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vuln.sg Vulnerability Research Advisory

AceFTP FTP-Client Directory Traversal Vulnerability

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

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Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams 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.


Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams Tested Versions


Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams 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.


Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams POC / Test Code

Please download the POC here and follow the instructions below.

Tampa Bay Buccaneers V. Baltimore Ravens - Stream 2 Live Stream Online | Buffstreams Access

In their most recent matchup on October 21, 2024, the during a high-powered Monday Night Football clash. Despite an early 10-point lead by the Buccaneers in the first quarter, the Ravens responded with 34 unanswered points to secure their fifth consecutive victory. Key Game Highlights

Baker Mayfield led a potent Tampa Bay offense that initially fired on all cylinders, but the defense struggled to contain Baltimore's momentum in the middle quarters. In their most recent matchup on October 21,

You can use NFL+ for mobile streaming of local and primetime games, or Paramount+ for games broadcast on CBS. You can use NFL+ for mobile streaming of

Both the Baltimore Ravens Official Site and the Tampa Bay Buccaneers Official Site offer live radio broadcasts and detailed "Ways to Watch" guides for every matchup. In their most recent matchup on October 21,

Games are often available on ESPN for Monday Night Football or Amazon Prime Video for Thursday night games.


Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams Patch / Workaround

Avoid downloading files/directories from untrusted FTP servers.


Tampa Bay Buccaneers v. Baltimore Ravens - Stream 2 Live Stream Online | BuffStreams 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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