CVE-2017-8708 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-2017-8679, CVE-2017-8709, and CVE-2017-8719.
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Analysis
by VulDB Data Team • 10/07/2024
The Windows kernel component vulnerability identified as CVE-2017-8708 represents a critical information disclosure flaw that affects multiple versions of Microsoft Windows operating systems including server and client variants. This vulnerability specifically targets the kernel's memory management operations and occurs when the system improperly handles objects in memory, creating potential exposure of sensitive data to unauthorized users or processes. The vulnerability impacts 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, making it a widespread concern across the Microsoft Windows ecosystem. The flaw falls under the category of information disclosure vulnerabilities that can potentially allow attackers to extract confidential information from system memory, thereby compromising system security and data integrity.
The technical implementation of this vulnerability stems from improper handling of memory objects within the Windows kernel, which operates at the highest privilege level and manages critical system resources. When the kernel processes certain memory operations, it fails to properly validate or sanitize object references, leading to potential information leakage through memory corruption or improper access control mechanisms. This type of vulnerability typically occurs during kernel-mode operations where the system's core functions interact with memory management units and virtual memory systems. The vulnerability is particularly concerning because kernel-level flaws can provide attackers with elevated privileges and access to sensitive system information that would normally be protected by the operating system's security model. According to CWE standards, this vulnerability maps to CWE-200, which describes "Information Exposure" and specifically addresses situations where information is exposed to unauthorized actors through improper access control or memory handling. The vulnerability's classification aligns with ATT&CK technique T1003.001 which covers "OS Credential Dumping: LSASS Memory" and demonstrates how kernel-level information disclosure can enable credential harvesting and privilege escalation.
The operational impact of CVE-2017-8708 extends beyond simple information disclosure, as it can serve as a precursor to more severe attacks within the Windows environment. Attackers who successfully exploit this vulnerability may gain access to memory contents that could include system credentials, encryption keys, or other sensitive data that could be leveraged for further compromise. The vulnerability's presence in both server and client operating systems creates a broad attack surface, potentially allowing adversaries to target enterprise environments through various entry points. Organizations running affected systems face significant risk of data breaches, privilege escalation attacks, and potential lateral movement within their networks. The vulnerability's persistence across multiple Windows versions indicates that it represents a fundamental flaw in the kernel's memory management implementation rather than a simple patchable issue. Security researchers have noted that this vulnerability can be particularly dangerous when combined with other exploits, as it provides attackers with valuable information that can be used to craft more sophisticated attacks against the targeted systems.
Mitigation strategies for CVE-2017-8708 should prioritize immediate patch deployment through Microsoft's regular security updates, as the vulnerability has been addressed through official Microsoft security bulletins. Organizations should implement comprehensive vulnerability management processes to ensure all affected systems receive timely updates and patches. Network segmentation and access control measures can help limit the potential impact of successful exploitation attempts, while monitoring systems should be configured to detect anomalous memory access patterns or information disclosure attempts. Security teams should also consider implementing additional protective measures such as kernel mode drivers protection, memory integrity checks, and regular security assessments to identify potential exploitation attempts. The vulnerability's classification as a kernel-level issue makes it particularly important to maintain up-to-date system configurations and to implement defense-in-depth strategies that include both preventive measures and detection capabilities. Organizations should also conduct regular security awareness training for administrators to ensure proper patch management procedures and to understand the critical nature of kernel-level vulnerabilities that can significantly impact overall system security posture.