CVE-2017-11817 in Windows
Summary
by MITRE
The Microsoft 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 validates objects in memory, aka "Windows Information Disclosure Vulnerability".
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Analysis
by VulDB Data Team • 09/10/2024
The vulnerability identified as CVE-2017-11817 represents a critical information disclosure flaw within the Microsoft Windows Kernel component that affects multiple operating system versions across desktop and server platforms. This vulnerability stems from improper validation of objects in memory, creating a pathway for malicious actors to potentially access sensitive system information. The affected systems include 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. The kernel component serves as the core of the operating system, managing system resources and hardware interactions, making this vulnerability particularly concerning from a security perspective.
The technical nature of this vulnerability falls under CWE-200, which specifically addresses "Information Exposure," and aligns with ATT&CK technique T1005 for "Data from Local System." The flaw occurs when the Windows Kernel fails to properly validate objects in memory, allowing for potential information disclosure through memory corruption or manipulation techniques. This improper validation creates opportunities for attackers to extract sensitive data from system memory, potentially including credentials, system configuration details, or other confidential information. The vulnerability's exploitation typically involves crafting specific inputs or conditions that trigger the kernel's memory validation failure, leading to unauthorized data access.
The operational impact of CVE-2017-11817 extends beyond simple information disclosure, as the compromised system memory could contain valuable data that could be leveraged for further attacks. Attackers might use the disclosed information to conduct more sophisticated attacks such as privilege escalation, lateral movement within networks, or targeted exploitation of other system components. The wide range of affected platforms increases the potential attack surface significantly, as organizations running any of these operating systems could be vulnerable. This vulnerability particularly affects enterprise environments where multiple systems may be running the affected versions, potentially allowing attackers to gather comprehensive system intelligence for more targeted attacks.
Mitigation strategies for CVE-2017-11817 primarily focus on applying Microsoft's official security patches and updates released through Windows Update or Microsoft Update Catalog. Organizations should prioritize immediate patch deployment across all affected systems, particularly those running older operating system versions such as Windows Server 2008 and Windows 7. Additional protective measures include implementing network segmentation to limit potential lateral movement, monitoring for suspicious system behavior or unusual memory access patterns, and maintaining comprehensive system logging for forensic analysis. Security teams should also consider deploying intrusion detection systems that can identify potential exploitation attempts targeting this vulnerability. The vulnerability's classification as a kernel-level flaw makes traditional endpoint protection solutions less effective, emphasizing the need for comprehensive patch management and system hardening strategies. Regular security assessments and vulnerability scanning should be conducted to ensure all systems remain protected against this and similar information disclosure vulnerabilities.