| 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. Brazzers - Lasirena69 - Mask On- Jerk Off -11.0... =link= [FREE]Marcus sat up. “How does it end?” : The current global leader in box office revenue, featuring Illumination DreamWorks Animation Popular Productions Fast & Furious Jurassic World franchise. Sony Pictures Brazzers - LaSirena69 - Mask On- Jerk Off -11.0... : The global leader in subscription-based streaming, producing original content in 50 languages across 190 countries. Marcus sat up For over a century, these five major American film studios have industrialized filmmaking and distribution. Today, they remain the dominant forces in the global theatrical market. Brazzers - LaSirena69 - Mask On- Jerk Off -11.0... : A top player in action and comedy, and the only US major owned by a foreign conglomerate (Sony Group Corp). Popular Productions Spider-Man Ghostbusters Paramount Skydance Studios
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 |