CVE-2014-0270 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," a different vulnerability than CVE-2014-0273, CVE-2014-0274, and CVE-2014-0288.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 01/08/2025
This vulnerability represents a critical memory corruption flaw in Microsoft Internet Explorer versions 9 through 11 that enables remote code execution or denial of service attacks through maliciously crafted web content. The vulnerability stems from improper handling of memory operations within the browser's rendering engine, specifically affecting how Internet Explorer processes certain web elements. Attackers can exploit this weakness by hosting malicious web pages that trigger memory corruption when the browser attempts to render specific content, potentially leading to arbitrary code execution on the target system. The flaw operates at a fundamental level within the browser's memory management system, making it particularly dangerous as it can be leveraged without user interaction once the malicious page is loaded. This vulnerability is classified under CWE-125 as an out-of-bounds read condition, which occurs when the browser attempts to access memory locations beyond the intended boundaries. The attack vector typically involves a web page containing specially crafted JavaScript or HTML elements that, when processed by Internet Explorer's JavaScript engine, cause memory corruption. This vulnerability aligns with ATT&CK technique T1203 by enabling initial access through malicious web content, and T1059 for the execution of malicious code via scripting languages. The impact extends beyond simple exploitation as it can also result in denial of service conditions where the browser crashes or becomes unresponsive, disrupting user productivity and system availability. The vulnerability affects a wide range of Internet Explorer versions, making it particularly concerning for organizations with legacy browser deployments. Microsoft addressed this issue through security updates that corrected the memory handling routines and implemented additional safeguards against malformed memory access patterns. Organizations should prioritize patching affected systems and consider implementing browser security measures such as enhanced sandboxing, restricted browsing environments, and regular security assessments to mitigate exploitation risks.
The technical nature of this vulnerability demonstrates how memory corruption flaws in complex software systems can be exploited for remote code execution. The flaw occurs during the processing of web content where Internet Explorer's memory management fails to properly validate input data before attempting to access memory locations. This type of vulnerability is particularly challenging to detect and prevent because it often manifests as subtle memory access violations that can be difficult to distinguish from normal application behavior. The exploitation process typically involves crafting web content that triggers specific memory access patterns causing the browser to corrupt its own memory space. This corruption can then be leveraged to execute arbitrary code with the privileges of the user running the browser, potentially leading to complete system compromise. The vulnerability's classification as a memory corruption issue places it within the broader category of heap-based buffer overflows and out-of-bounds memory access patterns that have historically been primary attack vectors for sophisticated malware. Security researchers have noted that similar vulnerabilities in browser environments often require specific conditions to be met for successful exploitation, making them less common than other attack vectors but significantly more dangerous when they do occur. The presence of this vulnerability in multiple Internet Explorer versions indicates a systemic issue in the browser's memory management architecture that required comprehensive patching across the affected product line. Organizations that failed to patch this vulnerability were exposed to significant risk, as the attack could be delivered through standard web browsing activities without requiring user interaction or specialized knowledge from the attacker. The remediation process involved not just applying security patches but also implementing additional security controls to prevent similar issues from occurring in the future.
From an operational perspective, this vulnerability demonstrates the critical importance of maintaining up-to-date security patches in enterprise environments. The wide range of affected Internet Explorer versions means that organizations with older systems were particularly vulnerable, as these legacy deployments often lacked the security updates necessary to protect against known exploits. The vulnerability's potential for remote code execution makes it a prime target for advanced persistent threat actors who seek to establish persistent access to target networks. Security teams should implement comprehensive monitoring for exploitation attempts and ensure that all browser installations are kept current with security patches. The vulnerability also highlights the need for browser hardening measures such as disabling unnecessary features, implementing content security policies, and using security software that can detect and block malicious web content. Organizations should consider implementing web application firewalls and network-based intrusion detection systems to identify and prevent exploitation attempts targeting this vulnerability. The attack methodology for this vulnerability typically involves social engineering elements where users are directed to malicious websites through phishing campaigns or other deceptive means. This makes user education and awareness programs critical components of a comprehensive security strategy. The vulnerability's classification as a memory corruption issue places it within the context of advanced exploitation techniques that require understanding of memory layout and browser internals. Security professionals should be aware that similar vulnerabilities may exist in other browser implementations and should conduct regular security assessments to identify potential attack vectors. The remediation of this vulnerability required coordination between multiple security teams and vendors, demonstrating the interconnected nature of modern cybersecurity challenges. Organizations should establish robust incident response procedures that include specific protocols for addressing browser-based vulnerabilities and ensuring rapid deployment of security patches across all affected systems.