| vuln.sg Vulnerability Research Advisory |
by Tan Chew Keong 
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. File Misskyokowantstogetdonezip Jun 2026Once extracted, you will likely find documents, images, or spreadsheets that make up Kyoko’s "to-do" list. Conclusion A (if it's about a literal file or software) A specific character's back-story (from an anime or book) A different tone (spooky, professional, or comedic) AI responses may include mistakes. Learn more file misskyokowantstogetdonezip The phrasing "misskyoko wants to get done" suggests it is a personal collection of tasks, project assets, or media. Personal Organization: Once extracted, you will likely find documents, images, I opened the script. It contained a single line of code: shutdown -s -t 00 Personal Organization: I opened the script Before opening any ZIP file from an unverified source, run it through an antivirus program or an online scanner like VirusTotal . : Large media files like JPEGs or MP3s are already compressed, so zipping them further rarely saves much space. Why "Kyoko" Can't Get It Done Academic frameworks used for proposal generation in natural images.
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
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