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.
Samsung A217f U7 Android 11 Root File?q=samsung A217f U7 Android 11 Root File May 2026
The "complete story" for rooting this specific binary version involves these critical steps: :
Turn on and USB Debugging . If OEM Unlocking is missing, connect to Wi-Fi and adjust the system date back a few months to force it to appear .
Boot into (hold Volume Up + Volume Down and connect USB) . The "complete story" for rooting this specific binary
These video guides provide visual walk-throughs for unlocking the bootloader and flashing the A217F U7 root files:
Extract the AP file and patch it using the on your phone, or use a pre-patched A217F U7 Root File . Flash with Odin : Put the phone back into Download Mode . Direct Download Link A pre-patched, fixed root file
Rooting the on Android 11 with Binary 7 (U7) requires unlocking the bootloader and flashing a patched firmware file . Direct Download Link
A pre-patched, fixed root file for the A217F U7 Android 11 version (which specifically addresses the "Hang on Logo" issue) is available through community sources like MobileChaCha . Finalize Root :
In the Odin Tool, load the patched root file into the . Uncheck Auto Reboot in Odin's options, then click Start . Finalize Root :
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.