CVE-2019-0565 in Edge
Summary
by MITRE
A remote code execution vulnerability exists when Microsoft Edge improperly accesses objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability." This affects Microsoft Edge.
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Analysis
by VulDB Data Team • 04/26/2020
The vulnerability identified as CVE-2019-0565 represents a critical memory corruption flaw within Microsoft Edge browser that enables remote code execution under specific conditions. This vulnerability stems from improper handling of memory objects during browser operations, creating a pathway for malicious actors to execute arbitrary code on affected systems. The flaw specifically impacts the rendering engine and memory management components of Microsoft Edge, making it particularly dangerous given the browser's widespread usage and privileged access to system resources.
The technical implementation of this vulnerability involves a memory corruption issue that occurs when Edge processes certain web content or interacts with malformed data structures in memory. According to CWE-125, this corresponds to an "Out-of-bounds Read" condition where the browser attempts to access memory locations beyond the intended boundaries. The flaw allows attackers to manipulate memory pointers and object references in ways that can lead to code execution, potentially enabling full system compromise. This type of vulnerability falls under the ATT&CK framework's technique T1059.001 for Command and Scripting Interpreter, as successful exploitation could allow attackers to execute malicious commands with the privileges of the Edge process.
The operational impact of CVE-2019-0565 extends beyond simple browser exploitation, as it represents a privilege escalation vector that could enable attackers to gain unauthorized access to user systems. When exploited, this vulnerability could allow remote attackers to install malware, steal sensitive data, or establish persistent access to compromised systems. The vulnerability's remote nature means that attackers can leverage it through malicious websites or web-based attacks without requiring physical access to target systems. Organizations running Microsoft Edge are particularly at risk since the browser's default behavior often involves automatic loading of web content, making exploitation relatively straightforward for threat actors.
Mitigation strategies for this vulnerability should prioritize immediate patch deployment as provided by Microsoft through regular security updates. System administrators should implement browser hardening measures including restricted browsing environments, content filtering, and sandboxing technologies to limit potential damage from successful exploitation attempts. Network security controls such as web application firewalls and deep packet inspection can help detect and block malicious web traffic targeting this specific vulnerability. Additionally, user education regarding safe browsing practices and the importance of keeping software updated remains crucial in defending against exploitation attempts. Organizations should also consider implementing endpoint detection and response solutions to monitor for suspicious memory access patterns or code execution behaviors that might indicate exploitation attempts. The vulnerability's classification as a memory corruption issue aligns with ATT&CK technique T1068 for Exploitation for Privilege Escalation, highlighting the need for comprehensive defensive measures across multiple security layers.