CVE-2020-0963 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 CVE ID is unique from CVE-2020-1141, CVE-2020-1145, CVE-2020-1179.
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Analysis
by VulDB Data Team • 10/16/2020
The Windows Graphics Device Interface GDI component represents a critical subsystem responsible for handling graphical operations and rendering within the Windows operating system. This vulnerability specifically affects how GDI manages memory operations and handles certain graphical objects, creating an information disclosure scenario that could expose sensitive data stored in memory. The flaw manifests when the system processes specific graphical operations that trigger improper memory handling within the GDI subsystem, potentially allowing unauthorized access to data that should remain protected.
This information disclosure vulnerability stems from improper memory management within the Windows GDI component, where the system fails to properly validate or sanitize memory contents during graphical processing operations. The vulnerability is classified as a memory corruption issue that can be exploited to read data from memory locations that should be protected from external access. According to CWE standards, this represents a weakness in the system's memory protection mechanisms, specifically categorized under CWE-200 Information Exposure, where sensitive information is unintentionally disclosed to unauthorized parties. The vulnerability is particularly concerning because GDI is fundamental to Windows graphical operations and is accessed by numerous applications and system components.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can potentially enable attackers to extract sensitive data from system memory. Attackers could leverage this weakness to obtain information such as cryptographic keys, user credentials, application data, or system configuration details that are stored in memory during graphical processing operations. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern across enterprise environments. From an ATT&CK framework perspective, this vulnerability maps to T1005 Data from Local System and T1059 Command and Scripting Interpreter, as it enables adversaries to extract system information and potentially gain further access to the compromised system.
Mitigation strategies should include applying the Microsoft security updates released for this vulnerability, which address the underlying memory handling issues within the GDI component. System administrators should prioritize patch management and ensure all Windows systems are updated with the latest security patches. Network segmentation and monitoring should be implemented to detect potential exploitation attempts, as the vulnerability may be used as a precursor to more sophisticated attacks. Additionally, implementing proper access controls and limiting the scope of graphical operations that can be performed by untrusted applications can help reduce the attack surface. Organizations should also consider implementing memory protection mechanisms such as Data Execution Prevention and Address Space Layout Randomization to make exploitation more difficult and detect potential attacks through memory corruption attempts.