CVE-2017-8469 in Windows
Summary
by MITRE
The kernel in 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 Windows Server 2016 allows an authenticated attacker to obtain information via a specially crafted application. aka "Windows Kernel Information Disclosure Vulnerability," a different vulnerability than CVE-2017-8491, CVE-2017-8490, CVE-2017-8489, CVE-2017-8488, CVE-2017-8485, CVE-2017-8483, CVE-2017-8482, CVE-2017-8481, CVE-2017-8480, CVE-2017-8478, CVE-2017-8479, CVE-2017-8476, CVE-2017-8474, CVE-2017-8462, CVE-2017-0300, CVE-2017-0299, and CVE-2017-0297.
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Analysis
by VulDB Data Team • 08/21/2024
The vulnerability identified as CVE-2017-8469 represents a critical information disclosure flaw within the Windows kernel implementation that affects multiple versions 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 Gold, 1511, 1607, and Windows Server 2016. This vulnerability specifically manifests when an authenticated attacker executes a specially crafted application that exploits a flaw in the kernel's handling of certain data structures, leading to unauthorized information disclosure. The issue falls under the category of information disclosure vulnerabilities as defined by CWE-200, which encompasses weaknesses that allow attackers to gain access to information that should remain hidden or protected.
The technical exploitation of this vulnerability occurs through kernel-mode code execution where an authenticated user can manipulate specific kernel data structures to extract sensitive information from system memory. The flaw typically involves improper validation or handling of kernel objects that results in information leakage through memory dumps or other kernel interfaces. Attackers can leverage this vulnerability to obtain sensitive system information such as kernel memory addresses, system configuration details, or other confidential data that could aid in subsequent attacks. This information disclosure can provide attackers with valuable insights into the target system's architecture and internal state, enabling more sophisticated attack vectors. The vulnerability is particularly concerning because it requires only authenticated access to exploit, meaning that an attacker who has already gained user-level credentials can potentially escalate their access and gather intelligence for further compromise.
From an operational impact perspective, CVE-2017-8469 creates significant security implications for organizations running affected Windows versions, as it provides attackers with information that can be used to bypass security controls and refine attack strategies. The vulnerability can be leveraged as a stepping stone for more serious exploits, potentially leading to privilege escalation or lateral movement within a network. The information disclosure could reveal kernel memory layouts, which might be used to craft more effective buffer overflow attacks or other exploitation techniques. Security researchers have noted that this vulnerability aligns with ATT&CK technique T1007, which involves system service discovery, as the leaked information can reveal system internals and configuration details. Organizations may experience increased risk of successful attacks against their systems, particularly when combined with other vulnerabilities or when attackers have already achieved initial access through different means.
Mitigation strategies for CVE-2017-8469 should focus on both immediate patching and operational security measures. Microsoft released security updates that address this vulnerability through the standard Windows Update process, and organizations should prioritize applying these patches to all affected systems. Network segmentation and access controls should be implemented to limit the potential impact of successful exploitation attempts, particularly in environments where privileged accounts may be compromised. Security monitoring should be enhanced to detect unusual patterns of kernel memory access or information disclosure attempts, and system administrators should implement proper logging and alerting for kernel-level activities. Additionally, organizations should consider implementing application whitelisting and least privilege access controls to minimize the potential damage from authenticated attacks, while also maintaining regular security assessments to identify and remediate similar vulnerabilities in their infrastructure. The vulnerability demonstrates the importance of maintaining up-to-date security patches and the need for comprehensive security monitoring across all system components.