CVE-2017-0200 in Edge
Summary
by MITRE
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory. The vulnerability could corrupt memory in such a way that enables an attacker to execute arbitrary code in the context of the current user, aka "Microsoft Edge Memory Corruption Vulnerability."
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 11/28/2022
The vulnerability identified as CVE-2017-0200 represents a critical memory corruption flaw within Microsoft Edge browser that enables remote code execution attacks. This vulnerability specifically affects how the browser handles object memory management during web page rendering processes, creating a pathway for malicious actors to exploit memory corruption issues that can lead to arbitrary code execution. The flaw resides in the browser's handling of memory objects, particularly when processing certain web content that triggers improper memory access patterns. Security researchers have classified this as a remote code execution vulnerability because attackers can leverage it through web-based attacks without requiring local system access, making it particularly dangerous for widespread exploitation.
The technical nature of this vulnerability stems from improper memory access controls within Edge's JavaScript engine and memory management subsystem. When processing certain web content, the browser fails to properly validate object references, leading to memory corruption that can be manipulated by attackers to overwrite critical memory locations. This type of vulnerability falls under the CWE-121 category of stack-based buffer overflow, though it specifically manifests as a memory corruption issue that can be exploited through heap manipulation techniques. The vulnerability operates by causing the browser to access memory locations outside of allocated boundaries, potentially allowing attackers to inject and execute malicious code with the privileges of the currently logged-in user.
The operational impact of CVE-2017-0200 is severe and far-reaching, as it enables attackers to execute arbitrary code on vulnerable systems without user interaction. Once exploited, the vulnerability allows attackers to gain full control over the affected system, potentially leading to data theft, system compromise, or further network infiltration. The attack surface is extensive since the vulnerability can be triggered through web browsing activities, making it particularly dangerous in enterprise environments where users frequently access untrusted websites. This vulnerability aligns with ATT&CK technique T1059.001 for command and script interpreter, as successful exploitation would enable attackers to execute commands and scripts on compromised systems, while also mapping to T1068 for exploit for privilege escalation.
Mitigation strategies for CVE-2017-0200 primarily involve immediate patch deployment through Microsoft's security updates, as the vendor released comprehensive fixes for this vulnerability in their regular security updates. Organizations should implement network segmentation to limit exposure and deploy web application firewalls to filter potentially malicious web content. Browser hardening measures including disabling unnecessary features, implementing strict content security policies, and using sandboxing techniques can provide additional defense layers. Security monitoring should focus on detecting unusual memory access patterns and unexpected code execution events, while user education regarding safe browsing practices remains essential for reducing exploitation risks. The vulnerability demonstrates the importance of memory safety in browser security and highlights the need for comprehensive security testing of memory management systems in web browsers, particularly in relation to the principles outlined in the OWASP Top Ten security risks for web applications.