATA and WM_TIMER message sequences that are fundamental to inter-process communication mechanisms in the Windows operating system.
The technical flaw manifests through a sophisticated attack pattern that leverages the Windows message handling system to execute malicious code with elevated privileges. Attackers can exploit this vulnerability by crafting and sending a WM_COPYDATA message followed by a WM_TIMER message to the vulnerable NetDDE Agent process. This sequence triggers a race condition or message processing error that allows local attackers to escalate their privileges from standard user level to LocalSystem level, which represents the highest privilege level available in Windows systems. The attack mechanism falls under the category of message-based privilege escalation attacks and demonstrates how seemingly benign Windows messaging functionality can be weaponized for system compromise.
The operational impact of this vulnerability is severe as it provides local attackers with complete system control without requiring any network connectivity or external exploitation vectors. Once successfully exploited, the attacker gains LocalSystem privileges which means they can perform any action on the target system including installing malicious software, modifying system files, accessing all user data, and potentially establishing persistent access. This vulnerability is particularly dangerous because it requires no special privileges to exploit and can be executed by any local user with access to the system. The attack vector is relatively simple to implement and does not require sophisticated tools or extensive knowledge of system internals, making it a significant threat to organizations running affected Windows versions.
Mitigation strategies for this vulnerability should focus on immediate patching of affected systems through Microsoft security updates, as this represents a known and documented flaw in the Windows operating system. Organizations should also implement strict access controls and user privilege management to limit local user access where possible. The vulnerability demonstrates the importance of proper message handling in system components and highlights the need for robust input validation in all Windows messaging operations. From a cybersecurity perspective, this vulnerability aligns with attack techniques described in the MITRE ATT&CK framework under privilege escalation tactics, specifically targeting Windows message handling mechanisms. System administrators should also consider implementing monitoring solutions to detect unusual message traffic patterns that might indicate exploitation attempts. The vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches and the potential consequences of running unsupported operating system versions in enterprise environments.