| 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. Just Cause 4 Reloaded Free Download -: The game was added to the PlayStation Plus catalog in December 2025. If you have an active subscription at the Extra or Premium tier, you can download and play it without an additional purchase. : A high-tech aircraft for stealthy travel. Just Cause 4 Reloaded Free Download The edition is an updated version of the base game that includes several premium items out of the box: : The game was added to the PlayStation : Available for purchase, often bundled with various DLC packs. What is Included in "Reloaded"? The edition is an updated version of the : The Complete Edition is currently discounted to $17.49 (originally $69.99 ) until May 6, 2026. Just Cause 4 Reloaded is not currently available as a permanent free download . While the game was famously offered for free on the Epic Games Store in April 2020, that promotion has ended, and the title has since reverted to a paid product.
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
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