CVE-2020-0714 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when DirectX improperly handles objects in memory, aka 'DirectX Information Disclosure Vulnerability'.
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Analysis
by VulDB Data Team • 03/29/2024
The vulnerability identified as CVE-2020-0714 represents a critical information disclosure flaw within the DirectX graphics subsystem of Microsoft Windows operating systems. This weakness specifically manifests when DirectX components fail to properly manage memory objects, creating potential pathways for unauthorized data access and system information exposure. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly concerning given the widespread adoption of these platforms across enterprise environments. The issue stems from improper validation and handling of memory objects within the DirectX rendering pipeline, which is fundamental to graphics processing and multimedia applications on Windows platforms.
The technical root cause of this vulnerability lies in the improper memory management practices within DirectX's object handling mechanisms. When DirectX processes graphics objects and memory allocations, it fails to adequately validate the integrity of memory structures, allowing for potential information leakage through memory corruption or improper object disposal. This flaw falls under the CWE-20 category of "Improper Input Validation" and specifically relates to CWE-125 "Out-of-bounds Read" and CWE-215 "Information Disclosure" as referenced in the Common Weakness Enumeration catalog. The vulnerability enables attackers to potentially read sensitive data from memory locations that should remain protected, including potentially exposing kernel-mode memory contents or application-specific data that should not be accessible to user-mode processes.
From an operational impact perspective, this information disclosure vulnerability poses significant risks to system security and data confidentiality. Attackers could leverage this weakness to extract sensitive information such as cryptographic keys, credentials, or application data that may be stored in memory during graphics processing operations. The vulnerability's exploitation potential is enhanced by the fact that DirectX is deeply integrated into Windows operating systems and is frequently used by legitimate applications, making it difficult to distinguish between benign and malicious memory access patterns. This creates opportunities for attackers to perform reconnaissance and gather intelligence about system configurations, running processes, and potentially sensitive data that could be used in subsequent attacks. The vulnerability aligns with ATT&CK technique T1059.001 "Command and Scripting Interpreter: PowerShell" and T1003.001 "OS Credential Dumping: LSASS Memory" when combined with other exploitation techniques.
Mitigation strategies for CVE-2020-0714 should focus on both immediate patch deployment and operational security enhancements. Microsoft has released security updates through the regular monthly patch cycle, and organizations should prioritize applying these patches to all affected systems. Additionally, implementing memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) can help reduce the exploitability of this vulnerability. Network segmentation and application whitelisting can limit the potential impact of successful exploitation attempts. Organizations should also consider monitoring for unusual memory access patterns and implementing intrusion detection systems that can identify potential exploitation attempts targeting DirectX components. Regular security assessments and vulnerability scanning should include checks for this specific vulnerability, particularly in environments where graphics-intensive applications are prevalent. The vulnerability demonstrates the importance of secure memory management practices and proper input validation in system-level components, highlighting the need for comprehensive security testing throughout the software development lifecycle.