CVE-2020-1087 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka 'Windows Kernel Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1114.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 10/17/2020
The Windows Kernel Elevation of Privilege Vulnerability identified as CVE-2020-1087 represents a critical security flaw within the core operating system components that govern memory management and object handling. This vulnerability specifically targets the kernel mode execution environment where system-level processes operate with the highest privileges, making it particularly dangerous for attackers seeking to escalate their access rights. The flaw manifests in how the Windows kernel processes and manages memory objects, creating potential pathways for malicious actors to gain unauthorized administrative access to affected systems.
The technical root cause of this vulnerability lies in improper handling of memory objects within kernel space, which allows for potential memory corruption and arbitrary code execution. Attackers can exploit this weakness by crafting malicious payloads that manipulate kernel memory structures, potentially leading to privilege escalation from standard user accounts to SYSTEM level access. The vulnerability stems from inadequate validation and sanitization of memory object references, creating opportunities for attackers to manipulate kernel data structures and execute code with elevated privileges. This type of flaw typically falls under CWE-121 which describes 'Stack-based Buffer Overflow' or related memory corruption categories, though the specific implementation in this case involves kernel-level memory management.
The operational impact of CVE-2020-1087 extends far beyond simple privilege escalation, as successful exploitation can lead to complete system compromise and persistent access. Organizations running affected Windows versions become vulnerable to sophisticated attacks where threat actors can establish backdoors, exfiltrate sensitive data, or deploy additional malware without detection. The vulnerability affects multiple Windows operating systems including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly concerning for enterprise environments where these systems are prevalent. Attackers leveraging this vulnerability can potentially bypass traditional security controls and maintain long-term access to compromised systems.
Mitigation strategies for this vulnerability primarily focus on timely patch deployment and system hardening measures. Microsoft released security updates in October 2020 that address the underlying kernel memory handling issues, making immediate patching essential for all affected systems. Organizations should implement comprehensive vulnerability management processes that include regular security assessments and monitoring for exploitation attempts. Additional defensive measures include enabling kernel address space layout randomization, implementing strict access controls, and monitoring for anomalous kernel activity that might indicate exploitation attempts. From an ATT&CK framework perspective, this vulnerability maps to T1068 which describes 'Exploitation for Privilege Escalation' and T1547 which covers 'Boot or Logon Autostart Execution' as attackers may establish persistence post-exploitation. Network segmentation and privileged access management controls can help limit the potential damage from successful exploitation attempts.