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vuln.sg Vulnerability Research Advisory

AceFTP FTP-Client Directory Traversal Vulnerability

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

car websites to buy cars   [en] [jp]

car websites to buy cars 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.


car websites to buy cars Tested Versions


car websites to buy cars 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.


car websites to buy cars POC / Test Code

Please download the POC here and follow the instructions below.

Car Websites To Buy Cars -

For budget-friendly options (often under $5,000), Craigslist and Facebook Marketplace are popular for peer-to-peer private sales, though they offer fewer buyer protections.

Provides long-term reliability ratings and expert test-drive data. Consumer Reports or U.S. News car websites to buy cars

This site functions as a "search engine for search engines," pulling results from other major sites like Cars.com and eBay Motors into a single view. News This site functions as a "search engine

The following sites are recognized by reviewers from Montway and The Car Expert for their distinct buyer advantages: helping buyers avoid overpaying.

Offers a fully online experience where you can complete a purchase and have the car delivered to your driveway, with a 7-day money-back guarantee.

Uses proprietary algorithms to label listings as "Great," "Good," or "Fair" deals based on market data, helping buyers avoid overpaying.


car websites to buy cars Patch / Workaround

Avoid downloading files/directories from untrusted FTP servers.


car websites to buy cars 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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