CVE-2018-8316 in Internet Explorer
Summary
by MITRE
A remote code execution vulnerability exists when Internet Explorer improperly validates hyperlinks before loading executable libraries, aka "Internet Explorer Remote Code Execution Vulnerability." This affects Internet Explorer 11, Internet Explorer 10.
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Analysis
by VulDB Data Team • 05/01/2023
The vulnerability identified as CVE-2018-8316 represents a critical remote code execution flaw within Microsoft Internet Explorer browsers, specifically affecting versions 11 and 10. This vulnerability stems from improper validation of hyperlinks that leads to the loading of executable libraries in an unsafe manner, creating a pathway for malicious actors to execute arbitrary code on affected systems. The flaw exists within the browser's handling of web content and specifically targets the way Internet Explorer processes hyperlinks that reference external executable components.
The technical nature of this vulnerability aligns with CWE-170, which addresses improper handling of input that can lead to unexpected behavior in software systems. The vulnerability occurs when Internet Explorer fails to properly validate hyperlink references before attempting to load and execute associated libraries, creating a condition where maliciously crafted web content can trigger unauthorized code execution. This improper validation allows attackers to construct web pages that, when visited, automatically download and execute malicious payloads without user intervention. The flaw specifically affects the browser's security model and trust mechanisms, particularly in how it handles external resource loading and execution contexts.
From an operational impact perspective, this vulnerability presents a severe risk to organizations relying on Internet Explorer for business operations, as it enables attackers to gain complete control over affected systems without requiring any user interaction beyond visiting a malicious website. The remote code execution capability means that adversaries can deploy malware, establish backdoors, steal sensitive data, or use compromised systems as launch points for further attacks within network environments. This vulnerability directly maps to ATT&CK technique T1203, which covers exploitation for execution through web-based attacks that leverage browser vulnerabilities to gain system access.
The attack surface for this vulnerability is particularly concerning as it affects legacy Internet Explorer versions that many organizations continue to use for compatibility reasons, especially in enterprise environments where modern browser migration has not been completed. Security professionals should note that this vulnerability can be exploited through various attack vectors including phishing emails, malicious websites, or compromised legitimate web resources that contain crafted hyperlinks designed to trigger the vulnerable code path. Organizations utilizing Internet Explorer 10 and 11 should prioritize immediate mitigation through security updates, browser hardening measures, and network-level protections to prevent exploitation attempts that could result in full system compromise and potential lateral movement within affected networks.