CVE-2017-8719 in Windows
Summary
by MITRE
The Windows kernel component on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an information disclosure vulnerability when it improperly handles objects in memory, aka "Windows Kernel Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-8708, CVE-2017-8709, and CVE-2017-8679.
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Analysis
by VulDB Data Team • 10/07/2024
The Windows kernel information disclosure vulnerability identified as CVE-2017-8719 represents a critical flaw in Microsoft's operating system kernel implementation that affects multiple versions of Windows Server and client operating systems. This vulnerability specifically resides within the kernel component responsible for memory management and object handling, creating a pathway for unauthorized information disclosure that could compromise system security. The flaw manifests when the kernel improperly processes objects in memory, leading to potential exposure of sensitive data that should remain protected within system boundaries. This issue impacts a broad range of Microsoft operating systems including Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 versions 1511, 1607, and 1703, as well as Windows Server 2016, making it a widespread concern across Microsoft's ecosystem.
The technical nature of this vulnerability stems from improper memory object handling within the kernel's memory management subsystem, which falls under the CWE-200 category of "Information Exposure" and specifically relates to improper handling of memory objects. The flaw occurs when the kernel fails to properly validate or sanitize memory objects during processing, potentially allowing attackers to access memory locations that should be protected or restricted. This type of vulnerability represents a classic information disclosure weakness where the system's memory management mechanisms do not adequately prevent unauthorized access to sensitive data structures or memory contents. The vulnerability's classification as an information disclosure issue aligns with ATT&CK technique T1005 which covers data from local system, and T1082 which covers system information discovery, as attackers could potentially leverage this flaw to gather system information and memory contents.
The operational impact of CVE-2017-8719 extends beyond simple information disclosure, as it could enable attackers to gain insights into system memory layouts, kernel structures, and potentially sensitive data that resides in memory. This information could then be used to facilitate more sophisticated attacks or to develop additional exploits that target other vulnerabilities within the system. The vulnerability's presence across multiple Windows versions means that organizations running affected systems face significant risk, particularly in enterprise environments where the kernel's memory management is critical for system security. Attackers could potentially use this information to bypass security mechanisms, understand system behavior, or develop more targeted attacks against other components of the operating system. The vulnerability's impact is particularly concerning because it operates at the kernel level, where the most privileged system functions occur, making it a valuable target for attackers seeking to escalate privileges or gain deeper system access.
Mitigation strategies for CVE-2017-8719 should prioritize immediate patch deployment through Microsoft's security updates, as the vulnerability has been addressed through official Microsoft security bulletins. Organizations should implement comprehensive patch management procedures to ensure all affected systems receive the necessary updates promptly. Additionally, network segmentation and monitoring should be enhanced to detect potential exploitation attempts, as this vulnerability could be leveraged as part of broader attack campaigns. System administrators should also consider implementing memory protection mechanisms and monitoring for unusual memory access patterns that might indicate exploitation attempts. The vulnerability's nature as a kernel-level information disclosure makes it particularly important to maintain up-to-date security configurations and to ensure that all systems are running the latest security patches. Organizations should also conduct thorough security assessments to identify any potential exploitation attempts and implement appropriate monitoring solutions to detect anomalous behavior that might indicate this vulnerability is being targeted.