CVE-2007-5352 in Windows
Summary
by MITRE
Unspecified vulnerability in Local Security Authority Subsystem Service (LSASS) in Microsoft Windows 2000 SP4, XP SP2, and Server 2003 SP1 and SP2 allows local users to gain privileges via a crafted local procedure call (LPC) request.
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Analysis
by VulDB Data Team • 06/02/2025
The vulnerability described in CVE-2007-5352 resides within the Local Security Authority Subsystem Service component of Microsoft Windows operating systems, specifically affecting Windows 2000 Service Pack 4, Windows XP Service Pack 2, and Windows Server 2003 Service Packs 1 and 2. This represents a critical privilege escalation flaw that operates at the kernel level, where the Local Security Authority Subsystem Service manages security policies and authenticates users within the Windows environment. The LSASS service maintains the security context for all security-relevant operations and serves as the primary interface for authentication and authorization functions within the Windows security architecture.
The technical exploitation of this vulnerability occurs through a crafted local procedure call request that targets the LSASS service's handling of inter-process communication mechanisms. Local Procedure Calls represent a Windows IPC mechanism that allows communication between processes, particularly between user-mode applications and kernel-mode services. The flaw manifests when the LSASS service fails to properly validate or sanitize incoming LPC requests, allowing a local attacker to construct malicious requests that can manipulate the service's execution flow. This vulnerability falls under the CWE-119 category of "Improper Restriction of Operations within the Bounds of a Memory Buffer" and represents a classic case of inadequate input validation in kernel-mode code. The vulnerability specifically relates to the Windows security subsystem's failure to properly enforce access controls during LPC message processing, creating a path for privilege escalation attacks.
From an operational perspective, this vulnerability presents a significant threat to system security as it enables local users to escalate their privileges from standard user level to system level without requiring network access or external exploitation vectors. The attack requires only local system access, making it particularly dangerous in multi-user environments where users might have legitimate access to systems but should not possess administrative privileges. The impact extends beyond simple privilege escalation to potentially allow attackers to gain complete system control, access sensitive data, modify system configurations, or establish persistent backdoors. This vulnerability directly maps to ATT&CK technique T1068 which describes "Local Privilege Escalation" and T1547.001 which covers "Registry Run Keys / Startup Folder" as attackers could use elevated privileges to establish persistence mechanisms. The attack surface is particularly concerning in enterprise environments where Windows 2000 and Windows Server 2003 systems might still be operational, as these operating systems are no longer supported by Microsoft and lack modern security features.
Mitigation strategies for this vulnerability should focus on immediate patch management to address the underlying LSASS service implementation flaw, though given the age of the affected systems, this may not be feasible for legacy environments. Organizations should implement strict access controls and user privilege management to minimize the potential impact of local privilege escalation attacks. Network segmentation and the principle of least privilege should be enforced to prevent attackers from leveraging this vulnerability to move laterally within the network. Additionally, monitoring for unusual LSASS behavior and implementing security information and event management solutions can help detect exploitation attempts. System hardening measures including disabling unnecessary services and restricting local user access to system resources should be implemented. The vulnerability underscores the importance of maintaining current security patches and the risks associated with running unsupported operating systems in enterprise environments. For systems where patching is not immediately possible, network-based security controls and user access restrictions become critical defensive measures. Regular security assessments and vulnerability scanning should be conducted to identify systems running affected operating systems and prioritize remediation efforts accordingly.