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CVE-2011-3659 is a critical use-after-free vulnerability in Mozilla Firefox (before 3.6.26 and 4.x through 9.0), Thunderbird (before 3.1.18 and 5.0 through 9.0), and SeaMonkey (before 2.7). The flaw resides in the handling of DOM attribute nodes, specifically in the nsDOMAttribute::doRemoveChild function. The vulnerability is triggered by incorrect AttributeChildRemoved notifications, which occur before the child node is properly unlinked and its memory released. This allows mutation observers to access freed memory, leading to a use-after-free condition. Exploitation can result in remote code execution via crafted web content.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit exploit module targeting a use-after-free vulnerability (CVE-2011-3659) in Mozilla Firefox versions 8, 8.0.1, 9, and 9.0.1 on Windows XP. The exploit leverages the AttributeChildRemoved() flaw in Firefox's DOM implementation, allowing an attacker to execute arbitrary code when a victim visits a malicious web page. The module sets up an HTTP server that serves a specially crafted HTML page with embedded JavaScript, which performs a heap spray and triggers the vulnerability via DOM manipulation. The exploit supports multiple Firefox versions and uses ROP chains tailored for each. The payload is customizable and can be any Metasploit-supported Windows payload, such as a reverse shell or meterpreter session. The structure is typical for a Metasploit browser exploit: the Ruby file defines the exploit logic, HTTP server, and payload delivery mechanism. No hardcoded external IPs or domains are present; the main fingerprintable endpoint is the HTTP server path provided by the module.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.