| vuln.sg Vulnerability Research Advisory |
by Tan Chew Keong 
Summary
A vulnerability has been found within the FTP client in AceFTP. When exploited, this vulnerability allows an anonymous attacker to write files to arbitrary locations on a Windows user's system.
Tested Versions
Details
This advisory discloses a vulnerability within the FTP client in AceFTP. When exploited, this vulnerability allows an anonymous attacker to write files to arbitrary locations on a Windows user's system. The FTP client does not properly sanitise filenames containing directory traversal sequences (forward-slash) that are received from an FTP server in response to the LIST command. An example of such a response from a malicious FTP server is shown below. Response to LIST (forward-slash): -rw-r--r-- 1 ftp ftp 20 Mar 01 05:37 /../../../../../../../../../testfile.txt\r\n By tricking a user to download a directory from a malicious FTP server that contains files with fowward-slash directory traversal sequences in their filenames, it is possible for the attacker to write files to arbitrary locations on a user's system with privileges of that user. An attacker can potentially leverage this issue to write files into a user's Windows Startup folder and execute arbitrary code when the user logs on.
POC / Test Code
Please download the POC here and follow the instructions below. Hex Workshop Hex Editor V680 License Key Upd [hot] Jun 2026What specific are you trying to accomplish? Which operating system do you need the software to run on? Share public link +-------------------+-------------------------+-------------------------------------+ | Tool Name | License Type | Key Features | +-------------------+-------------------------+-------------------------------------+ | ImHex | Open Source (GPLv3) | Custom pattern language, node editor| | x64dbg (Hex View) | Open Source (GPLv3) | Debugger integration, fast analysis | | HxD | Freeware | Handles huge files, RAM editing | | Hiew | Commercial / Demo | Great for x86/x64 assembly editing | +-------------------+-------------------------+-------------------------------------+ hex workshop hex editor v680 license key upd Maps internal application structures (like ZIP headers or executable layouts) directly over the hex data using a C-style structure definition language. What specific are you trying to accomplish 4.5/5 A modern hex editor designed specifically for reverse engineers, programmers, and individuals who value their retinas. It features a custom pattern language for parsing file structures, a built-in evaluator, data graphing, and an extensive plugin system. It is fully open-source and cross-platform. As a developer, programmer, or IT professional, you've As a developer, programmer, or IT professional, you've likely encountered situations where you need to edit or analyze binary data, such as executable files, images, or system files. This is where a hex editor comes into play. One of the most popular and powerful hex editors on the market is Hex Workshop Hex Editor. In this article, we'll explore the features and benefits of Hex Workshop Hex Editor v6.8.0 and provide a step-by-step guide on how to obtain a license key and update to the latest version. What is your ? (File carving, game modding, malware analysis?) Do you prefer open-source or commercial software ?
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
| Contact |
| For further enquries, comments, suggestions or bug reports, simply email them to |