CVE-2018-8595 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory, aka "Windows GDI Information Disclosure Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, 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-2018-8596.
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Analysis
by VulDB Data Team • 06/18/2023
The vulnerability identified as CVE-2018-8595 represents a critical information disclosure flaw within the Windows Graphics Device Interface (GDI) component that exposes sensitive memory contents to unauthorized parties. This issue stems from improper handling of memory operations within the GDI subsystem, which is responsible for rendering graphics and managing visual elements across the Windows operating system. The vulnerability affects a broad range of Windows versions including legacy systems like Windows 7 and Server 2008, as well as newer releases such as Windows 10 and Server 2019, making it particularly concerning from a security perspective.
The technical flaw manifests when the GDI component fails to properly validate or sanitize memory access operations, allowing attackers to potentially read sensitive data from memory locations that should remain protected. This type of vulnerability falls under the CWE-200 category of "Information Exposure" and represents a classic case of improper information handling within system components. The vulnerability is particularly dangerous because GDI is deeply integrated into Windows operations and is frequently accessed by various applications and system processes, providing multiple potential attack vectors for exploitation.
The operational impact of this vulnerability extends beyond simple data leakage, as it could potentially enable attackers to extract sensitive information such as cryptographic keys, user credentials, or other confidential data stored in memory. Attackers could leverage this vulnerability to perform reconnaissance activities, gather intelligence about system configurations, or potentially escalate privileges within the compromised environment. The vulnerability's presence across multiple Windows versions creates widespread exposure, particularly in enterprise environments where legacy systems remain operational. This information disclosure could facilitate more sophisticated attacks by providing attackers with insights into system memory structures and potentially sensitive data patterns.
Security professionals should implement immediate mitigations including applying the relevant Microsoft security patches and updates, which address the underlying memory handling issues within the GDI component. Organizations should also consider implementing additional monitoring and detection measures to identify potential exploitation attempts. The vulnerability aligns with ATT&CK technique T1005 for "Data from Local System" and T1059 for "Command and Scripting Interpreter" as attackers might use the leaked information to develop more targeted attack strategies. Network segmentation and privilege separation measures can help limit the potential damage from successful exploitation, while regular security assessments should focus on identifying other potential information disclosure vulnerabilities within graphics and rendering components.