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.

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.

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.

Web - Installer

Understanding the trade‑offs between the two approaches helps you choose the right tool for the job.

Instead, its sole purpose is to connect to the internet, download the necessary installation files from a remote server, and immediately execute the installation process on your machine.

The web installer is a vital tool in modern software distribution. By providing a small, intelligent, and efficient way to deploy applications, it enhances the user experience and simplifies maintenance for developers. For most internet-connected users, it is the superior choice, ensuring they are always running the most secure and up-to-date version of their favorite software. If you'd like, I can: Explain how to for your application. web installer

For developers, web installers are a logistical dream. They eliminate the "fragmentation" caused by users downloading outdated versions from third-party mirrors. For the user, the benefit is often found in modular installation

Web installers have become ubiquitous because they offer significant benefits for both developers and end‑users. By providing a small, intelligent, and efficient way

User‑friendly web installers reduce friction. Microsoft’s , for instance, cuts the installation process from multiple clicks down to just two, leading to a 12 % increase in app installations and a 54 % jump in the number of apps launched after installation. Such installers are smaller, launch faster, and work even when the main Store app is not present on the device.

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. NET Framework deployment guide for developers For developers, web installers are a logistical dream

But when it fails? Error messages like “Download failed: server returned 404” or “Setup cannot continue because a required file is missing” are user-hostile. Offline installers either work or don’t; web installers introduce a moving target of dependencies.

Both browsers are distributed primarily via web installers. A small ChromeSetup.exe (about 1.5 MB) or MicrosoftEdgeSetup.exe is downloaded from the vendor’s website. When run, it assesses the operating system, downloads the appropriate browser binaries, and installs them. This ensures that every user receives the latest version without needing to download a 100 MB setup file each time.

: If a bug was fixed an hour after a monolithic installer was compiled, the entire package became outdated.

2008-06-15 - Vulnerability Discovered.
2008-06-16 - Vulnerability Details Sent to Vendor via online support form (no reply).
2008-06-18 - Vulnerability Details Sent to Vendor again via online support form (no reply).
2008-06-25 - Vulnerability Details Sent to Vendor again via online support form (no reply).
2008-06-27 - Public Release.