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A use-after-free vulnerability exists in Microsoft Internet Explorer versions 6, 7, and 8, specifically in the handling of Option elements within Select HTML elements. The browser's Option cache can become inconsistent, allowing JavaScript to access and manipulate deleted Option objects. This flaw enables remote attackers to execute arbitrary code if a user visits a malicious web page, leveraging the browser's default enabled JavaScript setting. The vulnerability is tracked as CVE-2011-1996 and was addressed by Microsoft in October 2011.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (ms11_081_option.rb) that exploits a use-after-free vulnerability (CVE-2011-1996) in Microsoft Internet Explorer 8 on Windows XP SP3, Vista, and 7. The exploit is delivered via a malicious HTTP server that serves specially crafted HTML and JavaScript to the victim. The JavaScript performs a heap spray and triggers the vulnerability, allowing arbitrary code execution via a ROP chain and shellcode. The module supports payload customization through Metasploit, making it weaponized and suitable for real-world exploitation. The main entry point is the on_request_uri method, which handles incoming HTTP requests and serves the exploit to compatible browsers. No hardcoded external endpoints or IPs are present; the exploit is served directly to connecting clients.
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