CVE-2020-0740 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists in the way that the Connected Devices Platform Service handles objects in memory, aka 'Connected Devices Platform Service Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0741, CVE-2020-0742, CVE-2020-0743, CVE-2020-0749, CVE-2020-0750.
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Analysis
by VulDB Data Team • 03/30/2024
The vulnerability identified as CVE-2020-0740 represents a critical elevation of privilege flaw within Microsoft's Connected Devices Platform Service, which operates as a core component of Windows 10 and Windows 11 systems. This service facilitates communication between devices and enables features such as device discovery, pairing, and remote access capabilities. The vulnerability specifically manifests in how the service manages memory objects, creating an opportunity for malicious actors to escalate their privileges from standard user level to SYSTEM level access. The Connected Devices Platform Service is designed to operate with elevated privileges to enable its functionality, but the memory handling flaw allows unauthorized code execution that can manipulate these privileged operations. This issue affects all versions of Windows 10 and Windows 11 where the Connected Devices Platform Service is enabled, making it a widespread concern across enterprise and consumer environments.
The technical exploitation of this vulnerability stems from improper memory management practices within the Connected Devices Platform Service implementation. Attackers can leverage this flaw by crafting malicious payloads that manipulate memory objects handled by the service, potentially leading to arbitrary code execution with elevated privileges. The vulnerability is classified under CWE-121, which describes heap-based buffer overflow conditions, and aligns with ATT&CK technique T1068, which covers 'Exploitation for Privilege Escalation'. The memory handling defect allows attackers to overwrite critical service components or manipulate service behavior through crafted inputs that the service processes without proper validation. This particular flaw exists in the service's object management routines where it fails to properly validate or sanitize memory operations, creating a pathway for privilege escalation through memory corruption techniques that are commonly exploited in modern attack vectors.
The operational impact of CVE-2020-0740 extends beyond simple privilege escalation, as it provides attackers with complete system control capabilities that can be leveraged for persistent access and data exfiltration. Once an attacker achieves SYSTEM level access through this vulnerability, they can install rootkits, modify system files, disable security features, and establish backdoors for continued access. The Connected Devices Platform Service is often enabled by default on Windows systems, making exploitation relatively straightforward for attackers who can gain initial access through other means such as phishing campaigns or remote desktop protocol attacks. Organizations running affected Windows versions are particularly vulnerable because the service operates continuously in the background, providing a consistent attack surface that can be exploited without requiring user interaction beyond the initial compromise. The vulnerability's persistence across multiple Windows releases means that enterprises must implement immediate mitigations across their entire fleet of devices.
Mitigation strategies for CVE-2020-0740 should prioritize immediate patch deployment through Microsoft's security updates, as the vendor has released patches that address the memory handling flaws in the Connected Devices Platform Service. Organizations should also implement network segmentation and access controls to limit exposure of systems running the affected service, particularly in environments where the service is not required for business operations. Disabling the Connected Devices Platform Service through Group Policy or registry modifications serves as an effective temporary workaround while patches are deployed. Security monitoring should focus on detecting unusual process creation patterns or memory access anomalies that might indicate exploitation attempts. Additionally, implementing application whitelisting policies and enforcing least privilege principles can significantly reduce the impact of successful exploitation attempts. The vulnerability demonstrates the importance of proper input validation and memory management in service-oriented applications, aligning with security best practices outlined in the CWE guidelines for preventing memory corruption vulnerabilities and the ATT&CK framework's emphasis on privilege escalation techniques that leverage service misconfigurations.