CVE-2020-1086 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows Runtime improperly handles objects in memory, aka 'Windows Runtime Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1077, CVE-2020-1090, CVE-2020-1125, CVE-2020-1139, CVE-2020-1149, CVE-2020-1151, CVE-2020-1155, CVE-2020-1156, CVE-2020-1157, CVE-2020-1158, CVE-2020-1164.
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Analysis
by VulDB Data Team • 10/17/2020
The Windows Runtime elevation of privilege vulnerability identified as CVE-2020-1086 represents a critical security flaw within the Windows operating system's runtime environment that allows attackers to escalate their privileges from standard user level to system level execution. This vulnerability specifically targets the improper handling of objects in memory by the Windows Runtime component, which serves as a foundational framework for Windows applications and system services. The flaw exists in the way the runtime manages memory objects during application execution, creating potential attack vectors that could be exploited by malicious actors to gain unauthorized administrative access to affected systems.
This vulnerability falls under the CWE-264 category of "Permissions, Privileges, and Access Controls" and aligns with the ATT&CK technique T1068 which describes "Exploitation for Privilege Escalation." The technical flaw manifests when Windows Runtime components fail to properly validate or sanitize memory objects during processing, potentially allowing attackers to manipulate memory structures and execute arbitrary code with elevated privileges. The vulnerability is particularly concerning because it operates at a low-level system component that many applications and services depend upon, making it a prime target for exploitation in sophisticated attack campaigns.
The operational impact of CVE-2020-1086 extends beyond simple privilege escalation, as successful exploitation could enable attackers to install malware, modify system files, access sensitive data, and establish persistent backdoors within affected environments. Attackers could leverage this vulnerability to compromise entire networks, especially in enterprise environments where Windows Runtime components are extensively used across various applications and services. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern for organizations relying on these platforms. Organizations that have not applied the relevant security patches may find their systems vulnerable to advanced persistent threats that exploit this memory handling weakness.
Mitigation strategies for CVE-2020-1086 primarily focus on applying the Microsoft security updates released in the February 2020 security bulletin, which address the memory handling issues within the Windows Runtime component. System administrators should prioritize patch deployment across all affected Windows systems, particularly those running server environments or handling sensitive data. Additional defensive measures include implementing network segmentation to limit lateral movement, monitoring for suspicious privilege escalation activities, and maintaining up-to-date endpoint protection solutions that can detect anomalous behavior associated with privilege escalation attempts. The vulnerability demonstrates the importance of proper memory management and object validation in system-level components, highlighting the need for robust security testing and code review processes that can identify similar flaws before they can be exploited by malicious actors. Organizations should also consider implementing principle of least privilege configurations and regular security assessments to minimize the potential impact of such vulnerabilities in their environments.