CVE-2020-0633 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists in the way that the Windows Search Indexer handles objects in memory, aka 'Windows Search Indexer Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-0613, CVE-2020-0614, CVE-2020-0623, CVE-2020-0625, CVE-2020-0626, CVE-2020-0627, CVE-2020-0628, CVE-2020-0629, CVE-2020-0630, CVE-2020-0631, CVE-2020-0632.
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Analysis
by VulDB Data Team • 03/21/2024
The Windows Search Indexer elevation of privilege vulnerability represents a critical security flaw that allows attackers to escalate their privileges within Windows operating systems. This vulnerability specifically affects the Windows Search service component responsible for indexing files and content to enable fast search capabilities across the system. The flaw exists in how the indexer processes objects in memory, creating an opportunity for malicious actors to execute arbitrary code with elevated privileges. The vulnerability impacts multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it a widespread concern for enterprise environments. The issue stems from improper memory handling within the search indexing mechanism, which can be exploited through carefully crafted input that triggers memory corruption during indexing operations.
The technical nature of this vulnerability involves memory management flaws that occur when the Windows Search Indexer processes certain file types or content structures. Attackers can manipulate the indexer by creating or modifying files that contain specific patterns or metadata which, when processed by the search service, cause memory corruption. This memory corruption can then be leveraged to execute malicious code with system-level privileges, bypassing standard security controls and access restrictions. The vulnerability operates at the kernel level, meaning that successful exploitation can result in complete system compromise. The flaw typically manifests when the indexer encounters specially crafted files or content that triggers buffer overflows, use-after-free conditions, or other memory-related issues during the indexing process. This type of vulnerability is classified under CWE-121 as a buffer overflow condition, and can be categorized under ATT&CK technique T1068 for locally executed malicious code.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can enable attackers to gain unauthorized access to sensitive system resources and data. Once exploited, attackers can potentially modify system files, install backdoors, access confidential information, or establish persistent access to compromised systems. The vulnerability is particularly dangerous because it can be exploited remotely through network-based attacks or locally through social engineering techniques that trick users into opening malicious files. Organizations running affected Windows versions face significant risk of data breaches, system compromise, and potential lateral movement within their networks. The vulnerability's exploitation requires minimal user interaction in many cases, making it an attractive target for automated attack campaigns. Security teams must consider the implications of this vulnerability in their risk assessments and incident response procedures, as it can lead to complete system takeovers and data exfiltration.
Mitigation strategies for this vulnerability should include immediate deployment of Microsoft security patches and updates, which address the memory handling flaws in the Windows Search service. System administrators should implement the principle of least privilege, limiting user access rights and reducing the potential impact of successful exploitation. Network segmentation and monitoring solutions can help detect anomalous search indexing activities that might indicate exploitation attempts. Disabling the Windows Search service or restricting its functionality in high-security environments can serve as temporary workarounds while permanent patches are deployed. Regular security assessments and vulnerability scanning should include checks for the presence of this vulnerability, particularly in environments where search indexing is enabled. Organizations should also implement behavioral monitoring to detect unusual patterns in search service operations that could indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches and implementing comprehensive security monitoring solutions to protect against sophisticated attacks targeting system services.