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A stack consumption vulnerability exists in the FTP Service of Microsoft Internet Information Services (IIS) versions 5.0 through 7.0. The vulnerability is triggered when a remote authenticated user issues a 'ls -R' command with a wildcard referencing a subdirectory, followed by a '..' (dot dot), causing the service to recurse indefinitely and consume stack space, ultimately leading to a daemon crash.
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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 auxiliary module targeting a Denial of Service (DoS) vulnerability in Microsoft IIS FTP Server versions 5.0 through 7.0 (CVE-2009-2521). The exploit works by sending a recursive 'LIST -R */../' command via FTP, which can exhaust the stack and crash the FTP service. The module requires valid FTP credentials and certain server configurations (FTP Publishing in manual mode, at least one directory under the FTP root, or write-access to create one). The code is written in Ruby and leverages Metasploit's FTP and DoS auxiliary libraries. The main attack vector is network-based, targeting the FTP service (typically on TCP port 21). The module is a proof-of-concept for causing a service crash and does not provide post-exploitation capabilities.
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