CVE-2013-3149 in Internet Explorer
Summary
by MITRE
Microsoft Internet Explorer 7 and 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."
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Analysis
by VulDB Data Team • 06/25/2025
Microsoft Internet Explorer versions 7 and 8 contained a critical memory corruption vulnerability that enabled remote attackers to execute arbitrary code or cause denial of service conditions through specially crafted web content. This vulnerability stems from improper handling of memory structures during web page rendering processes, creating opportunities for attackers to manipulate memory allocation and execution flows. The flaw manifests when Internet Explorer processes malformed or malicious web content that triggers buffer overflows or use-after-free conditions in the browser's memory management systems.
The technical implementation of this vulnerability involves the exploitation of memory corruption patterns that occur during the parsing and rendering of web elements within Internet Explorer's engine. Attackers can craft web pages containing malicious JavaScript or HTML elements that, when rendered by the vulnerable browser, cause memory corruption through improper memory deallocation or buffer overflow conditions. These conditions typically arise from insufficient input validation and memory boundary checks within the browser's rendering pipeline. The vulnerability aligns with CWE-125, which describes out-of-bounds read conditions, and CWE-787, which covers out-of-bounds write operations, both of which are common precursors to memory corruption exploits. The attack vectors leverage the browser's handling of complex web page structures, including dynamic content generation, object manipulation, and memory allocation patterns that can be manipulated through crafted input.
The operational impact of CVE-2013-3149 represents a significant security risk for organizations relying on Internet Explorer 7 and 8, as successful exploitation can lead to complete system compromise through arbitrary code execution. Attackers can leverage this vulnerability to install malware, establish persistent backdoors, or escalate privileges within the victim's system. The memory corruption nature of the vulnerability also enables denial of service attacks that can crash the browser application or cause system instability. From an adversarial perspective, this vulnerability aligns with ATT&CK technique T1203, which covers exploitation for execution, and T1499, covering network denial of service attacks. The vulnerability's exploitation requires minimal user interaction, often through drive-by downloads or phishing campaigns where users simply visiting malicious websites can trigger the exploit without requiring additional user actions.
Mitigation strategies for this vulnerability encompass both immediate remediation and long-term security hardening approaches. Organizations should prioritize immediate patching through Microsoft's security updates, as the vendor released patches specifically addressing this memory corruption vulnerability in subsequent security releases. Browser isolation techniques and sandboxing mechanisms can provide additional protection layers, though these are less effective against memory corruption exploits that target the browser's core rendering engine. Network-level protections such as web application firewalls and content filtering systems can help detect and block malicious web content before it reaches vulnerable systems. Security awareness training for end users remains crucial to prevent accidental exposure through phishing campaigns or malicious website visits. System administrators should implement proper patch management processes to ensure timely deployment of security updates and consider migrating from unsupported Internet Explorer versions to modern browser alternatives that receive regular security updates. The vulnerability also underscores the importance of maintaining up-to-date security monitoring systems that can detect anomalous memory access patterns or exploitation attempts in network traffic.