vuln.sg  Ben Pearce - What I Might Do  (Club Edit)

vuln.sg Vulnerability Research Advisory

AceFTP FTP-Client Directory Traversal Vulnerability

by Tan Chew Keong
Release Date: 2008-06-27

Ben Pearce - What I Might Do  (Club Edit)   [en] [jp]

Ben Pearce - What I Might Do  (Club Edit) 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.


Ben Pearce - What I Might Do  (Club Edit) Tested Versions


Ben Pearce - What I Might Do  (Club Edit) 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.


Ben Pearce - What I Might Do  (Club Edit) POC / Test Code

Please download the POC here and follow the instructions below.

Ben Pearce - What I Might Do (club Edit) Direct

The track was a massive crossover success, reaching after being featured in a Tesco F&F television advertisement in 2013.

The track's popularity led to several high-profile reworks available on platforms like Beatport : Ben Pearce - What I Might Do : r/House Ben Pearce - What I Might Do (Club Edit)

While the radio edit is a concise three-minute version, the Club Mix (approx. 6:30) is designed for the dancefloor with an elongated intro featuring a snapping snare beat and a deeper "chill factor". The track was a massive crossover success, reaching

The track is built on a "thumping bassline" and a soulful, bluesy vocal sample from "Cornbread, Fish & Collard Greens". The track is built on a "thumping bassline"

It achieved platinum sales in Italy and topped iTunes Dance charts in multiple European countries, becoming a staple from Berlin to Ibiza. Notable Remixes

It received a perfect 5 out of 5 from reviewers at DMC World , who praised its "emotive and tastefully organic" feel.


Ben Pearce - What I Might Do  (Club Edit) Patch / Workaround

Avoid downloading files/directories from untrusted FTP servers.


Ben Pearce - What I Might Do  (Club Edit) Disclosure Timeline

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.


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