CVE-2017-8757 in Edge
Summary
by MITRE
Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to the way Microsoft Edge handles objects in memory, aka "Microsoft Edge Remote Code Execution Vulnerability".
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Analysis
by VulDB Data Team • 08/22/2024
The vulnerability described in CVE-2017-8757 represents a critical remote code execution flaw in Microsoft Edge browser that affects multiple Windows operating system versions including Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016. This vulnerability falls under the category of memory corruption issues that arise from improper handling of objects within the browser's memory management system. The flaw enables attackers to execute arbitrary code with the privileges of the currently logged-in user, potentially leading to complete system compromise. According to CWE-119, this vulnerability stems from inadequate bounds checking and memory handling mechanisms that allow attackers to manipulate memory objects beyond their intended boundaries.
The technical implementation of this vulnerability occurs when Microsoft Edge processes certain web content that triggers improper memory management behavior. Attackers can craft malicious web pages that exploit the browser's object handling mechanisms to overwrite memory locations or execute unintended code sequences. This type of vulnerability is particularly dangerous because it operates within the browser's security context, allowing attackers to bypass traditional security boundaries that typically separate user applications from system-level operations. The vulnerability aligns with ATT&CK technique T1059.001 which involves the use of command and scripting interpreters, as attackers can leverage this flaw to execute malicious payloads directly within the browser environment.
The operational impact of CVE-2017-8757 extends beyond simple code execution, as it provides attackers with a pathway to establish persistent access to affected systems. Once exploited, the vulnerability enables attackers to install malware, steal sensitive data, or create backdoors that persist across system reboots. The attack surface is particularly broad since Microsoft Edge is the default browser on Windows systems, making it a prime target for widespread exploitation. Organizations running affected Windows versions face significant risk of data breaches and system compromise, especially in environments where users frequently access untrusted web content. The vulnerability's exploitation requires minimal user interaction, often only visiting a malicious website, which makes it particularly effective for drive-by attack scenarios.
Mitigation strategies for CVE-2017-8757 should prioritize immediate patch deployment through Microsoft's security updates, as the vulnerability has been addressed in subsequent Windows updates. System administrators should implement browser hardening measures including disabling unnecessary browser features, implementing strict content security policies, and deploying sandboxing mechanisms to limit the impact of potential exploitation. Network-level defenses such as web application firewalls and intrusion detection systems can help identify and block exploitation attempts. Additionally, user education regarding safe browsing practices and the importance of keeping systems updated remains crucial. Organizations should also consider implementing automated patch management solutions to ensure timely deployment of security updates across all affected systems. The vulnerability demonstrates the importance of continuous security monitoring and the need for organizations to maintain up-to-date security postures to defend against evolving threats.