CVE-2014-4094 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 6 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," a different vulnerability than CVE-2014-2799, CVE-2014-4059, CVE-2014-4065, CVE-2014-4079, CVE-2014-4081, CVE-2014-4083, CVE-2014-4085, CVE-2014-4088, CVE-2014-4090, CVE-2014-4097, CVE-2014-4100, CVE-2014-4103, CVE-2014-4104, CVE-2014-4105, CVE-2014-4106, CVE-2014-4107, CVE-2014-4108, CVE-2014-4109, CVE-2014-4110, and CVE-2014-4111.
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Analysis
by VulDB Data Team • 12/22/2024
The vulnerability identified as CVE-2014-4094 represents a critical memory corruption flaw in Microsoft Internet Explorer versions 6 through 11, specifically targeting the browser's handling of memory management during web page rendering processes. This vulnerability falls under the category of remote code execution flaws, where attackers can craft malicious web content that, when visited by a victim, triggers unpredictable memory behavior leading to arbitrary code execution or system crashes. The flaw is particularly concerning because it affects multiple versions of Internet Explorer spanning over a decade of releases, making it a widespread concern for organizations maintaining legacy browser environments. The vulnerability operates at the core level of Internet Explorer's JavaScript engine and rendering components, specifically when processing certain web elements that cause memory allocation or deallocation errors. Attackers exploit this by creating specially crafted web pages containing malformed data structures or improper memory references that, when rendered by the vulnerable browser, cause memory corruption. This corruption can manifest as buffer overflows, heap corruption, or use-after-free conditions that allow attackers to manipulate program execution flow and ultimately execute malicious code with the privileges of the targeted user.
The technical exploitation of CVE-2014-4094 aligns with common attack patterns documented in the attack framework, particularly those involving memory corruption vulnerabilities that enable privilege escalation and remote code execution. This vulnerability maps to CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds writes. The flaw demonstrates characteristics of the exploit development methodology where attackers identify memory management weaknesses in complex software applications and craft payloads that manipulate memory addresses to redirect program execution. The impact extends beyond simple code execution to include potential denial of service scenarios where system stability is compromised through memory corruption that causes browser crashes or system hangs. The vulnerability's persistence across multiple Internet Explorer versions indicates a fundamental flaw in the browser's memory handling mechanisms rather than a one-time implementation error, making it particularly dangerous for organizations that have not fully migrated away from older browser versions. The attack surface is broad as any web page, including those accessed through email links, social media, or compromised websites, can serve as an attack vector for this vulnerability.
Organizations affected by CVE-2014-4094 face significant operational risks that extend beyond immediate security concerns to include potential data breaches, system compromise, and business disruption. The vulnerability's ability to execute arbitrary code means that attackers can install malware, steal sensitive information, or establish persistent backdoors on compromised systems. The memory corruption aspect creates an unpredictable threat landscape where the same exploit might behave differently on various system configurations, complicating both detection and remediation efforts. The vulnerability's relationship to other related CVEs such as CVE-2014-2799, CVE-2014-4059, and others indicates a pattern of memory-related flaws in Internet Explorer's architecture that suggests a systemic issue requiring comprehensive remediation. From an operational standpoint, the vulnerability affects organizations that maintain legacy systems or have slow patch deployment cycles, as these environments are most susceptible to exploitation. The impact on user productivity and system integrity can be severe, particularly in enterprise environments where Internet Explorer remains the primary browser for critical business applications and legacy systems integration.
Mitigation strategies for CVE-2014-4094 should encompass both immediate defensive measures and long-term architectural improvements to reduce system exposure. Organizations should prioritize immediate patch deployment through Microsoft's security updates, as the vulnerability has been addressed through official security patches that correct the underlying memory management flaws. Browser isolation techniques and sandboxing mechanisms can provide additional protection layers, though these may not fully prevent exploitation given the nature of memory corruption vulnerabilities. Network-level defenses such as web application firewalls and content filtering solutions can help detect and block known malicious payloads, while endpoint protection solutions should be configured to monitor for suspicious memory access patterns. Security awareness training for users becomes critical as social engineering attacks often leverage this vulnerability through phishing campaigns that deliver malicious web content. For organizations unable to immediately patch all systems, implementing browser restrictions and disabling unnecessary browser features can reduce the attack surface, though these measures should be considered temporary solutions. The vulnerability underscores the importance of maintaining up-to-date security practices and demonstrates how legacy software vulnerabilities can persist across multiple versions, emphasizing the need for comprehensive vulnerability management programs that address both current and historical security issues. Regular security assessments and penetration testing should include evaluation of browser-based attack vectors to ensure that mitigation strategies remain effective against evolving exploitation techniques.