CVE-2019-1381 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows Servicing Stack allows access to unprivileged file locations, aka 'Microsoft Windows Information Disclosure Vulnerability'.
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Analysis
by VulDB Data Team • 02/11/2024
The CVE-2019-1381 vulnerability represents a significant information disclosure flaw within the Windows Servicing Stack component that enables unprivileged users to access file locations they should not be authorized to view. This vulnerability specifically affects the way Windows handles servicing operations and file access controls during system maintenance processes. The flaw exists in the Windows operating system's ability to properly enforce access restrictions when processing certain servicing stack operations, creating an avenue for unauthorized information retrieval.
This technical weakness stems from improper access control mechanisms within the Windows Servicing Stack, which is responsible for managing system updates and maintenance tasks. When the servicing stack processes certain operations, it fails to adequately validate or enforce privilege levels required for accessing specific file locations. The vulnerability allows a local unprivileged attacker to potentially read files that contain sensitive system information, configuration data, or user-related content that should remain protected. The flaw operates at the kernel level or system service layer where privilege escalation or access control bypass occurs during normal system operations.
The operational impact of CVE-2019-1381 extends beyond simple information disclosure, as the leaked data could potentially contain system configuration details, user credentials, or sensitive operational information that could be leveraged by attackers for further exploitation. This vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern for enterprise environments. The information disclosure could enable attackers to gather intelligence about system configurations, installed software, or user account details that would otherwise remain hidden from unauthorized access. This type of vulnerability directly relates to CWE-200, which addresses "Information Exposure" and aligns with ATT&CK technique T1082, "System Information Discovery," as it enables adversaries to gather system-level information without proper authorization.
Mitigation strategies for CVE-2019-1381 primarily focus on applying Microsoft security updates and patches that address the specific access control bypass in the Windows Servicing Stack. System administrators should prioritize immediate deployment of the relevant security patches released by Microsoft to remediate this vulnerability. Additionally, implementing proper access control measures, such as least privilege principles and mandatory access controls, can help reduce the potential impact of exploitation. Network segmentation and monitoring solutions should be employed to detect anomalous file access patterns that might indicate exploitation attempts. Organizations should also conduct regular vulnerability assessments to identify similar access control weaknesses in their Windows environments and ensure proper system hardening practices are maintained. The vulnerability underscores the importance of maintaining up-to-date security patches and proper privilege management within enterprise environments to prevent unauthorized information access and potential escalation to more serious security incidents.