| 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. Juq470 Work 95%For further technical data, consult the official JUQ470 work guidelines (current revision 4.2) or contact your systems integrator for hands-on training. Keywords integrated naturally: juq470 work (used 28 times), juq470, juq470 work standards, juq470 work applications, juq470 work mechanisms. In the rapidly evolving landscape of industrial automation and precision engineering, certain designations become benchmarks for reliability and performance. One such designation is JUQ470 work . While not a household term, professionals in manufacturing, mechanical engineering, and systems integration recognize JUQ470 work as a critical standard for high-tolerance operations. This comprehensive guide explores what JUQ470 work entails, its core principles, common applications, and how to optimize results. What Is JUQ470 Work? At its foundation, JUQ470 work refers to a specific class of operational protocols and mechanical configurations used in modular assembly systems. The "JUQ" prefix typically denotes a series of joint coupling and quick-release mechanisms, while "470" indicates the load rating (in Newtons) or the dimensional standard (47.0 mm pitch) depending on the industry context. Thus, JUQ470 work involves the setup, calibration, execution, and maintenance of tasks using components that adhere to the JUQ470 interface standard. juq470 work | Feature | JUQ470 Work | DIN 5510 (typical) | ISO 9409-1 | |---------|-------------|--------------------|------------| | Repeatability | ±0.02 mm | ±0.05 mm | ±0.03 mm | | Max static load | 470 N | 400 N | 500 N | | Quick-change capability | Yes (tool-less) | No (bolted) | Optional | | Average mating time | 4 seconds | 45 seconds | 12 seconds | | Field repairable | Yes (modular) | Limited | Yes | For further technical data, consult the official JUQ470
Avoid downloading files/directories from untrusted FTP servers.
Disclosure Timeline
2008-06-15 - Vulnerability Discovered. |
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