A buffer overflow vulnerability exists in the chat.ghp component of Easy Chat Server versions 1.2 and 2.2. The vulnerability is triggered when a remote attacker supplies an excessively long username parameter, causing the server to crash. This is likely due to improper bounds checking on user-supplied input, resulting in a buffer overflow condition.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (3 hidden).
This repository contains a single Metasploit module (efs_easychatserver_username.rb) that exploits a stack buffer overflow vulnerability (CVE-2004-2466) in EFS Software Easy Chat Server versions 2.0 through 3.1. The exploit works by sending an overly long 'username' parameter in an HTTP GET request to the /chat.ghp endpoint, causing a SEH overwrite and allowing arbitrary code execution. The module includes logic to fingerprint the target version via /whatsnew.txt and to discover the installation path via /unins000.dat. The payload is customizable using Metasploit's payload system, allowing for various post-exploitation actions. The exploit targets Windows platforms and has been tested on multiple Windows versions. The code is operational and ready for use within the Metasploit framework.
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