CVE-2020-1306 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-2020-1304, CVE-2020-1334.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 10/23/2020
The Windows Runtime Elevation of Privilege Vulnerability identified as CVE-2020-1306 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 administrative access. This vulnerability specifically manifests when the Windows Runtime component fails to properly handle objects in memory, creating exploitable conditions that bypass normal security boundaries. The flaw exists within the core Windows Runtime infrastructure that manages application execution and system interactions, making it particularly dangerous as it affects fundamental operating system processes rather than isolated applications.
This vulnerability falls under the CWE-264 category of "Permissions, Privileges, and Access Controls" and aligns with ATT&CK technique T1068 which focuses on "Exploitation for Privilege Escalation." The technical implementation involves improper memory management where Windows Runtime objects are not correctly validated or sanitized before processing, allowing attackers to manipulate memory structures to gain elevated privileges. The flaw typically occurs during the execution of Windows Runtime components that handle inter-process communication, object marshaling, or memory allocation operations. Attackers can leverage this vulnerability through carefully crafted malicious applications or by exploiting other initial access vectors to execute code with system-level privileges.
The operational impact of CVE-2020-1306 extends beyond simple privilege escalation as it enables attackers to gain full control over affected systems, potentially leading to complete system compromise, data exfiltration, and persistent backdoor establishment. Organizations running vulnerable Windows systems face significant risk of unauthorized access, especially in environments where users have standard accounts but require elevated privileges for legitimate business operations. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly widespread across enterprise environments. Security researchers have noted that this vulnerability can be exploited in both local and remote attack scenarios, with the potential for zero-day exploitation given its memory corruption nature.
Mitigation strategies for CVE-2020-1306 primarily involve applying Microsoft's security patches and updates released through Windows Update mechanisms, specifically the patches addressing the Windows Runtime memory handling issues. Organizations should prioritize immediate deployment of these patches across all affected systems, particularly those running vulnerable Windows versions. Additional defensive measures include implementing strict application whitelisting policies, enabling Windows Defender Application Control, and monitoring for suspicious privilege escalation attempts in system logs. Network segmentation and least-privilege access controls can help limit the potential impact if exploitation occurs, while regular security assessments and vulnerability scanning should be conducted to identify any remaining unpatched systems. The vulnerability also underscores the importance of maintaining up-to-date security practices and following Microsoft's security guidance for Windows Runtime component management, as this type of memory handling flaw represents a persistent challenge in modern operating system security architectures.