CVE-2014-0278 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 8 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-2014-0277 and CVE-2014-0279.
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Analysis
by VulDB Data Team • 01/08/2025
Microsoft Internet Explorer 8 contains a critical memory corruption vulnerability that enables remote code execution when users visit malicious websites. This vulnerability arises from improper handling of memory structures during web page rendering processes, specifically affecting how the browser manages object references and memory allocation. The flaw allows attackers to craft specially designed web pages that trigger memory corruption conditions when processed by the vulnerable browser version. This vulnerability operates under the CWE-125 weakness category, which represents out-of-bounds read conditions that can lead to memory corruption and arbitrary code execution. The attack vector requires no user interaction beyond visiting a malicious website, making it particularly dangerous for widespread exploitation.
The technical implementation of this vulnerability involves the manipulation of memory pointers and object references within Internet Explorer's rendering engine. When the browser processes crafted web content, it fails to properly validate memory boundaries during object manipulation, leading to memory corruption that can be leveraged for code execution. Attackers can exploit this by creating malicious web pages that force the browser to write data beyond allocated memory regions, potentially overwriting critical program structures or executing malicious code in the context of the user's session. This vulnerability demonstrates the classic characteristics of heap-based memory corruption issues that are commonly exploited in browser-based attacks.
The operational impact of this vulnerability extends beyond simple remote code execution to include potential system compromise and denial of service conditions. Successful exploitation can result in complete system takeover, allowing attackers to install malware, steal sensitive data, or maintain persistent access to affected systems. Organizations running Internet Explorer 8 are particularly vulnerable since this version lacks modern security mitigations such as address space layout randomization and data execution prevention. The vulnerability's similarity to other memory corruption issues in the same year demonstrates the prevalence of such flaws in legacy browser implementations and highlights the importance of timely patch management.
Mitigation strategies for this vulnerability primarily focus on immediate patch deployment and browser security hardening. Microsoft released security updates that address the memory corruption issue through improved memory validation and boundary checking mechanisms. Organizations should prioritize immediate patching of all Internet Explorer 8 installations, as this vulnerability was actively exploited in the wild. Additional mitigations include implementing browser security features such as enhanced protection modes, disabling unnecessary browser components, and deploying web application firewalls to filter malicious content. The vulnerability aligns with ATT&CK technique T1203 which involves exploitation of known vulnerabilities for privilege escalation and system compromise. Security teams should also consider implementing network segmentation and user access controls to limit potential damage from successful exploitation attempts.