CVE-2014-4052 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 9 and 10 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."
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Analysis
by VulDB Data Team • 12/17/2024
Microsoft Internet Explorer 9 and 10 contained a critical memory corruption vulnerability that enabled remote code execution through malicious web content. This flaw manifested when the browser processed specially crafted HTML elements or JavaScript code, leading to unpredictable memory behavior that could be exploited by attackers. The vulnerability stemmed from insufficient input validation and memory management within the browser's rendering engine, specifically affecting how Internet Explorer handled certain object references and memory allocations. The issue represented a classic buffer overflow condition where attacker-controlled data could overwrite adjacent memory locations, potentially allowing execution of malicious code with the privileges of the logged-in user.
The technical exploitation of CVE-2014-4052 relied on creating malformed web pages that would trigger memory corruption during normal browsing operations. Attackers could craft web content that would cause Internet Explorer to improperly handle memory pointers, leading to crashes or memory corruption that could be leveraged for code execution. This vulnerability was particularly dangerous because it could be triggered through standard web browsing activities without requiring any special user interaction beyond visiting a malicious website. The flaw existed in the browser's JavaScript engine and HTML parser, making it difficult to detect through conventional security measures and allowing for stealthy exploitation in targeted attacks.
The operational impact of this vulnerability extended beyond simple remote code execution to include potential system compromise and data theft. Successful exploitation could result in full system control, allowing attackers to install malware, steal sensitive information, or establish persistent backdoors. Organizations running affected versions of Internet Explorer faced significant risk, as the vulnerability could be exploited through drive-by downloads or compromised websites. The memory corruption aspect meant that the vulnerability could also cause denial of service conditions, making systems unstable and potentially unusable. Security researchers noted that this flaw was particularly concerning due to its exploitation potential in targeted attacks against enterprise environments where older browser versions might still be in use.
Mitigation strategies for CVE-2014-4052 focused on immediate patching and browser updates, as Microsoft released security updates to address the memory corruption issue. Organizations should have implemented browser hardening measures including disabling unnecessary features, implementing application whitelisting, and using security tools to monitor for exploitation attempts. Network-based protections such as intrusion detection systems and web application firewalls could help detect and block malicious traffic targeting this vulnerability. The remediation process required careful testing to ensure that security updates did not break existing applications or business processes, particularly in enterprise environments where legacy systems might be affected. Security teams also needed to conduct thorough vulnerability assessments to identify all systems running affected Internet Explorer versions and prioritize remediation efforts accordingly.
This vulnerability aligns with CWE-121 Stack-based Buffer Overflow and CWE-122 Heap-based Buffer Overflow categories, representing memory corruption flaws that enable arbitrary code execution. From an ATT&CK framework perspective, the vulnerability maps to techniques such as T1059 Command and Scripting Interpreter and T1070 Indicator Removal on Host, as attackers could leverage the memory corruption for persistent access and system control. The flaw demonstrated the importance of secure coding practices and proper memory management in browser applications, highlighting how seemingly minor implementation issues could result in severe security consequences. Organizations needed to maintain updated security practices and implement comprehensive vulnerability management programs to prevent similar issues from occurring in other software components.