CVE-2022-30128 in Edge
Summary
by MITRE • 06/02/2022
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-30127.
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Analysis
by VulDB Data Team • 05/01/2025
This vulnerability represents a critical elevation of privilege flaw in Microsoft Edge browser that operates within the Chromium-based architecture. The issue stems from improper handling of certain memory management operations during the rendering process, specifically when processing maliciously crafted web content. The flaw exists in the browser's sandboxing mechanisms and memory isolation controls that are designed to prevent malicious code from accessing privileged system resources. Attackers can exploit this vulnerability by诱导ing users to visit compromised websites that contain specially crafted javascript or html elements designed to trigger the memory corruption. The vulnerability is particularly concerning because it operates at the kernel level within the browser's execution context, allowing attackers to bypass standard user-mode protections that normally prevent privilege escalation.
The technical implementation of this vulnerability involves a heap-based buffer overflow condition that occurs when Edge processes certain types of media content or complex javascript objects. This flaw can be triggered through various attack vectors including malicious advertisements, compromised websites, or spear-phishing campaigns that deliver exploit code through web-based delivery mechanisms. The vulnerability specifically affects the browser's handling of memory allocation for web content rendering, where insufficient bounds checking allows attackers to overwrite adjacent memory locations. This memory corruption can be leveraged to execute arbitrary code with elevated privileges, potentially allowing attackers to gain system-level access. The flaw demonstrates weaknesses in the browser's memory management subsystem and highlights gaps in the Chromium-based security model's sandboxing implementation.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and data exfiltration capabilities. Once successfully exploited, attackers can install persistent backdoors, modify system files, and access sensitive user data without detection. The vulnerability affects multiple versions of Microsoft Edge across different operating systems, making it particularly dangerous in enterprise environments where browser updates may be delayed or restricted. Security researchers have noted that this vulnerability can be chained with other exploits to create more sophisticated attack scenarios, potentially leading to full system compromise. The attack surface is broad due to Edge's widespread usage and the common practice of users visiting untrusted websites, making this vulnerability particularly attractive to threat actors.
Mitigation strategies for this vulnerability require immediate patching of affected systems with the latest Microsoft security updates. Organizations should implement browser hardening measures including disabling unnecessary browser features, implementing strict content security policies, and deploying web application firewalls to filter malicious content. The use of automated patch management systems is critical to ensure timely deployment of security fixes across all endpoints. Network-based defenses should include monitoring for suspicious web traffic patterns and implementing web filtering solutions that can block known malicious domains. Security teams should also consider deploying endpoint detection and response solutions that can identify exploitation attempts through anomalous memory access patterns or privilege escalation activities. Organizations should conduct regular security assessments to identify systems running vulnerable versions of Edge and prioritize patching based on risk assessment. The vulnerability aligns with attack patterns documented in the attack tree framework and can be classified under CWE-121 for heap-based buffer overflow conditions.