CVE-2020-1360 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows Profile Service improperly handles file operations, aka 'Windows Profile Service Elevation of Privilege Vulnerability'.
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Analysis
by VulDB Data Team • 10/30/2020
The Windows Profile Service elevation of privilege vulnerability represents a critical security flaw that allows attackers to escalate their privileges on affected systems. This vulnerability specifically targets the Windows Profile Service component responsible for managing user profiles and associated file operations. The issue arises from improper handling of file operations within the service, creating opportunities for malicious actors to gain unauthorized access to system resources and elevate their privileges from standard user level to administrative rights. The vulnerability affects multiple Windows operating systems including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern for enterprise environments.
The technical root cause of this vulnerability stems from inadequate input validation and privilege separation within the Windows Profile Service implementation. When the service processes certain file operations, it fails to properly validate file paths and permissions, allowing attackers to manipulate the service behavior through crafted file operations. This flaw enables malicious code execution in the context of the SYSTEM account, which represents the highest privilege level on Windows systems. The vulnerability can be exploited through various attack vectors including malicious profile files, symbolic links, or direct manipulation of profile service components. According to CWE standards, this represents a weakness in privilege management and improper file handling, specifically categorized under CWE-264 and CWE-276. The ATT&CK framework identifies this as a privilege escalation technique using service manipulation, specifically targeting Windows Profile Service as a means to gain elevated system access.
The operational impact of this vulnerability extends beyond simple privilege escalation, potentially enabling complete system compromise and persistent access for attackers. Once an attacker successfully exploits this vulnerability, they can access sensitive system files, modify critical registry entries, install backdoors, and establish persistence mechanisms. The vulnerability's exploitation typically requires minimal user interaction, making it particularly dangerous in enterprise environments where user accounts may have varying privilege levels. Organizations running affected Windows versions face significant risk of data breaches, lateral movement within networks, and potential complete system compromise. The vulnerability's impact is amplified in environments where users have local administrative privileges or where profile synchronization features are enabled, as these scenarios provide more opportunities for exploitation.
Mitigation strategies for this vulnerability require immediate patch deployment through Microsoft's security updates, specifically addressing the Windows Profile Service file operation handling. Organizations should implement comprehensive monitoring of profile service activities and file system changes related to user profiles. Network segmentation and privilege minimization practices can reduce the potential impact of successful exploitation attempts. System administrators should conduct thorough vulnerability assessments to identify systems running affected Windows versions and prioritize patching efforts. Additional protective measures include implementing strict file system permissions, disabling unnecessary profile synchronization features, and monitoring for suspicious service activities. The Microsoft Security Response Center recommends immediate deployment of the relevant security updates and implementation of defense-in-depth strategies to protect against potential exploitation attempts. Regular security audits and vulnerability management processes should be enhanced to prevent similar issues from occurring in the future, with particular attention to service privilege handling and file operation validation mechanisms.