CVE-2020-1188 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows State Repository Service improperly handles objects in memory, aka 'Windows State Repository Service Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1124, CVE-2020-1131, CVE-2020-1134, CVE-2020-1144, CVE-2020-1184, CVE-2020-1185, CVE-2020-1186, CVE-2020-1187, CVE-2020-1189, CVE-2020-1190, CVE-2020-1191.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/17/2020
The vulnerability identified as CVE-2020-1188 represents a critical elevation of privilege flaw within the Windows State Repository Service component of Microsoft operating systems. This service is responsible for managing and maintaining the state information of various Windows components, particularly those related to the Windows Update mechanism and system configuration management. The flaw manifests when the service improperly handles objects stored in memory, creating an opportunity for malicious actors to escalate their privileges from standard user level to SYSTEM level access. This vulnerability specifically affects Windows 10 versions 1903 and 1909, as well as Windows Server 2019 and Windows Server 2016, making it a widespread concern across enterprise and consumer environments.
The technical root cause of this vulnerability lies in inadequate memory management practices within the Windows State Repository Service. When the service processes certain objects in memory, it fails to properly validate or sanitize the data structures being manipulated, allowing for potential memory corruption or object manipulation attacks. This flaw aligns with CWE-121, which describes heap-based buffer overflow conditions, and CWE-125, which covers out-of-bounds read vulnerabilities. The vulnerability can be exploited through a carefully crafted payload that leverages the service's memory handling mechanisms to execute arbitrary code with elevated privileges. Attackers can potentially leverage this weakness to gain full control over affected systems, as the service typically runs with high privilege levels necessary for system management operations.
The operational impact of CVE-2020-1188 extends beyond simple privilege escalation, as it provides attackers with a persistent foothold in compromised environments. Once an attacker achieves SYSTEM-level access through this vulnerability, they can perform actions such as installing malicious software, modifying system files, creating new user accounts, and accessing sensitive data without detection. The vulnerability's exploitation requires local access to the target system, making it particularly dangerous in environments where physical access or initial compromise has been achieved through other attack vectors. This weakness can be chained with other vulnerabilities to create more sophisticated attack scenarios, and it aligns with ATT&CK technique T1068, which covers 'Local Privilege Escalation', and T1547, which covers 'Registry Run Keys / Startup Folder'. The service's role in Windows Update processes means that exploitation could potentially disrupt system updates and patch management processes, further complicating remediation efforts.
Microsoft addressed this vulnerability through the release of security updates in their regular monthly patch cycle, specifically targeting the Windows State Repository Service memory handling flaws. Organizations should prioritize applying these patches immediately, as the vulnerability has been actively exploited in the wild. The mitigation strategy involves not only installing the appropriate security updates but also implementing network segmentation and access controls to limit potential attack surfaces. Security professionals should monitor for suspicious activities related to the Windows State Repository Service and implement endpoint detection and response solutions that can identify anomalous behavior patterns associated with privilege escalation attempts. Additionally, regular security assessments should be conducted to identify any potential exploitation attempts or misconfigurations that could amplify the impact of this vulnerability. The vulnerability serves as a reminder of the critical importance of proper memory management in system services and the potential consequences when such safeguards are inadequate.