by Tan Chew Keong
Release Date: 2008-06-27
[en] [jp]
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.
Tested Versions
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.
POC / Test Code
Please download the POC here and follow the instructions below.
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The Risks of Searching for "Advanced Driver Updater Registration Key UPD" and How to Safely Update Your Drivers
Advanced Driver Updater is typically available in two versions: a free trial and a fully registered version. This distinction is the primary reason for the widespread search for a registration key.
Drivers are essentially the translators between your hardware (like your graphics card, printer, or Wi-Fi adapter) and Windows. When these drivers become outdated, you may experience: advanced driver updater registration key upd
Advanced Driver Updater is available for purchase at the following price points:
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Right-click the button and select Device Manager . When these drivers become outdated, you may experience:
Users may encounter issues during the registration key update process. Some common problems and solutions include:
The only legitimate way to obtain a registration key for Advanced Driver Updater is to purchase it directly from the developer, Systweak, Inc., or an authorized retailer. The process is straightforward:
For occasional use – yes. You can scan and update drivers one by one (manual click per driver). For 20+ outdated drivers, that’s tedious. The Pro version’s “Update All” button is the main selling point.
Patch / Workaround
Avoid downloading files/directories from untrusted FTP servers.
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.