Rob Kraus has discovered a vulnerability in NetDecision TFTP Server, which can be exploited by malicious people to disclose sensitive information or compromise a vulnerable system.
The vulnerability is caused due to an input validation error within the TFTP server. This can be exploited to upload or download files to and from arbitrary locations outside the TFTP root via specially crafted directory traversal sequences.
The vulnerability is confirmed in NetDecision TFTP Server 4.2. Other versions may also be affected.
Solution: Restrict network access to the service.
Provided and/or discovered by: Rob Kraus
Original Advisory: http://www.princeofnigeria.org/blogs/index.php/2009/05/17/netdecision-tftp-server-4-2-tftp-directo?blog=1
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Subject: NetDecision TFTP Server Directory Traversal Vulnerability
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