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A stack-based buffer overflow vulnerability exists in AccessServer32.exe, a component of Ericom AccessNow Server. The vulnerability can be triggered by a remote attacker sending a request for a non-existent file, which leads to a buffer overflow condition. This allows the attacker to overwrite stack memory and potentially execute arbitrary code on the server.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (ericom_access_now_bof.rb) that exploits a stack-based buffer overflow vulnerability (CVE-2014-3913) in Ericom AccessNow Server version 2.4.0.2 running on Windows XP SP3 or Windows 2003 Server SP2. The exploit works by sending a specially crafted HTTP GET request to the target server (default port 8080), triggering the overflow via a malformed URI. The module includes a ROP chain to bypass DEP and allows the attacker to execute arbitrary code with the privileges of the vulnerable service. The payload is customizable and leverages Metasploit's payload framework. The module also includes a check method to verify if the target is running the vulnerable software by inspecting the response from /AccessNow/start.html. The code is written in Ruby and follows standard Metasploit module structure.
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