CVE-2018-8301 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. This CVE ID is unique from CVE-2018-8125, CVE-2018-8262, CVE-2018-8274, CVE-2018-8275, CVE-2018-8279.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/05/2023
The vulnerability identified as CVE-2018-8301 represents a critical memory corruption issue within Microsoft Edge browser that enables remote code execution attacks. This flaw specifically manifests when the browser's rendering engine fails to properly validate object references in memory, creating opportunities for malicious actors to exploit memory access patterns and execute arbitrary code on affected systems. The vulnerability resides in the browser's handling of memory objects during web page rendering processes, where improper memory management allows attackers to manipulate memory contents and gain unauthorized execution privileges.
The technical implementation of this vulnerability stems from insufficient bounds checking and memory validation mechanisms within Edge's JavaScript engine and rendering components. When processing certain web content, the browser's memory management system fails to properly verify object boundaries and memory access permissions, leading to potential buffer overflows or memory corruption scenarios. This memory corruption can be leveraged by attackers to overwrite critical memory locations and redirect execution flow to malicious payloads. The flaw is particularly dangerous because it operates at the memory level, allowing attackers to bypass traditional security controls that operate at higher protocol or application layers.
From an operational perspective, this vulnerability presents significant risks to enterprise environments where Microsoft Edge is the default browser or widely deployed across user workstations. Attackers can exploit this vulnerability through malicious websites, phishing emails containing crafted web content, or compromised web applications that deliver malicious payloads. The remote execution capability means that exploitation can occur without user interaction beyond visiting a compromised website, making it particularly dangerous for targeted attacks. Organizations may experience unauthorized access to sensitive data, system compromise, and potential lateral movement within network environments once initial exploitation succeeds.
Security professionals should implement multiple layers of defense to mitigate this vulnerability effectively. Immediate patching of affected Microsoft Edge versions represents the primary mitigation strategy, as Microsoft released security updates specifically addressing this memory corruption flaw. Network segmentation and web filtering solutions can provide additional protection by blocking access to known malicious domains and content. Browser hardening measures including disabling unnecessary features, implementing strict content security policies, and deploying sandboxing mechanisms can reduce exploitation success rates. Organizations should also monitor for indicators of compromise related to this vulnerability, including unusual network connections, memory dumps, and unauthorized process execution patterns that may indicate exploitation attempts.
The vulnerability aligns with CWE-125, which describes "Out-of-bounds Read" conditions, and CWE-787, which covers "Out-of-bounds Write" scenarios, both of which are common memory corruption patterns exploited in browser-based attacks. From the MITRE ATT&CK framework perspective, this vulnerability maps to techniques involving exploitation of software vulnerabilities and execution of malicious code through web-based attack vectors. The attack surface extends beyond simple browser exploitation to include potential privilege escalation scenarios where attackers can leverage this memory corruption to gain elevated system privileges. Security teams should also consider implementing endpoint detection and response solutions that can identify anomalous memory access patterns and potential exploitation attempts related to this specific vulnerability class.
Organizations should conduct comprehensive vulnerability assessments to identify all systems running affected Edge versions and prioritize remediation efforts accordingly. The vulnerability's remote execution capability makes it particularly attractive to nation-state actors and organized cybercriminal groups, emphasizing the need for proactive security measures. Regular security awareness training for users about avoiding suspicious websites and email attachments becomes crucial in reducing successful exploitation rates. Additionally, maintaining up-to-date security tooling and monitoring capabilities ensures that organizations can detect and respond to exploitation attempts before they result in significant security incidents or data breaches.