CVE-2019-1073 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory, aka 'Windows Kernel Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-1071.
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Analysis
by VulDB Data Team • 07/02/2020
The vulnerability described in CVE-2019-1073 represents a critical information disclosure flaw within the Windows kernel operating system architecture. This weakness manifests when the kernel fails to properly manage memory objects, creating opportunities for unauthorized data exposure that could compromise system security. The vulnerability specifically affects how the Windows kernel handles memory objects during normal operational procedures, potentially allowing malicious actors to extract sensitive information that should remain protected within kernel space. The issue is particularly concerning because it operates at the core level of the operating system where critical system information and credentials are typically stored.
The technical implementation of this vulnerability stems from improper memory handling mechanisms within the kernel's object management subsystem. When the Windows kernel processes memory objects, it fails to adequately validate or sanitize the memory structures, leading to potential information leakage through various attack vectors. This flaw allows attackers to potentially access kernel memory regions that contain sensitive data such as system credentials, encryption keys, or other confidential information. The vulnerability's impact is amplified by the fact that kernel-level operations typically have elevated privileges and access to the most sensitive system resources. According to CWE standards, this vulnerability maps to CWE-200, which specifically addresses the improper exposure of information, and the ATT&CK framework categorizes this under privilege escalation techniques that leverage kernel-level weaknesses.
The operational impact of CVE-2019-1073 extends beyond simple information disclosure, as the leaked data could enable more sophisticated attacks within the compromised system. Attackers could potentially use the exposed information to conduct further exploitation attempts, including credential harvesting, privilege escalation, or targeted attacks against other system components. The vulnerability's exploitation requires minimal privileges and can be executed through various attack vectors including malicious software or specially crafted memory operations. Organizations running affected Windows systems face significant risk of unauthorized access and potential system compromise, particularly in environments where sensitive data processing occurs. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern across enterprise environments.
Mitigation strategies for this vulnerability should prioritize immediate patch deployment through Microsoft's security updates, which address the underlying memory handling issues within the kernel. System administrators should implement comprehensive monitoring solutions to detect potential exploitation attempts and establish network segmentation to limit the potential impact of successful attacks. Additional protective measures include implementing kernel-mode code integrity checks, enabling exploit protection features, and conducting regular security assessments to identify potential attack vectors. The vulnerability also highlights the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies that reduce the attack surface for kernel-level exploits. Organizations should also consider implementing advanced threat detection solutions that can identify anomalous memory access patterns or information disclosure attempts that may indicate exploitation of this vulnerability.