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A stack-based buffer overflow vulnerability exists in SecurityGateway.dll in Alt-N Technologies SecurityGateway version 1.0.1. The vulnerability is triggered when a remote attacker sends an overly long username parameter, causing a buffer overflow on the stack. This can allow the attacker to overwrite critical stack data, including the return address, leading to arbitrary code execution.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository contains a single Metasploit module targeting a buffer overflow vulnerability in Alt-N SecurityGateway (CVE-2008-4193). The exploit abuses insufficient bounds checking on the 'username' parameter of the /SecurityGateway.dll HTTP endpoint, accessible by default on TCP port 4000. The module allows for remote code execution with SYSTEM privileges by sending a specially crafted POST request containing a Metasploit payload. The exploit supports automatic target detection based on the service's version string and is specifically tailored for version 1.0.1. The code is written in Ruby and leverages Metasploit's HttpClient and SEH exploitation mixins. The payload is customizable, with a maximum size of 476 bytes, and is encoded to avoid problematic characters. The repository is operational and ready for use within the Metasploit framework.
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