CVE-2014-6369 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 9 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability."
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/01/2022
Microsoft Internet Explorer versions 9 through 11 contained a critical memory corruption vulnerability that enabled remote attackers to execute arbitrary code or cause denial of service conditions through maliciously crafted web content. This vulnerability stems from improper handling of memory operations during web page rendering, specifically when processing certain objects and data structures within the browser's memory space. The flaw exists in the way Internet Explorer's scripting engine manages memory allocation and deallocation, creating opportunities for attackers to manipulate memory pointers and execute malicious code remotely. The vulnerability is particularly dangerous because it can be triggered through ordinary web browsing activities without any special privileges or user interaction beyond visiting a compromised website.
The technical nature of this memory corruption vulnerability aligns with CWE-125, which describes out-of-bounds read conditions that can lead to memory corruption and arbitrary code execution. Attackers could craft web pages containing malicious javascript or ActiveX controls that exploit the memory handling flaws in Internet Explorer's rendering engine. These malicious pages would trigger buffer overflows or use-after-free conditions when the browser attempts to process the crafted content, leading to unpredictable memory behavior and potential code execution. The vulnerability operates at the kernel level within the browser's memory management system, making it particularly difficult to detect and prevent through traditional security measures.
The operational impact of this vulnerability extends far beyond simple exploitation scenarios, as it represents a critical threat to enterprise security infrastructure. Organizations running affected versions of Internet Explorer faced significant risk of compromise through drive-by downloads, where simply visiting a malicious website could result in full system compromise. The vulnerability's remote execution capability means that attackers could leverage it for persistent access, data exfiltration, and lateral movement within network environments. Security professionals noted that the vulnerability was frequently exploited in the wild, with threat actors incorporating it into automated attack frameworks that scanned for vulnerable systems and deployed malware payloads without user interaction. This made it particularly attractive for nation-state actors and organized cybercriminal groups seeking to establish footholds in target networks.
Mitigation strategies for CVE-2014-6369 required immediate patch deployment through Microsoft's security updates, with organizations needing to prioritize patch management processes to ensure all affected systems received updates promptly. Security teams implemented browser hardening measures including disabling unnecessary ActiveX controls, implementing enhanced sandboxing mechanisms, and deploying application whitelisting policies to prevent exploitation. Network security controls such as web application firewalls and intrusion detection systems were configured to monitor for exploitation attempts and block malicious traffic patterns associated with the vulnerability. The incident highlighted the importance of maintaining current security patches and implementing layered defense strategies, as the vulnerability demonstrated how a single memory corruption flaw could compromise entire enterprise environments. Organizations also began adopting more rigorous security testing procedures for web applications and browser configurations to identify similar vulnerabilities before they could be exploited by malicious actors.