Vulnerability ID: HTB22626 Reference: http://www.htbridge.ch/advisory/directory_traversal_vulnerability_in_fil terftp.html Product: FilterFTP Vendor: IN MEDIA KG ( http://www.in-mediakg.com/software/filterftp/filterftp.shtml ) Vulnerable Version: 2.0.3 and Probably Prior Versions Vendor Notification: 22 September 2010 Vulnerability Type: Directory Traversal Vulnerability Status: Fixed by Vendor 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. Solution: Upgrade to the most recent version