CVE-2020-1304 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-2020-1231, CVE-2020-1233, CVE-2020-1235, CVE-2020-1265, CVE-2020-1282, CVE-2020-1306, CVE-2020-1334.
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Analysis
by VulDB Data Team • 10/23/2020
The Windows Runtime elevation of privilege vulnerability identified as CVE-2020-1304 represents a critical security flaw within the Windows operating system's runtime environment that allows malicious actors to escalate their privileges from standard user level to SYSTEM level access. This vulnerability specifically manifests when the Windows Runtime component fails to properly handle objects in memory, creating an exploitable condition that bypasses normal security boundaries. The issue affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern for enterprise environments. The vulnerability is categorized under CWE-264, which deals with permissions, privileges, and access controls, specifically addressing improper handling of memory objects that should maintain strict security boundaries.
The technical exploitation of this vulnerability occurs through manipulation of memory objects within the Windows Runtime environment where insufficient validation and proper memory management allows an attacker to craft malicious inputs that can trigger unauthorized privilege escalation. When Windows Runtime processes these malformed objects, it fails to properly validate the memory access patterns, potentially allowing arbitrary code execution with elevated privileges. The flaw typically involves improper validation of object references or memory pointers that should be restricted to specific privilege levels. Attackers can leverage this weakness by creating specially crafted applications or scripts that exploit the memory handling inconsistency, ultimately enabling them to execute code with SYSTEM-level privileges.
The operational impact of CVE-2020-1304 extends beyond simple privilege escalation, as it provides attackers with the foundation for extensive system compromise and lateral movement within networks. Once an attacker achieves SYSTEM-level access through this vulnerability, they can manipulate system files, install persistent backdoors, access sensitive data, and potentially establish footholds for further attacks. The vulnerability's exploitation aligns with ATT&CK technique T1068, which covers 'Local Port Configuration' and privilege escalation methods, and T1548.002, which addresses 'Account Manipulation: Valid Accounts'. Organizations running affected Windows versions face significant risk of data breaches, system compromise, and potential full network infiltration, particularly in environments where users have the ability to run applications or scripts.
Mitigation strategies for CVE-2020-1304 primarily involve applying Microsoft's security patches and updates, specifically the patches released in the May 2020 security updates. System administrators should prioritize immediate deployment of these patches across all affected systems and implement additional security controls such as enabling Windows Defender Application Control, restricting user privileges, and monitoring for anomalous system behavior. The vulnerability's exploitation typically requires user interaction or system compromise, making user education and awareness programs essential components of the overall security posture. Network segmentation and monitoring solutions should be deployed to detect suspicious activities that may indicate exploitation attempts, while regular security assessments should verify that systems remain protected against this and similar vulnerabilities. Organizations should also consider implementing least privilege principles and regularly reviewing access controls to minimize potential impact if exploitation occurs.