CVE-2024-43596 in Edge
Summary
by MITRE • 10/18/2024
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
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Analysis
by VulDB Data Team • 03/03/2025
This vulnerability represents a critical remote code execution flaw in Microsoft Edge browsers based on the Chromium engine, specifically affecting versions prior to the patched releases. The vulnerability stems from improper handling of certain memory operations within the browser's rendering engine, creating an exploitable condition that could allow attackers to execute arbitrary code on affected systems. The flaw manifests when the browser processes maliciously crafted web content that triggers a memory corruption issue, potentially enabling attackers to bypass modern security mitigations such as address space layout randomization and data execution prevention mechanisms. This type of vulnerability falls under the category of heap-based buffer overflows as defined by CWE-122, where insufficient bounds checking allows memory corruption during dynamic memory allocation operations. The attack surface is particularly concerning as it leverages the browser's widespread use and the trust users place in web content, making it an attractive target for sophisticated threat actors.
The technical exploitation of this vulnerability requires attackers to craft specific web pages that can trigger the memory corruption condition through carefully constructed input data. The flaw typically occurs during the processing of complex web elements such as JavaScript objects, DOM manipulations, or multimedia content that interacts with the browser's underlying memory management systems. Attackers can leverage this vulnerability through various delivery mechanisms including malicious websites, phishing emails with embedded web content, or compromised advertising networks that serve exploit code directly to users. The exploitation process often involves multiple stages where attackers first establish a foothold through initial code execution, then escalate privileges to gain full system control. This aligns with ATT&CK technique T1059.007 for command and scripting interpreter and T1068 for exploit for privilege escalation, demonstrating how such vulnerabilities can be leveraged as part of broader attack chains.
The operational impact of this vulnerability extends beyond individual user compromise to potentially affect enterprise environments where Microsoft Edge is widely deployed across organizational networks. Organizations relying on Edge for business-critical applications face significant risk of data breaches, system compromise, and potential lateral movement within their networks. The vulnerability's remote execution capability means that attackers can exploit it without requiring physical access to target systems, making it particularly dangerous for organizations with limited network segmentation or inadequate endpoint protection. Security teams must consider the potential for zero-day exploitation and the difficulty in detecting such attacks, as they often appear as legitimate browser activity. The widespread adoption of Edge across different operating systems including windows 10 and 11, along with various mobile platforms, amplifies the potential impact of this vulnerability. Organizations should also consider the cascading effects on other Microsoft products and services that may rely on Edge components or share similar architectural vulnerabilities.
Mitigation strategies for this vulnerability should include immediate patch deployment as provided by Microsoft security updates, which typically address the root cause through improved memory management and bounds checking mechanisms. Organizations should implement network-based protections such as web application firewalls and content filtering systems that can detect and block malicious web content before it reaches user browsers. Browser hardening measures including disabling unnecessary browser features, implementing strict content security policies, and using sandboxing technologies can reduce the attack surface and limit potential exploitation impact. Security monitoring should focus on detecting unusual browser behavior, unexpected code execution, and network connections to known malicious domains. Regular security assessments and penetration testing should be conducted to identify potential exploitation vectors and ensure that existing security controls remain effective against evolving attack techniques. Additionally, user education programs should emphasize the importance of avoiding untrusted websites and suspicious email attachments to minimize the risk of successful exploitation through social engineering approaches.