CVE-2020-1237 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-2020-0986, CVE-2020-1246, CVE-2020-1262, CVE-2020-1264, CVE-2020-1266, CVE-2020-1269, CVE-2020-1273, CVE-2020-1274, CVE-2020-1275, CVE-2020-1276, CVE-2020-1307, CVE-2020-1316.
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Analysis
by VulDB Data Team • 10/23/2020
The vulnerability described in CVE-2020-1237 represents a critical elevation of privilege flaw within the Windows kernel component that enables attackers to escalate their privileges from standard user level to SYSTEM level access. This vulnerability specifically manifests in how the Windows kernel manages memory objects, creating an exploitable condition that allows malicious actors to bypass security controls and gain unauthorized administrative access to affected systems. The flaw exists at the core operating system level, making it particularly dangerous as it can be leveraged to establish persistent backdoors and execute arbitrary code with the highest possible privileges.
The technical implementation of this vulnerability stems from improper handling of kernel objects in memory management structures. When the Windows kernel processes certain memory operations, it fails to properly validate or sanitize object references, creating opportunities for attackers to manipulate kernel data structures. This memory handling issue typically involves race conditions or improper access control mechanisms that allow unprivileged users to craft malicious inputs or exploit existing kernel objects to achieve privilege escalation. The vulnerability aligns with CWE-264, which categorizes permissions, privileges, and access control issues, and specifically relates to improper handling of kernel objects within the Windows operating system kernel space.
From an operational impact perspective, this vulnerability poses severe risks to enterprise environments as it enables attackers to gain complete system control without requiring physical access or sophisticated exploitation techniques. Once exploited, an attacker can establish persistent access, modify system files, install malware, and potentially compromise entire network infrastructures. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly widespread across corporate environments. Security teams must consider this vulnerability as a critical threat requiring immediate attention, as it can be exploited through various attack vectors including phishing, drive-by downloads, or compromised applications.
Mitigation strategies for CVE-2020-1237 should include immediate deployment of Microsoft security patches and updates, which address the underlying kernel memory handling issues. Organizations should implement comprehensive monitoring solutions to detect unusual privilege escalation attempts and ensure that all systems are kept up to date with the latest security patches. Network segmentation and principle of least privilege access controls can help limit the potential impact if exploitation occurs. Additionally, security professionals should consider implementing exploit prevention measures such as control flow integrity checks and address space layout randomization to make exploitation more difficult. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches and highlights the need for continuous security monitoring to detect and respond to such kernel-level threats effectively.