| 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. Super Mario : - How Nintendo Conquered America: The protagonist was renamed "Mario" after the company's real-life landlord, Mario Segale , who had famously confronted the team about overdue rent. 2. Marketing the "Entertainment System" : President Hiroshi Yamauchi tasked a young artist, Shigeru Miyamoto , with creating a new game for the existing hardware. Super Mario : how Nintendo conquered America In the mid-1980s, the North American video game industry was in a state of total collapse following the 1983 market crash , which saw revenues plummet by 97%. Against this backdrop, Nintendo achieved one of the most significant corporate turnarounds in history, primarily through the power of a single character: . 1. From Failure to Foundational Hit : The protagonist was renamed "Mario" after the
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
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