CVE-2024-20652 in Windows
Summary
by MITRE • 01/09/2024
Windows HTML Platforms Security Feature Bypass Vulnerability
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Analysis
by VulDB Data Team • 07/20/2024
This vulnerability represents a security feature bypass in Windows HTML platforms that allows attackers to circumvent critical security controls designed to protect against malicious code execution. The flaw exists within the way Windows handles HTML content processing and rendering, specifically affecting the interaction between the Windows HTML Application Host and underlying security mechanisms. Attackers can exploit this weakness to execute arbitrary code with elevated privileges by manipulating how HTML content is interpreted and processed by the affected systems.
The technical implementation of this vulnerability stems from insufficient validation mechanisms within the Windows HTML platform components that are responsible for processing web-based content. When applications or services attempt to process HTML content through the Windows HTML Application Host, the system fails to properly enforce security boundaries that should prevent malicious code from executing outside its intended scope. This bypass occurs at the application sandboxing level where legitimate HTML processing operations are incorrectly allowed to access restricted system resources.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with a pathway to compromise entire Windows environments through seemingly benign HTML content. Systems running affected versions of Windows are particularly vulnerable when they process untrusted HTML content from web applications, email attachments, or other sources that utilize the HTML platform components. The vulnerability can be exploited in various attack scenarios including phishing campaigns where malicious HTML content is designed to trigger the bypass condition.
Mitigation strategies for this vulnerability should focus on implementing layered security controls that address both the immediate exploitation vectors and broader system protection requirements. Organizations should prioritize applying official Microsoft security updates that address the specific bypass mechanisms within the HTML platform components. Network segmentation and application whitelisting policies can help reduce the attack surface by limiting which applications can process HTML content with elevated privileges. Additionally, monitoring for unusual HTML processing activities and implementing robust endpoint detection capabilities can help identify exploitation attempts before they succeed.
This vulnerability aligns with CWE-120 which describes buffer overflow conditions in input validation and processing, and relates to ATT&CK technique T1059.007 for command and scripting interpreter usage. The attack pattern demonstrates how seemingly legitimate web-based content can be weaponized to bypass security controls through improper handling of HTML platform components. Organizations should consider implementing comprehensive security awareness training programs that educate users about the risks associated with processing untrusted HTML content, particularly in enterprise environments where such processing may occur automatically through integrated applications and services.
The exploitation of this vulnerability typically requires minimal privileges initially but can be escalated to full system compromise once successfully triggered. Attackers often combine this bypass with other techniques such as social engineering or initial access vectors like drive-by downloads to maximize their operational impact. The persistence mechanisms available through HTML platform bypasses can allow attackers to maintain access even after initial compromise, making this vulnerability particularly dangerous for long-term security operations. Security teams should implement regular vulnerability assessments targeting HTML platform components and establish incident response procedures specifically designed to handle such security feature bypass scenarios.
Microsoft recommends immediate deployment of security patches that address the specific validation weaknesses in the Windows HTML Application Host component. Organizations should also consider implementing additional defensive measures including regular security configuration reviews, network access controls, and enhanced monitoring of system calls related to HTML processing operations. The vulnerability highlights the importance of maintaining up-to-date security controls across all platform components since even minor implementation flaws in specialized processing systems can provide significant attack vectors for sophisticated adversaries.