| 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. 1 Hot =link= | Czech Garden Party 1 PartForget buns; you need thick slices of sourdough rye bread to soak up the juices. When the Central European sun finally breaks through the winter chill, there is only one thing on every Czech’s mind: the zahradní slavnost . But we aren’t talking about a quiet afternoon tea with finger sandwiches. A true is a high-energy, flavorful, and "hot" social marathon that blends rustic tradition with modern summer vibes. czech garden party 1 part 1 hot This is the secret weapon of a hot Czech BBQ. A wheel of Camembert-style cheese is rubbed with paprika, garlic, and oil, wrapped in foil, and grilled until the center is molten lava. Forget buns; you need thick slices of sourdough
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
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