CVE-2017-8709 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-2017-8679, and CVE-2017-8719.
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Analysis
by VulDB Data Team • 10/07/2024
The Windows kernel information disclosure vulnerability identified as CVE-2017-8709 represents a critical security flaw within Microsoft Windows operating systems that affects multiple versions 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 Gold, 1511, 1607, and 1703, as well as Windows Server 2016. This vulnerability falls under the category of information disclosure flaws that can potentially expose sensitive system information to unauthorized parties. The flaw specifically manifests when the Windows kernel component fails to properly handle objects in memory, creating opportunities for attackers to extract confidential data from system memory.
The technical nature of this vulnerability stems from improper memory management within the kernel, where objects are not correctly validated or sanitized before being processed. This mismanagement allows for information leakage through mechanisms that should normally be protected from unauthorized access. The vulnerability is classified as a memory corruption issue that can be exploited to disclose kernel memory contents, potentially revealing sensitive information such as cryptographic keys, system credentials, or other confidential data that could be leveraged in subsequent attacks. The flaw operates at the kernel level, making it particularly dangerous as it can provide attackers with elevated privileges and access to system internals that are normally protected from user-space applications.
From an operational impact perspective, this vulnerability creates significant risks for organizations running affected Windows systems, as it can enable attackers to gather intelligence that facilitates more sophisticated attacks. The information disclosure could potentially lead to privilege escalation, credential theft, or system compromise, especially when combined with other vulnerabilities in the same vulnerability family. Security researchers have noted that this vulnerability is particularly concerning because it affects such a wide range of Windows versions, including both server and client operating systems, making it a prime target for widespread exploitation. The vulnerability's presence in Windows Server 2008 and 2012 releases indicates that legacy systems remain at risk, despite their age, highlighting the importance of maintaining up-to-date security patches across all system components.
Organizations should implement immediate mitigations including applying the relevant Microsoft security updates and patches released for this vulnerability. The remediation process involves ensuring that all affected systems receive the necessary security updates from Microsoft, which typically address the memory handling issues within the kernel component. System administrators should also consider implementing additional security controls such as memory protection mechanisms, enhanced monitoring for unusual memory access patterns, and regular vulnerability assessments to identify systems that may not have received the necessary patches. The vulnerability aligns with CWE-200, which describes weaknesses that can lead to information exposure, and may be leveraged as part of broader attack strategies that follow the ATT&CK framework's privilege escalation tactics. Organizations should also consider implementing network segmentation and access controls to limit the potential impact of successful exploitation attempts, particularly given the broad scope of affected systems and the potential for lateral movement once initial access is achieved.