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Directory Traversal in FTP Explorer
From: advisory () htbridge ch
Date: Thu, 5 Aug 2010 15:51:38 +0200 (CEST)

Vulnerability ID: HTB22524
Reference: http://www.htbridge.ch/advisory/directory_traversal_in_ftp_explorer.html
Product: FTP Explorer
Vendor: FTPx Corp ( http://www.ftpx.com/ ) 
Vulnerable Version: 10.5.19.1 for Windows and Probably Prior Versions
Vendor Notification: 22 July 2010 
Vulnerability Type: Directory Traversal Vulnerability
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: High 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
When exploited, this vulnerability allows an anonymous attacker to write files to specified locations on a user's 
system.

The FTP client does not properly sanitise filenames containing directory traversal sequences that are received from an 
FTP server, for example
file named as "..\..\..\..\..\..\..\somefile.exe".

By tricking a user to download a directory from a malicious FTP server that contains files with backslash directory 
traversal sequences in their filenames, 
an attacker can potentially write files into a user's Startup folder to execute malicious code when the user logs on.




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