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.
School Girl 14 Old Www 3gp King Com High Quality ((install))
Wait, "www.king.com" – that's a domain name, but it's part of the query. I should check what King.com is. Oh, right, King.com is a subsidiary of the Danish company Playtech, and they’re known for gaming and entertainment. So, maybe the user is referring to games or content from King.com that's suitable for a 14-year-old school girl.
Also, check if there's any recent data or trends from www.king.com about their engagement with teens. If not, keep it general. Avoid making claims that can't be verified. The tone should be positive and encouraging, promoting www.king.com as a responsible choice for teen entertainment. school girl 14 old www 3gp king com high quality
The user's query is a bit vague. They mention lifestyle and entertainment, so I need to focus on how www.king.com offers high-quality entertainment and lifestyle content for teens. But I have to make sure the content is age-appropriate for a 14-year-old. Wait, "www
Make sure there's no promotion that could be misleading. The blog should be informative, helping a 14-year-old and their parents find quality lifestyle content and entertainment online while staying safe and responsible. So, maybe the user is referring to games
Also, the term "high-quality lifestyle" – perhaps the site offers resources or content that promote healthy lifestyles, productivity, or hobbies. I need to verify if King.com actually has sections on lifestyle. If not, maybe the user is using the term metaphorically, referring to high-quality entertainment that contributes positively to a student's life by providing stress relief through games.
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.