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A stack-based buffer overflow exists in the TEA decoding algorithm implementation in RhinoSoft Serv-U FTP server versions 7.0.0.1, 9.0.0.5, and other versions prior to 9.1.0.0. The vulnerability is triggered when the server processes a long hexadecimal string, leading to a buffer overflow condition that can be exploited by remote attackers to execute arbitrary code.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (modules/exploits/windows/http/servu_session_cookie.rb) that exploits a buffer overflow vulnerability in Rhinosoft Serv-U 9.0.0.5's HTTP service (CVE-2009-4006). The exploit works by sending a specially crafted HTTP POST request with an overly long session cookie, triggering a stack-based buffer overflow and allowing arbitrary code execution. The module supports exploitation on Windows 2003 SP2 (with NX) and Windows 2000 SP4/XP SP3 (SEH) targets, using ROP chains and SEH overwrites as appropriate. The payload is user-selectable via Metasploit and is injected into the overflowed buffer. The exploit targets TCP port 80 and leverages specific DLLs (libeay32.dll, mfc90u.dll, ntdll.dll) for ROP gadgets. The module includes a check method to verify if the target is running the vulnerable Serv-U version. Overall, this is a weaponized, operational exploit module for Metasploit, providing remote code execution against vulnerable Serv-U installations.
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