CVE-2018-8341 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory, aka "Windows Kernel Information Disclosure Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8348.
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Analysis
by VulDB Data Team • 05/01/2023
The vulnerability described in CVE-2018-8341 represents a critical information disclosure flaw within the Windows kernel's memory management subsystem. This weakness stems from improper handling of kernel objects in memory, creating a pathway for unauthorized information exposure that could potentially compromise system security. The vulnerability affects multiple Windows operating systems spanning several versions including Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, and various Windows 10 server editions. The issue falls under the CWE-200 category of "Information Exposure" and aligns with ATT&CK technique T1005 which focuses on data from local system. The root cause involves the kernel's failure to properly validate or sanitize memory objects during processing, potentially allowing attackers to extract sensitive information through crafted memory access patterns.
The technical exploitation of this vulnerability occurs when malicious actors leverage the improper memory object handling to perform information disclosure attacks against the Windows kernel. Attackers can potentially access kernel memory regions that should remain protected, gaining insights into system internals, memory layouts, or sensitive data structures. This type of vulnerability typically requires a low-privilege attacker to execute code that triggers the problematic memory handling path. The vulnerability's impact extends beyond simple information leakage as it can provide attackers with critical system information that may facilitate further exploitation attempts. The flaw essentially creates a window through which adversaries can gather intelligence about the kernel's internal state, potentially enabling more sophisticated attacks such as privilege escalation or targeted exploitation of other system components.
The operational impact of CVE-2018-8341 poses significant risks to organizations running affected Windows systems, particularly in enterprise environments where system integrity and data protection are paramount. The vulnerability can lead to information exposure that might reveal kernel memory addresses, system configuration details, or other sensitive data that could be leveraged in subsequent attacks. Organizations may experience increased risk of privilege escalation attacks, as the leaked information could help attackers craft more effective exploitation strategies against other system components. The widespread nature of affected systems means that numerous endpoints across different environments could be vulnerable, creating a substantial attack surface that security teams must address. This vulnerability particularly affects systems that handle sensitive data or operate in high-security environments where information disclosure could result in significant operational or compliance impacts.
Mitigation strategies for CVE-2018-8341 should prioritize immediate patch deployment from Microsoft, as the vulnerability requires kernel-level fixes to address the root cause. Organizations should implement comprehensive vulnerability management processes that include regular security updates and system hardening measures. Network segmentation and access controls can help limit the potential impact of successful exploitation attempts by reducing the attack surface available to adversaries. Security monitoring should be enhanced to detect anomalous memory access patterns or information disclosure attempts that might indicate exploitation of this vulnerability. System administrators should also consider implementing additional security controls such as kernel patch protection mechanisms and runtime application control to prevent unauthorized code execution. The vulnerability's classification as an information disclosure issue means that organizations should also review their data protection policies and implement additional safeguards to protect against potential data exposure that could result from successful exploitation attempts.